Social Vulnerability Assessments & Mapping
Strengthening hazard and climate resilience by identifying your community’s most vulnerable members
Social Vulnerability Assessments & Mapping
Anyone who works in disaster risk reduction will know that the physical damage and social consequences of disasters are not distributed evenly across our communities. Often, the groups with the least are the ones that experience the greatest impacts and the slowest post-disaster recoveries.
Understanding which groups within society are most vulnerable, where they are located, and which factors most strongly influence vulnerability in a given neighbourhood is critical to addressing the underlying drivers of vulnerability and developing pathways towards resilience.
The following sections will walk you through how social vulnerability assessments and mapping work, how an assessment could benefit your community, and what is required to complete such an assessment. At the end, we’ll also explore how to take your assessment to the next level.
Introduction to Social Vulnerability Assessments
A social vulnerability assessment identifies which populations within your community face the greatest challenges in preparing for, responding to, and recovering from natural hazards and climate-related events. Unlike traditional hazard mapping that focuses on physical exposure, social vulnerability assessments reveal how demographic, socio-economic, health, and environmental factors affect a community’s resilience.
When a flood, wildfire, extreme heat event, or other hazard occurs, impacts are rarely distributed equally. Socially vulnerable groups experience the effects of hazard events much more profoundly than their neighbours, even if they encounter the same physical impacts. Social vulnerability assessments help municipalities, regional governments, and provinces to understand who in their community is most at risk and why, enabling targeted, equitable emergency planning and resource allocation.
What Does this Work Focus On?
Social vulnerability assessments example multiple dimensions of community vulnerability and resilience, including:
Demographic factors:
Age distributions, household composition, linguistic diversity, and newcomer populationsSocio-economic conditions:
Income levels, employment status, educational attainment, housing tenure, and access to transportationBuilt environment factors:
Housing suitability, density, construction period, and dwelling typesHousehold characteristics:
Adults living alone, single-parent households, large families, and multigenerational families
We integrate more than 50 socio-economic factors based on the specific hazard exposures—flooding, wildfire, extreme heat, or coastal risks— faced by your community to create comprehensive neighbourhood-scale vulnerability profiles that identify your most vulnerable populations and neighbourhoods. Each of these statistics is called a vulnerability “indicator,” which, when combined, form vulnerability “themes” that highlight a specific dimension of socio-economic vulnerability.
We will work collaboratively with your team to establish which indicators are best for your community based on data availability and relevance in the local context.
Where Does the Data Come From?
Resilience Mapping’s social vulnerability assessments primarily draw on the 2021 Census of the Population, conducted every five years in Canada by Statistics Canada. Census data is the most complete and reliable source we have for this type of assessment.
Depending on which hazards are most relevant in your community, we will supplement our census indicators using proximity analysis to measure average distances to water, parks and open spaces, and cooling facilities, incorporate locally available health and social services data, and work with your GIS and policy staff to incorporate relevant local data, if it is available at the correct geographic scale.
Requirements for a Vulnerability Assessment
Our team has already compiled census-based vulnerability indicator data necessary to conduct a baseline social vulnerability assessment for most communities across Canada. However, additional data is required to complete the relevant mapping products and to enhance our assessment using local data and knowledge. To complete a thorough social vulnerability assessment, we work collaboratively with your municipality to identify the questions you need the assessment to address and provide help gathering:
Hazard mapping data:
Existing floodplain maps, wildfire interface zones, landslide susceptibility areas, extreme heat mapping, and any other relevant hazard data—the more detailed, the better—help us position social vulnerability within the context of hazard exposureCommunity boundaries:
Official community boundaries, ward or neighbourhood delineations, service area boundaries, and any other community planning designations are required to help communicate our results through mapsLocal knowledge:
Input from emergency management staff, social services, public health, and community organizations about known vulnerable populations, especially those that don’t appear in census data, can provide additional context not available from census data aloneSupplementary data (optional):
Local datasets on critical facilities, evacuation routes, shelter locations, or community services that complement our demographic analysis or are critical to specific hazards, like cooling centres, provide additional context and help guide discussions during community engagement
Most demographic and socio-economic data is sourced from Statistics Canada Census and other national datasets, minimizing the data burden on your staff. The data collection and pre-processing phase typically requires 2–6 weeks, depending on data-sharing agreements, the availability of data in the required format, the amount of pre-processing required, and coordination with any third-party providers. We will work with your designated point of contact to acquire the necessary data and feed it into our processing pipeline.
Conducting the Vulnerability Assessment
RMC uses a multi-stage process to integrate your community’s specific hazard profile with detailed demographic, socio-economic, and other related data to create neighbourhood-level vulnerability maps and population-specific risk data:
Collaborative planning:
We meet with your emergency management, social services, and planning staff to understand your community’s hazards, concerns, and existing knowledge about vulnerable populations to identify data requirements, key questions to answer, and establish the project work planData acquisition and integration:
We bring together all your available hazards, assets, and any custom neighbourhood-scale datasets with comprehensive demographic and socio-economic data from public census profiles into a single GIS project and work collaboratively with your team to identify which aspects of hazard exposure and vulnerability to include in our analysisMap templating:
We will work with your team to establish a shared set of map templates that will be used for final map production, customized to include the language and components most critical for your needsAnalysis and validation:
In parallel, we will use our assessment methodology to establish which vulnerability indicators are most relevant in the context of your community, how these factors contribute to vulnerability at the neighbourhood scale and validate our initial findings with local staff who know your community’s unique characteristics and challengesReview and revisions:
Once a final plan is established, we will update our analysis and work with your team to refine the language used for maps, indicator descriptions, and in describing vulnerability themes for your communityDelivery of final products:
We deliver to your GIS team a geospatial package containing all of the relevant data layers and tables, a ‘Map Atlas’ including all of the maps produced for the project—identifying vulnerability hotspots, detailed neighbourhood profile information, shared vulnerability themes, and overall neighbourhood vulnerability scores—and a report summarizing the work and our findings
What You Will Receive
Typically, our social vulnerability assessment approach results in the following key deliverables:
A Geospatial Package
A GeoPackage containing the project’s spatial layers and associated data tables, usually clipped to the community’s boundaries to reduce file size.A Map Atlas:
A collection of all maps generated for the assessment in a format suitable for high-quality printing and public distribution.A Map Collection:
A compressed folder containing individual versions of the maps produced for the project in print-quality PDF and web-friendly PNG formats.A Summary Report:
A short summary report describing the work that was completed, the underlying methodology, and key findings from the results.
Types of Vulnerability Maps
We generally produce four types of maps as part of our social vulnerability assessment process:
An Overall Neighbourhood Vulnerability Map (1):
A map highlighting those areas of the community where neighbourhood vulnerability factors most strongly overlap. This map typically includes a text description of the source data, instructions for interpreting the map, and descriptions of areas of elevated vulnerability.Neighbourhood Vulnerability Theme Maps (3~5):
A map for each vulnerability theme identified by the assessment, highlighting where different drivers of vulnerability are most concentrated within the community. These maps typically include a text description of the source data, instructions for interpreting the map, and descriptions of areas of elevated vulnerability for the given theme.Neighbourhood Vulnerability Indicator Maps (15~25):
A map for each vulnerability/resilience indicator identified as statistically significant in the local context (usually around 20), showing the detailed spatial distribution of that indicator. This is typically accompanied by a short text description of what the indicator measures and a statistical distribution graph.Combined Vulnerability Theme and Indicators Maps (3~5):
A map for each vulnerability theme that includes a large version of the theme map in the top left corner, with maps for each of the significant contributing indicators in smaller maps along the right and bottom sides, showing how each indicator contributes to the identified theme. If room permits, additional context is provided through a short text description.
The total number of social vulnerability maps produced will vary depending on the number of themes and indicators found to be statistically significant in your community, typically ranging from 25 to 35.
Other Common Maps Types
Based on the needs of the project, other map types may also be produced, including:
Hazard exposure maps:
Maps showing the total extents or categorized threat information for hazards such as extreme heat or flooding.Bi-variate maps:
Maps that combine hazard exposure and social vulnerability to help identify areas of the community with higher exposure and vulnerability.Service point overlays:
Maps that combine either hazard exposure or social vulnerability with related community service points, such as extreme heat exposure, overlayed with the locations of official cooling centres.
Expected Benefits
Completing a social vulnerability assessment, as part of a broader disaster risk reduction approach, can provide your community with:
Enhanced emergency planning:
Identify specific neighbourhoods and populations requiring targeted outreach, additional educational programs, specialized evacuation support, or priority services during emergenciesTargeted resource allocation:
Direct limited resources—from cooling centres to evacuation assistance—to communities with the greatest need, ensuring no residents are left behindClimate adaptation priorities:
Understand which populations face compounded risks from climate change, informing long-term adaptation investments and community resilience strategiesGrant funding readiness:
Meet growing requirements from provincial and federal support programs that prioritize equity and social vulnerability considerationsInterdepartmental collaboration:
Bridge emergency management, social services, public health, and planning departments with a shared understanding of community riskPublic trust and transparency:
Demonstrate commitment to protecting all residents, particularly those most at risk, while building community confidence in municipal preparednessActionable intelligence:
Receive clear, mapped outputs showing vulnerability hotspots, prioritizing intervention recommendations, and indicators you can monitor over time
Limitations
While social vulnerability assessments are capable of providing valuable insights for emergency planning and climate adaptation, it is important to understand their scope and limitations.
Data gaps:
Our assessments are primarily based on data collected by Statistics Canada for the Census of the Population. While this data represents the most complete and reliable collection of demographic and socio-economic data available nationally in Canada, several key vulnerable populations cannot be identified through census data alone. In particular, information on unhoused populations, persons with chronic health and mental health conditions, and members of the 2SLGBTQ+ populations that have been identified as having greater vulnerability during and throughout the recovery phase of disasters cannot be quantified through public census profile data. While some of this data may be available in microdata, access to it is often restricted to ensure individual and household privacy and anonymity.Aggregate data constraints:
Our assessments rely primarily on census data aggregated to neighbourhood levels (i.e., dissemination areas). This means we identify areas with higher concentrations of vulnerable populations, but cannot pinpoint individual households or specific addresses that may require additional assistance.Snapshot in time:
Demographic and socio-economic data reflect conditions at the time of the most recent Census. Communities change—new developments emerge, populations shift, and economic conditions evolve—meaning vulnerability profiles require periodic updates to remain current. Importantly, Canada’s 2021 Census was conducted midway through the COVID-19 pandemic, which likely affected employment, income, and housing data in ways that may not reflect current circumstances.Quantifiable factors only:
Our analysis focuses on measurable demographic, socio-economic, and (optionally) local environmental indicators of vulnerability. Important elements of community resilience—such as social cohesion, cultural practices, formal and informal support networks, and individual agency—are difficult to quantify and may not be fully captured in the assessment.Correlation, not causation:
Vulnerability indicators help to identify populations statistically more likely to face challenges and barriers during disasters and throughout recovery. However, individual circumstances may vary significantly. For example, not all elderly residents lack mobility and live on fixed incomes, and not all low-income households lack preparedness resources.Complement, not replacement:
Social vulnerability assessments enhance—but do not replace—local knowledge, community engagement, and relationship-building with vulnerable populations. The most effective emergency planning combines data analysis with ongoing community partnerships and builds on lived experiences.
We work closely with municipalities and our partners to understand these limitations and ensure vulnerability assessments are used appropriately as one tool within a broader, equity-focused approach to community resilience.
Key Community Questions
Here are 10 questions we developed for a community seeking to better understand extreme heat vulnerability. We quickly address how an extreme-heat-focused vulnerability assessment and mapping can help guide decisions and assist policy-makers:
Where are our highest-risk neighbourhoods?
Maps identifying vulnerability hotspots let decision-makers prioritize limited resources—whether for cooling centre placement, outreach, or infrastructure investment—in the areas that need them the most, rather than spreading efforts evenly across the community.Who is most at risk, and where do they live?
Understanding which demographic groups (e.g., seniors living alone, low-income renters, linguistically isolated residents) are concentrated in which neighbourhoods allows targeted public health outreach, wellness check programs, and social service planning that can be tracked and evaluated over time.Which neighbourhoods have the least access to cooling resources?
Measuring proximity to parks, waterbodies, and official cooling facilities reveals service gaps. This directly informs decisions about where to open new cooling centres, expand transit access to existing ones, or install community water features—all of which can be monitored for uptake.Where does low tree canopy or high pavement cover make the heat worse?
Identifying heat-amplifying physical conditions at the neighbourhood scale supports measurable urban forestry and green infrastructure targets (e.g., increasing canopy cover by X% in high-priority areas within a defined timeframe).Where do environmental exposure and social vulnerability overlap?
Some neighbourhoods face both extreme heat AND high social vulnerability—a compounding risk. Mapping these overlaps helps teams identify the most urgent intervention zones and justify resource allocation to leadership and funders.What are the specific drivers of vulnerability in different parts of the community?
Vulnerability looks different from neighbourhood to neighbourhood—it might be driven by housing age in one area and social isolation in another. Understanding these local drivers allows teams to design differentiated strategies rather than one-size-fits-all programs, and to set neighbourhood-specific improvement targets.Are there areas where residents appear resilient despite difficult conditions, and why?
Identifying neighbourhoods that score better than expected given their demographics can reveal protective factors—strong social networks, good access to services, effective community programs—that can be studied and replicated elsewhere.How does our housing stock contribute to heat risk?
Older buildings without air conditioning or adequate insulation trap heat. Mapping housing suitability indicators helps target home retrofit programs, bylaw updates, and landlord education campaigns—all of which are measurable through permit data and follow-up assessments.Where should we focus proactive wellness and communications outreach during extreme heat events?
Rather than broadcasting generic public advisories, teams can pre-identify priority areas and populations for direct outreach during heat events, and track whether contact rates in those areas improve year over year.Are our interventions working over time?
By establishing a baseline EHVI now, teams can re-run the assessment using future census data to measure whether vulnerability indicators—income levels, housing conditions, canopy cover, access to cooling—have improved in targeted areas, providing concrete evidence of progress for elected officials and the public.
Social vulnerability assessments can help address similar questions for other hazards.
Getting Started
Ready to understand and protect your community’s most vulnerable residents? Looking to learn more about the process of social vulnerability assessments? Tap the button below to complete our five-minute form to help us understand your community’s needs. We will then contact you to discuss how a vulnerability assessment can strengthen your community’s resilience.
Levelling Up!
Looking to take social vulnerability assessments to the next level? Here are some suggestions for ways to make your social vulnerability information more detailed, to communicate the results internally or to the public, and to combine it with qualitative approaches:
Add Microdata
The public profile data RMC uses by default is somewhat limited. In particular, it is lacking information about health and mental health conditions, disabilities, and 2SLGBTQ+ representation that may be relevant to your community. By accessing Statistics Canada’s microdata, we can work with you to build a more detailed and complete understanding of vulnerable groups in your community.
Story Maps
For ArcGIS Enterprise communities, Story Maps help bring your social vulnerability maps to the public through a detailed narrative that combines text, media, and maps to tell your community's story. Story Maps are a popular choice for conveying critical hazard information, educating residents, sharing your work, and promoting transparency and accountability. Let us help you build yours!
Community Engagement
Social vulnerability assessments and mapping are one part of a comprehensive approach that combines quantitative data with qualitative methods, local and Indigenous knowledge, and community engagement to best capture and understand your community’s hazard and climate vulnerabilities. From community mapping exercises to guided hikes, develop a more complete picture of your community's vulnerability and resilience!
Frequently Asked Questions
Is funding available for social vulnerability assessments?
Maybe! Depending on where your community is located and how many grants your community has recently received for other purposes, federal, provincial, and NGO funding may be available to assist with conducting a social vulnerability assessment.Our community has data we want to include in a vulnerability assessment. Can you use it?
Maybe. To be most effective, we require that all inputs to our social vulnerability assessment be available at the census dissemination area (DA) level. Often, sensitive vulnerability data, such as unhoused census information, health data, and emergency medical call location records, is aggregated to protect privacy and ensure confidentiality and may not be appropriate for inclusion in the assessment. RMC will work with your team to determine which potential inputs have the greatest potential for inclusion in your community, based on our past experience and methodological requirements.Will you present your findings at our staff/council/public meeting(s)?
Yes! We will work with your teams in the proposal stage to customize the information for each specific audience, the timing of the presentations, and what you would like each audience to take away. Typically, we require 30–40 minutes for our presentation with 20–30 minutes for Q&A. Costs for creating and presenting will vary by project.Will you create the flooding/wildfire/landslide data as part of a social vulnerability assessment?
No. While we can integrate existing hazard threat data into a more comprehensive social vulnerability assessment, RMC does not have the expertise, tools, or capacity to perform the modelling necessary to produce flood, wildfire, seismic, landslide, or other hazard threat assessments. RMC is able to work with the engineering and geoscience experts you’ve selected for this work to integrate a social vulnerability assessment into specific hazard threat modelling work for your community.My community is small, will RMC’s approach work for us?
Our traditional quantitative approach to social vulnerability assessments requires a minimum number of “neighbourhoods” (i.e., census dissemination areas—or “DAs”) to produce statistically valid results and therefore isn’t appropriate for smaller communities. For smaller communities, we recommend a combination of qualitative methods and community engagement to identify and map vulnerable populations. RMC and our partners are well-suited to help with this more hands-on approach!Will this approach work for First Nations, Métis, or Inuit communities?
We generally recommend a more targeted approach that combines qualitative methods and multiple rounds of community engagement to identify and map vulnerability for Indigenous communities. RMC’s traditional quantitative approach is, unfortunately, not well-suited to identifying vulnerabilities for most Indigenous communities due to data requirements, our reliance on census data that often poorly represents Indigenous people, and its inability to account for resilience-building measures integrated into traditional and cultural practices. In our experience, community mapping exercises, local census data, and guided engagement with community members are more effective approaches for identifying and addressing social vulnerabilities within Indigenous communities. RMC and our partners can help your community explore which approaches are best for you.Why not use microdata for all vulnerability assessments?
While microdata provides slightly more accurate results for vulnerability indicators in public census profiles and access to additional information not contained in the public census datasets, such as chronic health conditions and disabilities, this information comes at a significant price. First, gaining access to microdata is time-consuming and expensive. Second, we are limited in the information we can access and, ultimately, share when using microdata, to ensure the privacy and confidentiality of census participants. While our accuracy may increase slightly and more vulnerable groups may be represented, there is no guarantee that microdata will ensure this, and we will be more restricted in the types of information we can ultimately share with you and the public. The decision to use microdata should be carefully considered, with an understanding of both its potential benefits and limitations. See our notes on microdata for more information, and let us work with you to see if microdata is appropriate for your community.Will this approach work for communities located in the United States?
Yes. However, due to recent trade issues and border enforcement activities enacted by the US Federal Government under President Donald Trump, which are having significant impacts on Canadian businesses and Canadians, we are currently unable to work with US partners at this time. We sincerely hope that fair and equitable trade relations can quickly resume with our Southern neighbours!Will this approach work for communities located in the European Union or elsewhere outside Canada?
RMC’s quantitative approach is adaptable to locations outside of Canada, assuming similar census data is available. We are already working on related projects with EU partners and would be happy to meet with your team to discuss potential collaboration opportunities for your community. As RMC does not have detailed and comprehensive socio-economic vulnerability data outside of Canada, additional time will be needed to work with your team to identify and acquire the necessary data from your local or national statistics departments.