FEMA National Risk Index Scraper — Property Hazard API

Search official FEMA National Risk Index (NRI) v1.20 county and census-tract profiles for property insurance, real estate, catastrophe planning, emergency management, climate-risk research, and community resilience analysis.

Each profile combines FEMA's composite National Risk Index, Expected Annual Loss, Social Vulnerability, Community Resilience, exposure values, and detailed profiles for all 18 NRI hazards. The actor uses FEMA's public, no-key ArcGIS services owned by FEMA_NationalRiskIndex.

Fast start

Empty input returns Travis County, Texas (FIPS 48453) as a deterministic one-row example:

{
  "geography": "county",
  "countyFips": "48453",
  "sortBy": "risk",
  "maxResults": 25
}

Find Texas counties with the highest hail risk:

{
  "geography": "county",
  "state": "TX",
  "hazardType": "Hail",
  "minHazardRiskScore": 95,
  "sortBy": "hazardRisk",
  "maxResults": 25
}

Compare high-wildfire-risk California counties with at least $10 million in modeled wildfire Expected Annual Loss:

{
  "state": "CA",
  "hazardType": "Wildfire",
  "minHazardAnnualLoss": 10000000,
  "hazardRiskRatings": ["Very High", "Relatively High"],
  "sortBy": "hazardLoss",
  "maxResults": 50
}

Retrieve an exact census tract:

{
  "geography": "censusTract",
  "tractFips": "48453001919",
  "maxResults": 1
}

Search and filters

• county or census-tract geography
• exact five-digit state-county FIPS or 11-digit census-tract FIPS
• county-name substring and two-letter state
• composite FEMA risk ratings
• minimum composite risk score and Expected Annual Loss
• one selected hazard with hazard-specific ratings, score, and loss filters
• composite risk, loss, vulnerability, resilience, selected-hazard, or name sorting
• total maxResults cap from 1–100

Exact FIPS takes precedence over broader name/state fields. Empty input applies only the deterministic Travis County fallback, so saved defaults do not contaminate exact searches.

Output

Each match contains:

• NRI ID, geography level, county/tract names and FIPS codes
• 2020 population, building value, agricultural value, and area
• composite NRI value, score, rating, and state percentile
• Expected Annual Loss totals for buildings, population, and agriculture
• annual loss rates and national percentiles
• Social Vulnerability score/rating/percentile
• Community Resilience score/rating/percentile
• a selectedHazardProfile for the requested hazard
• a stable hazardProfiles object containing all 18 hazards:
  • Avalanche
  • Coastal Flooding
  • Cold Wave
  • Drought
  • Earthquake
  • Hail
  • Heat Wave
  • Hurricane
  • Ice Storm
  • Inland Flooding
  • Landslide
  • Lightning
  • Strong Wind
  • Tornado
  • Tsunami
  • Volcanic Activity
  • Wildfire
  • Winter Weather
• per-hazard event/frequency, exposure, historic-loss ratio, Expected Annual Loss, annual-loss rate, and risk-index metrics
• NRI version, exact API query, official item URL, retrieval timestamp, and required FEMA caveats

No-match runs return NO_MATCHING_COMMUNITIES. Temporary source failures return SOURCE_UNAVAILABLE without making a risk conclusion.

Important interpretation and terms

FEMA says NRI data are intended for planning and broad nationwide comparisons and are not a substitute for localized risk assessment. Nationwide inputs can be less accurate than available local data. Scores and Expected Annual Loss values are modeled planning measures, not property-level forecasts, insurance quotes, claims, guarantees, or complete determinations of present risk.

This actor preserves FEMA's required citation statement on every result:

This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

Do not use FEMA or DHS logos/seals, claim FEMA endorsement, or represent modified/derived analysis as FEMA content.

Official sources

• FEMA National Risk Index overview
• Official NRI county feature layer
• Official NRI census-tract feature layer
• NRI technical documentation

Current source item: National Risk Index Data Version December 2025 (1.20.0).