Data / Rankings / National Risk Index score (FEMA) / Counties in Connecticut

Counties in Connecticut by national Risk Index score (FEMA), 2025

Capitol Planning Region had the highest national Risk Index score (FEMA) of 9 counties in 2025, at 97.4. Northeastern Connecticut Planning Region had the lowest, at 62.8. The median was 91.8. Source: the Federal Emergency Management Agency.

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Highest97.4Capitol Planning Region
Lowest62.8Northeastern Connecticut Planning Region
Median91.89 counties

Map of counties, 2025

Capitol Planning Region: 97.4 indexGreater Bridgeport Planning Region: 91.8 indexLower Connecticut River Valley Planning Region: 83.8 indexNaugatuck Valley Planning Region: 93.2 indexNortheastern Connecticut Planning Region: 62.8 indexNorthwest Hills Planning Region: 79.6 indexSouth Central Connecticut Planning Region: 95.1 indexSoutheastern Connecticut Planning Region: 88.7 indexWestern Connecticut Planning Region: 96.3 index
  • Under 82
  • 82 to 89
  • 89 to 93
  • 93 to 96
  • 96 and over
index, 2025. Source: FEMA National Risk Index, National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2025

Capitol Planning Region: 97.4 indexCapitol Planning Region97.4Western Connecticut Planning Region: 96.3 indexWestern Connecticut Planning Regi…96.3South Central Connecticut Planning Region: 95.1 indexSouth Central Connecticut Plannin…95.1Naugatuck Valley Planning Region: 93.2 indexNaugatuck Valley Planning Region93.2Greater Bridgeport Planning Region: 91.8 indexGreater Bridgeport Planning Region91.8Southeastern Connecticut Planning Region: 88.7 indexSoutheastern Connecticut Planning…88.7Lower Connecticut River Valley Planning Region: 83.8 indexLower Connecticut River Valley Pl…83.8Northwest Hills Planning Region: 79.6 indexNorthwest Hills Planning Region79.6Northeastern Connecticut Planning Region: 62.8 indexNortheastern Connecticut Planning…62.8Capitol Planning Region: 97.4 indexCapitol Planning Region97.4Western Connecticut Planning Region: 96.3 indexWestern Connecticut Planning Region96.3South Central Connecticut Planning Region: 95.1 indexSouth Central Connecticut Planning Region95.1Naugatuck Valley Planning Region: 93.2 indexNaugatuck Valley Planning Region93.2Greater Bridgeport Planning Region: 91.8 indexGreater Bridgeport Planning Region91.8Southeastern Connecticut Planning Region: 88.7 indexSoutheastern Connecticut Planning Region88.7Lower Connecticut River Valley Planning Region: 83.8 indexLower Connecticut River Valley Planning Region83.8Northwest Hills Planning Region: 79.6 indexNorthwest Hills Planning Region79.6Northeastern Connecticut Planning Region: 62.8 indexNortheastern Connecticut Planning Region62.8
index. Source: FEMA National Risk Index, National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). Retrieved 2026-10-12.

Full ranking

RankCounties2025
index
1Capitol Planning Region97.4
2Western Connecticut Planning Region96.3
3South Central Connecticut Planning Region95.1
4Naugatuck Valley Planning Region93.2
5Greater Bridgeport Planning Region91.8
6Southeastern Connecticut Planning Region88.7
7Lower Connecticut River Valley Planning Region83.8
8Northwest Hills Planning Region79.6
9Northeastern Connecticut Planning Region62.8

About this ranking

FEMA's composite natural hazard risk score for a US county, from 0 to 100: the county's national percentile rank among all counties for risk, which combines expected annual losses from 18 natural hazards with social vulnerability and community resilience. Higher means more risk.

The period is the year of the National Risk Index edition (the December 2025 edition is 2025), not a year of events. FEMA rebuilds the index with new data and methods in each edition, so values from different editions are not a time series. The index is meant for nationwide comparison and planning, not as a local risk assessment.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355. Retrieved 2026-10-12. This product uses the FEMA 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).

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

Federal Emergency Management Agency. (2025). National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE) (Counties in Connecticut by national Risk Index score (FEMA), 2025) [Data set]. Retrieved October 12, 2026, from https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355

MLA 9

National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE), Counties in Connecticut by national Risk Index score (FEMA), 2025. Federal Emergency Management Agency, 16 Dec. 2025, https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355. Invokely, https://invokely.ai/rankings/national-risk-index-score/connecticut-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

Federal Emergency Management Agency. 2025. National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). Counties in Connecticut by national Risk Index score (FEMA), 2025. Dataset. Accessed October 12, 2026. https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355. Also distributed by Invokely, https://invokely.ai/rankings/national-risk-index-score/connecticut-counties.

Harvard

Federal Emergency Management Agency (2025) National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE), Counties in Connecticut by national Risk Index score (FEMA), 2025 [Dataset]. Available at: https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355, via Invokely: https://invokely.ai/rankings/national-risk-index-score/connecticut-counties (Accessed: 12 October 2026).

BibTeX
@misc{federal_counties_in_connecticut_by_2025,
  author = {{Federal Emergency Management Agency}},
  title = {{National Risk Index Counties, National Risk Index Score Composite (RISK\_SCORE): Counties in Connecticut by national Risk Index score (FEMA), 2025}},
  year = {2025},
  howpublished = {Data set},
  url = {https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/national-risk-index-score/connecticut-counties. Publisher attribution: Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties, National Risk Index Score Composite (RISK\_SCORE). https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355. Retrieved 2026-10-12. This product uses the FEMA 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).},
}
RIS
TY  - DATA
AU  - Federal Emergency Management Agency
TI  - National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE): Counties in Connecticut by national Risk Index score (FEMA), 2025
PY  - 2025
DA  - 2025/12/16
PB  - Federal Emergency Management Agency
DB  - Invokely
UR  - https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355
L2  - https://invokely.ai/rankings/national-risk-index-score/connecticut-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/national-risk-index-score/connecticut-counties.
N1  - Publisher attribution: Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). https://fema.maps.arcgis.com/home/item.html?id=39485e8035d446a5bff03259508ae355. Retrieved 2026-10-12. This product uses the FEMA 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).
ER  -
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Rank Counties in Connecticut by national Risk Index score (FEMA) using official data, and cite the source.
rank_places {"indicator":"nri_risk_index_score","level":"province","within":"Connecticut","limit":10}
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Questions

Which county has the highest national Risk Index score (FEMA)?

Capitol Planning Region, with 97.4 in 2025, according to the Federal Emergency Management Agency.

Which county has the lowest national Risk Index score (FEMA)?

Northeastern Connecticut Planning Region, with 62.8 in 2025.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: Federal Emergency Management Agency, National Risk Index Counties, National Risk Index Score Composite (RISK_SCORE). Retrieved 2026-10-12.

National Risk Index score (FEMA): other rankings

Counties in Connecticut: more rankings