Arborlook
Risk & Response
by Arborlook Insights

Custer County, SD

Community risk profile | NRI Score: 91.9 Very High

8,892
Population
11
Departments
13
Stations
2
Census Tracts

Natural Hazard Loss Profile

Expected annual loss across the 18 natural hazards in FEMA's National Risk Index. Life safety is expressed in fatality-equivalents, combining expected deaths and injuries. Property loss counts building damage only, separate from agriculture.

Natural Hazard Life Safety
0.08
expected fatality-equivalents per year, natural hazards only
56th highest of 66
Life Safety per 100k
0.86
natural hazard fatality-equivalents per 100,000 residents
63rd highest of 66
Natural Hazard Property Loss
$7.4M
expected building loss per year, natural hazards only
13th highest of 66
Property Loss per Resident
$837
natural hazard building loss per resident per year
15th highest of 66

These figures cover natural hazards only. Structure fire, EMS, and motor vehicle incidents are not included in the National Risk Index and are not counted here, so this is not an all-cause life safety measure. For Custer County, the largest single contributor is Cold Wave, 35% of the life-safety total.

Custer County carries an expected under 1 natural hazard fatality-equivalents and $7.4M in building loss per year. Rank chips compare the 66 South Dakota counties. Nationally, Custer County ranks 2783rd of 3,222 U.S. counties for life-safety loss, 1960th for life safety per 100k residents, 1828th for property loss, and 220th for property loss per resident. Computed from census tract data covering every resident, independent of fire department boundaries.

Add fire mortality, cause, and loss

Natural hazard exposure is one half of the picture. The other half is what your departments run on: fire deaths and injuries, cause of ignition, dollar loss per incident. That comes from NERIS incident reporting, and it grows as departments serving Custer County enroll. Our Regional tier brings it together across your jurisdiction, with participating departments, alongside response time analytics, cross-department benchmarking, and coverage gap analysis.

Talk to us about Custer County See what a department sees

What Drives the Loss

85%
12%
Property (buildings): $7.4M (84.8%)
Life safety: $1.1M (12.0%)
Agriculture: $276K (3.2%)

Total expected annual loss: $8,771,962 per year. Life safety is shown here in dollars, at FEMA's $13.7M value of statistical life, so the three shares sum to the total.

Hazards Ranked Two Ways

The hazard that threatens people is often not the hazard that destroys buildings. Both columns cover the same 18 hazards over the same year.

By life-safety loss ($/yr)

Cold Wave
$368K
Tornado
$226K
Wildfire
$124K
Lightning
$89K
Strong Wind
$89K
Hail
$58K

By property loss ($/yr)

Wildfire
$3.8M
Inland Flooding
$3.0M
Hail
$201K
Tornado
$168K
Winter Weather
$82K
Strong Wind
$69K

Census Tract Risk Map

Shaded by quintile across the census tracts in Custer County. Gray tracts have no modeled loss or no resident population. Per-resident figures on this map use the National Risk Index 2020 tract population.

Fire Service Profile

100%
Volunteer: 100% (11)
Residents per Station
684
census population per registered station
Stations per 100k
146.2
registered stations per 100,000 residents

Department composition covers the 11 departments registered in NERIS Public for Custer County, SD. Departments that have not registered are not counted. Station coverage divides census population by registered stations; department service areas overlap, so their populations are not summed.

Department Rankings

Fire and EMS departments serving Custer County. Click column headers to sort.

NRI Rating is from FEMA's National Risk Index, which measures community risk across 18 natural hazards using expected annual losses, social vulnerability, and community resilience. Life-Safety Loss uses FEMA's Value of Statistical Life ($13.7M per expected fatality) to estimate annual risk to human life.

Department boundaries and station counts are self-reported through NERIS Public and may not reflect current service areas. Population and Life-Safety Loss reflect each department's full jurisdiction. County-level risk metrics are computed from census tract data and are not affected by boundary accuracy. See full methodology.

Showing 11 departments
Department Est. Population Life-Safety Loss NRI Rating Stations
Rapid Valley Fire Department 35,446 $4.3M Relatively High 1
Mcintosh Volunteer Fire Department 4,160 $2.4M Very High 1
New Underwood Fire Department 14,511 $1.8M Very High 1
Buffalo Gap Volunteer Fire Department 13,597 $1.7M Very High 1
Hot Springs Volunteer Fire Department, Inc 13,597 $1.7M Very High 1
Edgemont Volunteer Fire Department 9,398 $1.2M Very High 1
Custer Volunteer Fire Department 8,892 $1.1M Very High 2
Rockerville Volunteer Fire Department, Inc. 8,778 $1.0M Very High 2
Argyle Volunteer Fire Department 6,339 $762.4K Very High 1
Highlands Volunteer Fire Department 6,339 $762.4K Very High 1
Pringle Volunteer Fire Department 6,339 $762.4K Very High 1
No departments match your search.

Risk Snapshot

9.0%
Poverty Rate
33.7%
Age 65+
18.9%
Disability Rate
10.8%
Uninsured
38.7%
Pre-1980 Housing
16.2%
Mobile Homes
15.9%
Vacancy Rate
13.9%
Wood Heat
$84,195
Median HH Income

FEMA Disaster Declarations

6
Last 10 Years
11
Last 25 Years
Fire
Most Frequent

Response-level intelligence for your region

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