Arborlook
Arborlook Insights Risk & Response

Four Mile Fire Department

VOLUNTEER CO 7 Stations
Vision 20/20 Part of the Discovery Data Hub · Vision 20/20 + Arborlook Insights
~463
Residents (2025 est.)iResidents, 2025 estimate. People living inside your NERIS (National Emergency Response Information System) boundary. 2020 census blocks show where each tract’s residents live, which places the ACS 2020-2024 population inside or outside the boundary; Census Bureau population estimates then carry it forward to July 2025. Unrounded estimate 463. Percentages and the Peer Comparison use the survey-era figure (479) so they match the data they come from. Small-department estimate. With under 1,000 residents, a few census blocks on the boundary line decide the count. Checked against township populations, half of estimates this size fell within 12.5% and about one in four missed by more than 25%, so treat this figure as approximate.
10.9
Sq Miles
44
Density / Sq Mi
4
Census Tracts
Very High
NRI Risk RatingiNRI Risk Rating. FEMA’s national-percentile bands on the composite Risk Score (91 for Four Mile Fire Department, shown numerically in the Peer Comparison table below): Very Low (<20), Relatively Low (20-39), Relatively Moderate (40-59), Relatively High (60-79), Very High (80+). Composite combines all 18 hazards via Expected Annual Loss × Social Vulnerability ÷ Community Resilience.

Page generated September 2026 · Hazards: FEMA NRI v1.20 · Demographics: ACS 2024 (2020-2024 5-year) · Boundaries and incidents: NERIS Public · Disasters: OpenFEMA

Community Risk Assessment

in partnership with Vision 20/20

This page assembles the public-data foundation of a Community Risk Assessment for Four Mile Fire Department. The Vision 20/20 Community Risk Assessment Guide walks through the full process in six steps:

  1. 1Identify risksThis page
  2. 2Prioritize risksThis page + CRA/SOC risk matrix
  3. 3Develop strategies and tacticsCRA/SOC
  4. 4Prepare the CRR planCRA/SOC
  5. 5Implement the planResponse Analytics
  6. 6Monitor, evaluate, and modifyResponse Analytics

Steps 1 and 2 start here: incident data, demographics, vulnerability factors, and natural hazard risk across your service area. The remaining steps are local work with your crews and community partners, and the tags show where our paid plans help.

Service Area Overview

Your department boundary, station locations, and population density by census tract. Switch to block-group resolution for a finer view. The sections below cover community vulnerability, fire and EMS risk drivers, and natural hazards across your service area.

Reading the map: Darker blue shows denser areas (more residents per square mile). Density shapes where call volume concentrates and how much distance separates residents from your stations.

Resolution:

Service area, population, and census tract assignments are based on department boundaries from NERIS Public. Boundary accuracy varies by jurisdiction. View this department’s boundary record or download the polygon as GeoJSON straight from the source (no login).

Reported Incident Activity

Source: NERIS Public Incident Basics; window June 2025 through May 2026; as of the September 2026 refresh

Counts from the NERIS public feed; 5 of 12 window months on file; the first report on the feed is from January 2026. Coverage varies as departments transition from NFIRS to NERIS.

Incidents Reported
48
5 of 12 window months on file
Medical / EMS
17
35% of reported incidents
Fire
4
including 0 structure fires
Per 1,000 Residents
n/a
needs 6 reporting months to annualize

Charts start at January 2026, the department’s first month on the public feed, and run through the last settled feed month; a month at zero means no reports reached the feed. Busiest month on file: March 2026, 16 reports. Categories averaging fewer than 5 reports a month are left off the trend charts; counts that small are mostly noise.

By Hour of Day

By Day of Week

Incident distribution over the same window, in the department’s local time. Demand peaks around 11 AM.

Call Composition

Incidents by primary type over the window, following the NERIS incident type hierarchy.

About 35% of reported runs ended with no emergency at the scene: false alarms, good intent calls, and runs cancelled en route.

Prevention Opportunities

Counts from the same window for the NERIS call types that prevention programs target. The public feed shares medical subtypes only for vehicle collisions, so falls show up through lift assists.

Call typeReportsPrevention program
Motor vehicle collisions6Roadway safety: car seat checks, distracted-driving outreach, post-crash referrals
Outdoor and vegetation fires4Burn permits, defensible space, wildland-interface prep
Gas leaks and CO2CO alarm checks alongside smoke alarm visits

Demographics & Vulnerability

Source: U.S. Census Bureau, American Community Survey 5-year (2020-2024 vintage)

Demographics and Your Workload

Demographics drive both sides of your workload: where you need smoke alarm programs, and how many of your calls are EMS. The data below shows who generates the most emergency demand and who faces the greatest barriers when one happens.

Community Vulnerability

Reading the map: Overall Vulnerability is a CDC SVI-aligned composite (0 to 100; higher = more socially vulnerable, shown red), colored on a fixed national scale like the hazard map. Toggle to an individual factor (Poverty Rate, Disability Rate, etc.) and colors switch to a relative scale ranked within your own tracts, so the reddest tracts are always your highest-need ones even if your whole department scores low nationally. Switch to block-group resolution for finer detail.

Resolution:

Community Profile: the four CDC SVI themes

This profile is organized by the four themes of the CDC/ATSDR Social Vulnerability Index, the framework most community risk assessments use to describe which residents will need the most help in an emergency. [CDC SVI]

Factors that also drive fire deaths, EMS demand, or outreach are compared once, in the section the evidence ties them to; each theme below links to them.

Theme 1: Socioeconomic Status

Income, employment, education, and health-insurance access.

Median Household Income
$103,932
Peers: $80,496 · National: $90,074
Below 150% Poverty
13.4%
Peers: 18.2% · National: 20.1%
Median Home Value
$889,580
Peers: $450,476 · National: $406,876

Headline figures from the U.S. Census Bureau ACS; see the table below for the full Theme 1 factor list with sourcing and relevance notes.

Community Factor Your Community Peer AverageiPeer Average. Average across up to 4 peer departments matched on size band, department type, density class, and Census region. Used in the “vs. Peers” column throughout the page. See the methodology page for full criteria. National Average vs. PeersYouPeersU.S.
Unemployment Rate
Share of civilian labor force out of work; associated with higher stress and worse self-reported health (HHS Healthy People 2030) [HHS]
5.4% 4.2% 5.2%
National average: 5.2%Your community: 5.4%Peer average: 4.2%1.3x higher
No High-School Diploma
Adults 25+ without a high-school credential; CDC plain-language guidance recommends short sentences and one main idea each to broaden CRR accessibility [CDC]
1.2% 6.5% 10.4%
National average: 10.4%Your community: 1.2%Peer average: 6.5%5.4x lower

Also in this theme: uninsured rate 4.3%, compared in EMS Risk Factors.

Theme 2: Household Characteristics

Age, disability, family structure, and language: who's most likely to need help in an emergency.

Age drives EMS call volume, with the highest utilization among adults 65 and older and elevated rates among children under 5. It also sets fire-safety education priorities and evacuation-assistance needs. The dark marker on each bar shows the national average.

Under 5
3.9% (19)
Ages 5-17
12.5% (60)
Ages 18-64
60.4% (289)
Ages 65-74
16.9% (81)
Ages 75-84
5.2% (25)
Ages 85+
1.0% (5)
Your Community
National Average
Community Factor Your Community Peer Average National Average vs. PeersYouPeersU.S.
Single-Parent Households
Households with children headed by one adult; family structure associated with vulnerability in emergencies, largely via household resources [Census]
2.4% 3.1% 6.1%
National average: 6.1%Your community: 2.4%Peer average: 3.1%1.3x lower
Limited-English Households
Households where no adult speaks English “very well”; informs CRR materials and outreach in other languages [Census]
0.0% 0.2% 4.3%
National average: 4.3%Your community: 0.0%Peer average: 0.2%None reported

Also in this theme: disability rate 6.7%, compared in Fire Risk and EMS Risk Factors.

Theme 3: Racial & Ethnic Minority Status

Community racial and ethnic composition.

Community Factor Your Community Peer Average National Average vs. PeersYouPeersU.S.
Minority Population
Share of residents identifying as a race or ethnicity other than non-Hispanic White [Census]
10.9% 13.5% 42.7%
National average: 42.7%Your community: 10.9%Peer average: 13.5%1.2x lower

Race and ethnicity are shown here because they're part of the CDC SVI and standard in community descriptions. They are deliberately excluded from the Overall Vulnerability composite above, which is built only from need-based factors (age, poverty, disability, housing, and transportation) so it doesn't use a protected characteristic as a risk proxy.

Theme 4: Housing Type & Transportation

Building type, crowding, vehicle access, and congregate living arrangements.

Community Factor Your Community Peer Average National Average vs. PeersYouPeersU.S.
Multi-Unit Structures
Housing in structures with 10 or more units; a CDC SVI Theme 4 variable where shared egress and alarm systems shape evacuation [CDC SVI]
2.0% 1.0% 14.8%
National average: 14.8%Your community: 2.0%Peer average: 1.0%2.1x higher
Group Quarters
Residents in nursing homes, assisted living, dorms, or corrections; a CDC SVI Theme 4 variable [CDC SVI]
1.6% 3.2% 2.4%
National average: 2.4%Your community: 1.6%Peer average: 3.2%2.0x lower

Also in this theme: mobile homes 0.0% in Fire Risk Factors, crowded housing 1.1% in CRR Outreach, and households without a vehicle 0.4% in EMS Risk Factors.

Congregate settings. Assisted living and nursing facilities, schools and childcare, and other group quarters concentrate the residents who need the most help in an emergency. The census shows the neighborhoods where these populations live.
  • 1.6% of residents live in group quarters (nursing homes, assisted living, dorms, corrections), vs 2.4% nationally
  • 3.9% are under 5 and 12.5% are school-age (5 to 17), where childcare and schools concentrate
  • 6.3% are 75 or older, where assisted-living and nursing demand concentrates

Based on 5-year American Community Survey estimates of resident populations. A named target-hazard list (schools, hospitals, care facilities) requires local data beyond the census.

Fire Risk Factors

About these factors. The factors below come from public housing, age, disability, and economic data. Each one has a documented link to fire deaths or fire spread, cited in the table. Together they show which parts of your community are most likely to see a severe outcome when a fire starts.

The Reported Incident Activity section above adds the call counts the department has published through NERIS. The finer questions come from your own incident records: which tracts the calls come from, how fast crews arrive, and what each run takes. Response Analytics measures those from your NERIS data.

What this means for planning: 13.0% of housing units are vacant, 1.3x the national average. Vacant properties carry elevated fire risk: no maintenance, unauthorized access, and nobody there to report a fire early. Work with code enforcement on vacant property inspections and securing abandoned structures.

Reading the map: Colors show relative risk within your jurisdiction (red = highest-need tracts, green = lowest-need). Check the table below for overall levels vs. peers and national averages.

Resolution:
Risk Factor Your Community Peer Average National Average vs. PeersYouPeersU.S.
Population 75+
Adults 75 and older carry the highest fire-death rate of any age group and are least able to self-evacuate [USFA]
6.3% 9.3% 7.0%
National average: 7.0%Your community: 6.3%Peer average: 9.3%1.5x lower
Population Under 5
Children under 5 have the highest fire-death rate among children and are usually too young to escape a fire without help [USFA]
3.9% 4.6% 5.6%
National average: 5.6%Your community: 3.9%Peer average: 4.6%1.2x lower
Poverty Rate
Lower-income and higher-deprivation tracts have significantly higher residential fire rates, tied to older housing, overcrowding, and fewer working smoke alarms [Peer-reviewed]
6.9% 10.2% 12.5%
National average: 12.5%Your community: 6.9%Peer average: 10.2%1.5x lower
Disability Rate
Physical disability is the second-leading human factor in U.S. residential fire fatalities; mobility-limited residents need targeted evacuation planning [USFA]
6.7% 16.3% 13.3%
National average: 13.3%Your community: 6.7%Peer average: 16.3%2.4x lower
Pre-1980 Housing
Older housing predates modern electrical and fire codes and is less likely to have hardwired smoke alarms [Census]
47.6% 46.1% 49.8%
National average: 49.8%Your community: 47.6%Peer average: 46.1%≈ average
Vacancy Rate
Intentional actions are the leading cause of vacant residential building fires (~34%); 53% spread to involve the entire structure [USFA]
13.0% 24.3% 10.1%
National average: 10.1%Your community: 13.0%Peer average: 24.3%1.9x lower
Mobile Homes
CDC/ATSDR SVI Theme 4 (Housing Type and Transportation) vulnerability variable; smaller footprint shortens egress time and limits compartmentation [CDC SVI]
0.0% 11.5% 5.5%
National average: 5.5%Your community: 0.0%Peer average: 11.5%None reported

EMS Risk Factors

EMS calls make up the majority of fire department call volume nationally. The demographics below are the strongest predictors of where that demand comes from in your service area.

What this means for planning: 23.2% of residents are over 65. Older populations typically have higher EMS utilization rates. Consider community paramedicine programs for wellness checks and medication management support. Fall prevention education pays off in this population.

Reading the map: Colors show relative risk within your jurisdiction (red = highest-need tracts, green = lowest-need). Check the table below for overall levels vs. peers and national averages.

Resolution:
Risk Factor Your Community Peer Average National Average vs. PeersYouPeersU.S.
Population 75+
Older adults are consistently the heaviest per-capita users of ambulance transport, driven by falls, cardiac events, and chronic-disease complications.
6.3% 9.3% 7.0%
National average: 7.0%Your community: 6.3%Peer average: 9.3%1.5x lower
Disability Rate
Residents with mobility, sensory, or cognitive disabilities are more likely to need EMS transport and often require additional on-scene assistance time.
6.7% 16.3% 13.3%
National average: 13.3%Your community: 6.7%Peer average: 16.3%2.4x lower
No Vehicle Access
Households without a vehicle face documented transportation barriers to medical care, including missed appointments and delayed visits [Peer-reviewed]
0.4% 3.3% 8.4%
National average: 8.4%Your community: 0.4%Peer average: 3.3%7.9x lower
Uninsured Rate
Uninsured adults are about three times more likely than continuously insured adults to have an unmet medical need due to cost (CDC NHIS) [CDC]
4.3% 11.1% 8.4%
National average: 8.4%Your community: 4.3%Peer average: 11.1%2.6x lower
Poverty Rate
Poverty is correlated with poorer health outcomes and reduced healthcare access; a recognized social determinant of health [HHS]
6.9% 10.2% 12.5%
National average: 12.5%Your community: 6.9%Peer average: 10.2%1.5x lower
Below 150% Poverty
Share below 150% of the federal poverty level; CDC PLACES uses this exact threshold to model chronic-disease prevalence [CDC]
13.4% 18.2% 20.1%
National average: 20.1%Your community: 13.4%Peer average: 18.2%1.4x lower

Natural Hazard Risk

What this means for planning: With a risk score of 82.2 (Very High nationally), avalanche is your leading natural hazard. Coordinate with regional avalanche centers and establish backcountry rescue protocols. Maintain technical rescue readiness for snow burial.

Top Hazards in Your Service Area

The top 5 hazards by life-safety impact, plus regionally critical hazards for CO (shown with unadjusted NRI scores). Life-safety loss uses FEMA’s Value of Statistical Life ($13.7M per fatality or 10 injuries); total loss adds FEMA’s building, population, and agriculture loss estimates. NRI methodology · Source: FEMA NRI v1.20 (Mar 2023)

Hazard Risk Score Rating Life-Safety Loss
$/yr
Total Loss
$/yr
Learn more
Avalanche TOP LIFE-SAFETY HAZARD 82.2 Very High $298K/yr $298K/yr Avalanche.org
Wildfire 99.2 Very High $14K/yr $327K/yr wildfirerisk.org
Lightning 89.2 Very High $10K/yr $10K/yr NWS lightning safety
Tornado 53.3 Relatively Moderate $4K/yr $15K/yr NOAA SPC
River Flood 68.4 Relatively High $4K/yr $174K/yr FEMA flood maps

Reading the map: Colors show national risk levels (red = Very High nationally, green = Very Low nationally), so they compare directly with every U.S. community.

Resolution: Tract

Historical Disaster Declarations

Your county has had 6 FEMA disaster declarations in the last 10 years and 16 in the last 25 years.

The table lists the 5 most recent declarations from OpenFEMA. If the latest one looks old, OpenFEMA has no newer county-level declarations for your county.

DateTypeTitle
2024-07-31FireStone Mountain Fire
2021-12-31FireWildfires and Straight-Line Winds
2021-12-30FireMarshall Fire
2020-10-17FireCalwood Fire
2020-03-28BiologicalCOVID-19 Pandemic

CRR Outreach Profile

These factors shape how you run Community Risk Reduction (CRR) outreach: prevention messages, communication channels, and inspection cadence. They do not necessarily mean higher fire or EMS risk.

Reading the map: The table below gives one department-wide rate per factor; the map shows which tracts drive it, so outreach (mailers, inspections, station open houses) can target where it will do the most good.

Resolution:
Outreach Factor Your Community Peer Average National Average vs. PeersYouPeersU.S.
Wood Heating
Wood and other solid-fuel heating; outreach focus: annual chimney inspection and cleaning, hearth screens, three-foot clearance from anything that can burn [USFA]
10.7% 22.5% 1.3%
National average: 1.3%Your community: 10.7%Peer average: 22.5%2.1x lower
Kerosene / Fuel Oil Heat
Liquid-fueled and portable space heaters; outreach focus: three-foot clearance, turn off when leaving the room or going to bed, CO and ventilation awareness [USFA]
0.0% 3.2% 3.8%
National average: 3.8%Your community: 0.0%Peer average: 3.2%None reported
Bottled / Tank LP Heat
Bottled, tank, or LP gas heating; outreach focus: tank leak checks, regulator and connector inspection, CO alarm placement [Census]
36.9% 23.6% 4.8%
National average: 4.8%Your community: 36.9%Peer average: 23.6%1.6x higher
Renter-Occupied
Share occupied by renters; outreach differs from owner messaging: landlord coordination on smoke alarms, tenant-focused checklists, multilingual notices [USFA]
16.3% 17.1% 35.0%
National average: 35.0%Your community: 16.3%Peer average: 17.1%≈ average
Overcrowding
More than one occupant per room (Census/HUD threshold); shapes outreach where multiple residents share sleeping space and egress paths [HUD]
1.1% 2.3% 3.4%
National average: 3.4%Your community: 1.1%Peer average: 2.3%2.1x lower
No Internet Access
Households without home internet may miss web-based emergency alerts, telehealth, and outreach; favor radio, mailers, and door-to-door channels [Census]
1.5% 8.6% 6.5%
National average: 6.5%Your community: 1.5%Peer average: 8.6%5.7x lower

Peer Comparison

Departments similar to yours in size, type, density class, and region. Peer benchmarks put your community risk profile in context and support “demonstrated need” narratives in grant applications.

Department State PopulationiPopulation. Survey-era estimate (ACS 2020-2024), used here so every department in this table is measured the same way. The summary above carries it forward to 2025. Risk ScoreiComposite Risk Score. FEMA NRI’s composite index combining all 18 hazards: Expected Annual Loss × Social Vulnerability ÷ Community Resilience, population-weighted across your tracts. Individual hazards may score higher than the composite; the composite reflects total expected impact across all hazards. This is the same score behind the “NRI Risk Rating” band shown at the top of the page. FEMA methodology. 65+ % Multi-Unit % Stations
Four Mile Fire Department (You) CO 479 91 23.2% 2.0% 7
Fernwood Rural Fire Protection District ID 585 93.5 27.4% 2.1% 1
Trenton Fire Department UT 504 90.7 15.9% 1.3% 1
Rollins Volunteer Fire Department MT 434 93.9 32.0% 0.9% 1
Sunnyside Rural Fire District ID 502 80.7 24.8% 0.0% 1
Vision 20/20

This free community risk profile is part of the Discovery Data Hub, a partnership between Vision 20/20 and Arborlook Insights to keep risk data in the hands of the fire service.

From risk profile to finished CRA/SOC

This profile covers steps 1 and 2 of the Vision 20/20 process with public data. The paid plans add your own NERIS incident records and carry the work through to a written assessment.

Response Analytics

Measure response against this risk

  • Response times mapped tract by tract, against NFPA 1750-aligned goals you set
  • Priority tracts where high risk meets slow response
  • A weekly brief every Monday and a monthly board packet
Start a free 60-day trial

The trial opens with a NERIS data quality assessment, and that view stays free after the trial ends.