Auto · County · Montana
Insurance agencies in Custer County, MT
Competitor counts, household spending and official business counts for insurance agencies in Custer County, MT, set against other counties and the U.S.
Groundwork market score · out of 100
Score 21 out of 100: Low
Ranked #2,066 of 2,272 scored counties
#16 of 19 scored counties in Montana
- Listings
- 17
- 2 chain locations (12%)
- Official establishments
- 13
- Businesses with payroll, 2023
- Household spending a year
- $11M
- On vehicle insurance · $2,177 a household
- Spending per listing
- $645K
- 49% below the U.S.
- Listings per 10k households
- 33.7
- 2.2 times the U.S.
- Population, 2025
- 12,034
- +1.5% since 2020
See the insurance agencies around any address in Custer County
The site report maps the insurance agencies on map listings near the address, by name and distance, and sizes the households and spending around it. Or open the report at the center of Custer County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardSurvey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure
What this means
For insurance agencies, Custer County has a Groundwork market score of 21 (low): #2,066 of 2,272 scored counties and #16 of 19 scored counties in Montana. That puts it in the bottom quarter of counties.
As of September 2026, map listings count 17 insurance agencies in Custer County. Chain locations make up 12% of them, against 21% across the U.S. That is 33.7 per 10,000 households, 2.2 times the U.S. rate of 15.6.
Household spending on vehicle insurance in Custer County comes to about $11M a year: $2,177 per household, 11% above the U.S. average. That works out to $645K per agency, 49% below the U.S. figure of $1.3M.
In 2023, official counts showed 13 businesses with payroll in Custer County classed as insurance agencies and brokerages. That is one for every 388 households, against one for every 966 across the U.S. Population estimates show Custer County grew 1.5% from 2020 to 2025, slower than the U.S. (+3.1%).
How Custer County compares
The same measures for Montana and the whole U.S. Spending per listing divides a year of household spending on all vehicle insurance by the insurance agencies counted, so it measures the demand for each competitor, not any business’s revenue. Households per establishment does the same with the official count.
| Measure | Custer County | Montana | U.S. |
|---|---|---|---|
| Listings per 10k households | 33.7 | 16.5 | 15.6 |
| Spending per listing | $645K | $1.3M | $1.3M |
| Households per official establishment | 388 | 711 | 966 |
| Official establishment growth, 2019–2023 | n/a | −9.5% | −1.0% |
| Population growth, 2020–2025 | +1.5% | +5.3% | +3.1% |
| Spending per household on vehicle insurance | $2,177 | $2,106 | $1,957 |
| Median household income | $70,605 | $72,509 | $80,734 |
| Groundwork market score | 21 | 49 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 12 → 13
- Employees, 2023
- 41
- Annual payroll, 2023
- $2.7M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 172 chain locations
- Listings at the U.S. rate for this spending
- 9The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 0
- Amount
- $0
SBA-backed loans to businesses classed as insurance agencies and brokerages in Custer County, through June 2026, placed by the borrower’s ZIP code. Official establishments are businesses with payroll; the official counts leave out places with fewer than 3.
Population and households in Custer County
- Population, 2025 estimate
- 12,034+1.5% since 2020
- Households
- 5,038
- Median age
- 43.5
- Homes lived in by their owners
- 70%
- Vehicles per household
- 2.2
- Land area
- 3,783 sq. mi.
- People per square mile
- 3
- Median household income
- $70,605+33.3% vs. 2015–2019, before inflation
- Average household income
- $85,295
- Median home value
- $219,100
- Jobs located here
- 5,790
- Daytime population
- 11,387Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Custer County?
These figures cover the whole county. A site report draws rings around one address and counts what’s inside them: households, spending, jobs, and the insurance agencies on map listings by name and distance.
Or open the report at the center of Custer County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardInsurance agencies across Montana
Every Montana market ranked →The highest-scoring counties in Montana for insurance agencies, numbered among those based in Montana, with Custer County marked.
Top counties in Montana
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Lake County, MT | 83 | 10 | 8.0 | $2.8M | +6.9% | #161 of 2,272 |
| 2Carbon County, MT | 74 | 5 | 10.7 | $2.2M | +9.1% | #358 of 2,272 |
| 3Sanders County, MT | 67 | 8 | 14.7 | $1.5M | +12.9% | #573 of 2,272 |
| 4Ravalli County, MT | 65 | 20 | 10.7 | $2.1M | +9.4% | #616 of 2,272 |
| 5Park County, MT | 59 | 12 | 14.3 | $1.5M | +5.7% | #819 of 2,272 |
| 6Lincoln County, MT | 51 | 14 | 15.4 | $1.3M | +13.1% | #1,095 of 2,272 |
| 7Flathead County, MT | 48 | 69 | 15.6 | $1.3M | +10.1% | #1,192 of 2,272 |
| 8Fergus County, MT | 47 | 7 | 13.2 | $1.7M | +3.1% | #1,212 of 2,272 |
| 9Gallatin County, MT | 44 | 83 | 16.2 | $1.3M | +7.7% | #1,324 of 2,272 |
| 10Silver Bow County, MT | 43 | 22 | 14.3 | $1.3M | +2.6% | #1,360 of 2,272 |
| 16Custer County, MT | 21 | 17 | 33.7 | $645K | +1.5% | #2,066 of 2,272 |
Other business types in Custer County
Each with its Groundwork market score here, out of 100, where it has one.
Food and drink
Groceries and convenience
Auto
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many insurance agencies are in Custer County, MT?
Custer County has 17 insurance agencies on map listings as of September 2026. 2 of them (12%) are chain locations. The listings count insurance agencies. Official counts show 13 businesses with payroll classed as insurance agencies and brokerages in 2023.
How much do households in Custer County, MT spend on vehicle insurance?
About $11M a year, or $2,177 per household. That is 11% above the U.S. average (an index of 111, where 100 is the U.S. average). Spread across the 17 insurance agencies on map listings, it comes to $645K per agency. It is estimated from the incomes of the 5,038 households in Custer County and national spending patterns by income.
How does Custer County, MT compare with the U.S. for insurance agencies?
Custer County has 33.7 insurance agencies per 10,000 households, 2.2 times the U.S. rate of 15.6. Spending per agency is $645K, 49% below the U.S. figure of $1.3M. At the national ratio of insurance agencies to household spending, Custer County would have about 9, against 17 on map listings. There is one business with payroll in the industry for every 388 households, against one for every 966 across the U.S.
How fast is Custer County, MT growing?
Population estimates put Custer County at 12,034 people in 2025, up 1.5% since 2020, slower than the U.S. (+3.1%). It has 5,038 households. The median household income in Custer County is $70,605 a year, 13% below the U.S. median of $80,734. That rose 33.3% from the 2015–2019 survey, before inflation.
What is the Groundwork market score?
The Groundwork market score runs from 0 to 100 and compares a market with others of its kind for one business type: states with states, metro areas with metro areas, small-town markets and counties with their own. It weighs household spending per competitor (35%), households per business with payroll (25%), population growth (20%) and spending power (20%), each ranked against those peers. A higher score means that, taken together, the market has more household spending and more households for each business already there, faster population growth and more spending per household than similar markets. It describes a market, not any one site or deal. Custer County scores 21 for insurance agencies (low), #2,066 of 2,272 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Custer County. It maps the insurance agencies on map listings near the site and sizes the households and spending within the distance you choose. New accounts get 10 actions over 3 days, no card.
How the score works · Top markets for insurance agencies · All 56 business types in Custer County
Screening a site or an acquisition in Custer County?
A site report maps the competitors on map listings near an address and sizes the households and spending around it.
The button opens the report at the center of Custer County. Signed out, you see a blurred preview; on an account, each report is one action.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are estimates for research only. Not investment or real estate advice.