Real estate · County · Idaho
Real estate businesses in Custer County, ID
The real estate businesses in Custer County, ID, the household spending behind them and how the market ranks against other counties.
Groundwork market score
Not scored
Counties under 10,000 people aren’t scored, since a few businesses can swing their figures.
- Listings
- 4
- 0 chain locations (0%)
- Official establishments
- n/a
- Fewer than 3, or not published
- Household spending a year
- $29.8M
- On rent and homeowner costs · $15,351 a household
- Housing spending per listing (U.S. = 100)
- 172
- 72% above the U.S.
- Listings per 10k households
- 20.6
- 46% below the U.S.
- Population, 2025
- 4,636
- +8.6% since 2020
See the real estate businesses around any address in Custer County
The site report maps the real estate businesses 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
Map listings as of September 2026 show 4 real estate businesses in Custer County. That comes to 20.6 for every 10,000 households, 46% below the U.S. rate of 38.5.
Household spending on rent and homeowner costs in Custer County comes to about $29.8M a year: $15,351 per household, 8% below the U.S. average. Housing spending per office is 72% above the U.S. figure. That figure is all rent and homeowner costs, used as a measure of housing demand; it is not money real estate businesses take in.
There is no official count of businesses with payroll classed as real estate agents, property managers, mortgage lenders and inspectors in Custer County: counts under 3 aren’t published. Official counts list 25 one-person businesses without payroll.
Between 2020 and 2025, the population of Custer County grew 8.6%, faster than the U.S. (+3.1%). Counties under 10,000 people aren’t given a market score, since a few businesses can swing their figures.
How Custer County compares
The same measures for Idaho and the whole U.S. Housing spending per listing divides all rent and homeowner costs by the listings counted: a measure of housing demand for each business, not money any of them take in, so it is shown against the U.S. (100) only. Households per establishment divides households by the official count.
| Measure | Custer County | Idaho | U.S. |
|---|---|---|---|
| Listings per 10k households | 20.6 | 50.2 | 38.5 |
| Housing spending per listing (U.S. = 100) | 172 | 81 | 100 |
| Households per official establishment | n/a | 244 | 414 |
| Official establishment growth, 2019–2023 | n/a | +29.3% | +15.8% |
| Population growth, 2020–2025 | +8.6% | +9.8% | +3.1% |
| Spending per household on rent and homeowner costs | $15,351 | $17,677 | $16,661 |
| Median household income | $67,574 | $77,800 | $80,734 |
| Groundwork market score | Not scored | 37 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- n/a
- Employees, 2023
- n/a
- Annual payroll, 2023
- n/a
- One-person businesses, 2023
- 25Businesses with no payroll
- Map listings, September 2026
- 40 chain locations
- Listings at the U.S. rate for this spending
- 7The 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 real estate agents, property managers, mortgage lenders and inspectors 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
- 4,636+8.6% since 2020
- Households
- 1,943
- Median age
- 58.9
- Homes lived in by their owners
- 77%
- Vehicles per household
- 2.4
- Land area
- 4,922 sq. mi.
- People per square mile
- 1
- Median household income
- $67,574
- Average household income
- $70,154
- Median home value
- $381,700
- Jobs located here
- 1,434
- Daytime population
- 4,494Residents 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 real estate businesses 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 cardReal estate across Idaho
Every Idaho market ranked →The highest-scoring counties in Idaho for real estate businesses, numbered among those based in Idaho, with Custer County marked.
Top counties in Idaho
| Market | Score | Listings | Per 10k households | Housing spending per listing (U.S. = 100) | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Jerome County, ID | 81 | 14 | 16.9 | 233 | +8.6% | #17 of 2,229 |
| 2Minidoka County, ID | 80 | 10 | 12.3 | 309 | +5.7% | #22 of 2,229 |
| 3Bingham County, ID | 78 | 23 | 14.3 | 281 | +6.4% | #56 of 2,229 |
| 4Jefferson County, ID | 74 | 14 | 13.7 | 302 | +13.6% | #124 of 2,229 |
| 5Benewah County, ID | 74 | 6 | 14.7 | 250 | +9.7% | #130 of 2,229 |
| 6Franklin County, ID | 72 | 9 | 18.2 | 222 | +11.2% | #166 of 2,229 |
| 7Gem County, ID | 69 | 12 | 15.7 | 246 | +13.0% | #232 of 2,229 |
| 8Gooding County, ID | 69 | 13 | 22.8 | 162 | +5.1% | #250 of 2,229 |
| 9Washington County, ID | 60 | 11 | 26.2 | 136 | +9.7% | #582 of 2,229 |
| 10Canyon County, ID | 59 | 218 | 25.3 | 157 | +18.1% | #631 of 2,229 |
| Custer County, ID | Not scored | 4 | 20.6 | 172 | +8.6% |
Other business types in Custer County
None has a Groundwork market score here. Counties under 10,000 people aren’t scored, since a few businesses can swing their figures.
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 real estate businesses are in Custer County, ID?
There are 4 real estate businesses on map listings in Custer County as of September 2026. The listings count real estate agents and brokers, property managers, mortgage brokers and lenders, and home inspectors. No official count is published for real estate agents, property managers, mortgage lenders and inspectors in Custer County: counts under 3 are left out. Official counts also show 25 one-person businesses without payroll.
How much do households in Custer County, ID spend on rent and homeowner costs?
About $29.8M a year, or $15,351 per household. That is 8% below the U.S. average (an index of 92, where 100 is the U.S. average). For the 4 real estate businesses on map listings, housing spending per office is 72% above the U.S. figure. The spending figure is all rent and homeowner costs, a measure of housing demand, not money real estate businesses take in. It is estimated from the incomes of the 1,943 households in Custer County and national spending patterns by income.
How does Custer County, ID compare with the U.S. for real estate businesses?
Custer County has 20.6 real estate businesses per 10,000 households, 46% below the U.S. rate of 38.5. The index of housing spending per office is 172, where 100 is the U.S. At the national ratio of real estate businesses to household spending, Custer County would have about 7, against 4 on map listings.
How fast is Custer County, ID growing?
Population estimates put Custer County at 4,636 people in 2025, up 8.6% since 2020, faster than the U.S. (+3.1%). It has 1,943 households. The median household income in Custer County is $67,574 a year, 16% below the U.S. median of $80,734.
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. The score leaves out counties under 10,000 people, where a handful of businesses would swing it.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Custer County. It maps the real estate businesses 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 real estate businesses · 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.