Groceries and convenience · County · Idaho
Grocery stores in Custer County, ID
Competitor counts, household spending and official business counts for grocery stores in Custer County, ID, set against other counties and the U.S.
Groundwork market score
Not scored
Counties under 10,000 people aren’t scored, since a few businesses can swing their figures.
- Listings
- 4
- 1 chain location (25%)
- Official establishments
- 3
- Businesses with payroll, 2023
- Household spending a year
- $10.4M
- On groceries · $5,349 a household
- Spending per listing
- $2.6M
- 72% below the U.S.
- Listings per 10k households
- 20.6
- 3 times the U.S.
- Population, 2025
- 4,636
- +8.6% since 2020
See the grocery stores around any address in Custer County
The site report maps the grocery stores 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
Households in Custer County spend about $10.4M a year on groceries, or $5,349 per household, 15% below the U.S. average. Spread across 4 grocery stores, that is $2.6M per store, 72% below the U.S. figure of $9.3M. The spending figure covers all groceries, not only grocery stores.
Custer County has 4 grocery stores on map listings as of September 2026. That comes to 20.6 for every 10,000 households, 3 times the U.S. rate of 6.8.
In 2023, official counts showed 3 businesses with payroll in Custer County classed as supermarkets and grocery stores. That is one for every 648 households, against one for every 2,053 across the U.S.
Population estimates put the population change in Custer County from 2020 to 2025 at +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. Spending per listing divides a year of household spending on all groceries by the grocery stores 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 | Idaho | U.S. |
|---|---|---|---|
| Listings per 10k households | 20.6 | 5.9 | 6.8 |
| Spending per listing | $2.6M | $10.1M | $9.3M |
| Households per official establishment | 648 | 2,565 | 2,053 |
| Official establishment growth, 2019–2023 | n/a | +7.8% | 0.0% |
| Population growth, 2020–2025 | +8.6% | +9.8% | +3.1% |
| Spending per household on groceries | $5,349 | $6,000 | $6,319 |
| Median household income | $67,574 | $77,800 | $80,734 |
| Groundwork market score | Not scored | 67 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 5 → 3
- Employees, 2023
- 56
- Annual payroll, 2023
- $1.2M
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 41 chain location
- Listings at the U.S. rate for this spending
- 1The 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 supermarkets and grocery stores 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 grocery stores 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 cardGrocery stores across Idaho
Every Idaho market ranked →The highest-scoring counties in Idaho for grocery stores, numbered among those based in Idaho, with Custer County marked.
Top counties in Idaho
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Ada County, ID | 91 | 77 | 3.8 | $16.8M | +9.6% | #45 of 2,070 |
| 2Bonneville County, ID | 86 | 15 | 3.4 | $17.8M | +8.9% | #91 of 2,070 |
| 3Canyon County, ID | 86 | 32 | 3.7 | $15.9M | +18.1% | #98 of 2,070 |
| 4Kootenai County, ID | 78 | 41 | 5.8 | $10.5M | +11.0% | #236 of 2,070 |
| 5Jerome County, ID | 68 | 5 | 6.0 | $9.7M | +8.6% | #465 of 2,070 |
| 6Bannock County, ID | 65 | 19 | 5.7 | $10.1M | +4.9% | #545 of 2,070 |
| 7Minidoka County, ID | 59 | 5 | 6.2 | $9.2M | +5.7% | #723 of 2,070 |
| 8Bonner County, ID | 58 | 14 | 6.9 | $8.4M | +14.8% | #759 of 2,070 |
| 9Bingham County, ID | 58 | 13 | 8.1 | $7.4M | +6.4% | #763 of 2,070 |
| 10Twin Falls County, ID | 54 | 23 | 6.6 | $8.7M | +7.9% | #887 of 2,070 |
| Custer County, ID | Not scored | 4 | 20.6 | $2.6M | +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
- Grocery and convenience stores
- Grocery stores
- Convenience stores
Auto
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many grocery stores are in Custer County, ID?
Map listings as of September 2026 show 4 grocery stores in Custer County. The listings count grocery stores and supermarkets. Official counts show 3 businesses with payroll classed as supermarkets and grocery stores in 2023.
How much do households in Custer County, ID spend on groceries?
About $10.4M a year, or $5,349 per household. That is 15% below the U.S. average (an index of 85, where 100 is the U.S. average). Spread across the 4 grocery stores on map listings, it comes to $2.6M per store. That spending covers all groceries, which grocery stores share with other businesses in the trade. 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 grocery stores?
Custer County has 20.6 grocery stores per 10,000 households, 3 times the U.S. rate of 6.8. Spending per store is $2.6M, 72% below the U.S. figure of $9.3M. At the U.S. ratio of grocery stores to household spending, Custer County would have about 1, against 4 on map listings. There is one business with payroll in the industry for every 648 households, against one for every 2,053 across the U.S.
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 grocery stores 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 grocery stores · 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.