Groceries and convenience · County · South Dakota
Convenience stores in Union County, SD
Competitor counts, household spending and official business counts for convenience stores in Union County, SD, set against other counties and the U.S.
Groundwork market score · out of 100
Score 47 out of 100: Lower middle
Ranked #1,251 of 2,261 scored counties
#12 of 16 scored counties in South Dakota
- Listings
- 14
- 9 chain locations (64%)
- Official establishments
- n/a
- Fewer than 3, or not published
- Household spending a year
- $46.9M
- On groceries · $6,412 a household
- Spending per listing
- $3.3M
- 58% below the U.S.
- Listings per 10k households
- 19.2
- 2.4 times the U.S.
- Population, 2025
- 17,402
- +3.3% since 2020
See the convenience stores around any address in Union County
The site report maps the convenience 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 Union 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
As of September 2026, map listings count 14 convenience stores in Union County. Chain locations make up 64% of them, against 60% across the U.S. Per 10,000 households, that is 19.2, 2.4 times the U.S. rate of 8.0.
Household spending on groceries in Union County comes to about $46.9M a year: $6,412 per household, in line with the U.S. average. That is about $3.3M of household spending for each store on map listings, 58% below the U.S. figure of $7.9M. That spending covers all groceries, which convenience stores share with other businesses in the trade.
There is no official count of businesses with payroll classed as convenience stores in Union County: counts under 3 aren’t published.
Between 2020 and 2025, the population of Union County grew 3.3%, in step with the U.S. (+3.1%). Union County scores 47 (lower middle) on the Groundwork market score for convenience stores, ranking #1,251 of 2,261 scored counties and #12 of 16 scored counties in South Dakota.
How Union County compares
The same measures for South Dakota and the whole U.S. Spending per listing divides a year of household spending on all groceries by the convenience 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 | Union County | South Dakota | U.S. |
|---|---|---|---|
| Listings per 10k households | 19.2 | 12.1 | 8.0 |
| Spending per listing | $3.3M | $5M | $7.9M |
| Households per official establishment | n/a | 11,077 | 3,493 |
| Official establishment growth, 2019–2023 | n/a | n/a | +22.0% |
| Population growth, 2020–2025 | +3.3% | +5.3% | +3.1% |
| Spending per household on groceries | $6,412 | $6,012 | $6,319 |
| Median household income | $89,636 | $75,081 | $80,734 |
| Groundwork market score | 47 | 48 |
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
- Not publishedNot published for this business type
- Map listings, September 2026
- 149 chain locations
- Listings at the U.S. rate for this spending
- 6The 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 convenience stores in Union 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 Union County
- Population, 2025 estimate
- 17,402+3.3% since 2020
- Households
- 7,310
- Median age
- 40.9
- Homes lived in by their owners
- 73%
- Vehicles per household
- 2.2
- Land area
- 462 sq. mi.
- People per square mile
- 37
- Median household income
- $89,636+27.4% vs. 2015–2019, before inflation
- Average household income
- $124,814
- Median home value
- $301,100
- Jobs located here
- 9,648
- Daytime population
- 19,509Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Union 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 convenience stores on map listings by name and distance.
Or open the report at the center of Union County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardConvenience stores across South Dakota
Every South Dakota market ranked →The highest-scoring counties in South Dakota for convenience stores, numbered among those based in South Dakota, with Union County marked.
Top counties in South Dakota
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Lincoln County, SD | 92 | 18 | 6.5 | $10.3M | +17.5% | #23 of 2,261 |
| 2Brookings County, SD | 74 | 11 | 8.0 | $7.4M | +9.6% | #328 of 2,261 |
| 3Lawrence County, SD | 68 | 11 | 9.1 | $6.4M | +14.0% | #499 of 2,261 |
| 4Minnehaha County, SD | 67 | 89 | 10.5 | $5.8M | +7.6% | #539 of 2,261 |
| 5Pennington County, SD | 66 | 60 | 12.9 | $4.6M | +6.6% | #568 of 2,261 |
| 6Yankton County, SD | 65 | 7 | 7.2 | $8.2M | +1.5% | #580 of 2,261 |
| 7Meade County, SD | 58 | 13 | 10.9 | $5.6M | +2.7% | #839 of 2,261 |
| 8Codington County, SD | 55 | 15 | 12.0 | $4.9M | +4.3% | #957 of 2,261 |
| 9Hughes County, SD | 53 | 7 | 9.7 | $6.3M | −0.9% | #1,018 of 2,261 |
| 10Davison County, SD | 50 | 8 | 9.0 | $6.4M | +0.6% | #1,121 of 2,261 |
| 12Union County, SD | 47 | 14 | 19.2 | $3.3M | +3.3% | #1,251 of 2,261 |
Other business types in Union County
Each with its Groundwork market score here, out of 100, where it has one.
Food and drink
Groceries and convenience
- Grocery and convenience stores59
- Grocery stores
- Convenience stores47
Auto
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many convenience stores are in Union County, SD?
Union County has 14 convenience stores on map listings as of September 2026. 9 of them (64%) are chain locations. The listings count convenience stores without fuel. No official count is published for convenience stores in Union County: counts under 3 are left out.
How much do households in Union County, SD spend on groceries?
About $46.9M a year, or $6,412 per household. That is in line with the U.S. average (an index of 101, where 100 is the U.S. average). Spread across the 14 convenience stores on map listings, it comes to $3.3M per store. The spending figure covers all groceries, not only convenience stores. It is estimated from the incomes of the 7,310 households in Union County and national spending patterns by income.
How does Union County, SD compare with the U.S. for convenience stores?
Union County has 19.2 convenience stores per 10,000 households, 2.4 times the U.S. rate of 8.0. Spending per store is $3.3M, 58% below the U.S. figure of $7.9M. At the national ratio of convenience stores to household spending, Union County would have about 6, against 14 on map listings.
How fast is Union County, SD growing?
Population estimates put Union County at 17,402 people in 2025, up 3.3% since 2020, in step with the U.S. (+3.1%). It has 7,310 households. Median household income in Union County is $89,636, 11% above the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 27.4%, 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. Union County scores 47 for convenience stores (lower middle), #1,251 of 2,261 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Union County. It maps the convenience 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 convenience stores · All 56 business types in Union County
Screening a site or an acquisition in Union 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 Union 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.