Fitness and classes · County · South Dakota
Gyms in Union County, SD
How Union County, SD compares with other counties and the U.S. for gyms: competitors, household spending, official counts and growth.
Groundwork market score · out of 100
Score 64 out of 100: Upper middle
Ranked #407 of 1,792 scored counties
#1 of 13 scored counties in South Dakota
- Listings
- 7
- 2 chain locations (29%)
- Official establishments
- n/a
- Fewer than 3, or not published
- Household spending a year
- $7.8M
- On memberships, classes and admissions · $1,071 a household
- Spending per listing
- $1.1M
- 14% below the U.S.
- Listings per 10k households
- 9.6
- 26% above the U.S.
- Population, 2025
- 17,402
- +3.3% since 2020
See the gyms around any address in Union County
The site report maps the gyms 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
Household spending on memberships, classes and admissions in Union County comes to about $7.8M a year: $1,071 per household, 9% above the U.S. average. That is about $1.1M of household spending for each gym on map listings, 14% below the U.S. figure of $1.3M. The spending figure covers all memberships, classes and admissions, not only gyms.
Union County has 7 gyms on map listings as of September 2026. Chain locations make up 29% of them, against 28% across the U.S. Per 10,000 households, that is 9.6, 26% above the U.S. rate of 7.6.
Official counts don’t publish a figure for fitness and recreational sports centers in Union County, since they leave out counts under 3.
Between 2020 and 2025, the population of Union County grew 3.3%, in step with the U.S. (+3.1%). Union County scores 64 (upper middle) on the Groundwork market score for gyms, ranking #407 of 1,792 scored counties and #1 of 13 scored counties in South Dakota. That puts it in the top quarter of counties.
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 memberships, classes and admissions by the gyms 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 | 9.6 | 8.7 | 7.6 |
| Spending per listing | $1.1M | $1M | $1.3M |
| Households per official establishment (all fitness and recreational sports centers) | n/a | 3,207 | 3,109 |
| Official establishment growth, 2019–2023 | n/a | −5.0% | +5.8% |
| Population growth, 2020–2025 | +3.3% | +5.3% | +3.1% |
| Spending per household on memberships, classes and admissions | $1,071 | $876 | $983 |
| Median household income | $89,636 | $75,081 | $80,734 |
| Groundwork market score | 64 | 44 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- n/aAll fitness and recreational sports centers
- Employees, 2023
- n/a
- Annual payroll, 2023
- n/a
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 72 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 fitness and recreational sports centers 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. These official figures cover all fitness and recreational sports centers, not only gyms.
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 gyms 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 cardGyms across South Dakota
Every South Dakota market ranked →The highest-scoring counties in South Dakota for gyms, 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 |
|---|---|---|---|---|---|---|
| 1Union County, SD | 64 | 7 | 9.6 | $1.1M | +3.3% | #407 of 1,792 |
| 2Pennington County, SD | 59 | 38 | 8.2 | $1.1M | +6.6% | #584 of 1,792 |
| 3Brookings County, SD | 56 | 10 | 7.2 | $1.1M | +9.6% | #695 of 1,792 |
| 4Yankton County, SD | 55 | 6 | 6.2 | $1.3M | +1.5% | #722 of 1,792 |
| 5Meade County, SD | 53 | 10 | 8.4 | $1M | +2.7% | #817 of 1,792 |
| 6Minnehaha County, SD | 49 | 77 | 9.1 | $1M | +7.6% | #965 of 1,792 |
| 7Lincoln County, SD | 48 | 36 | 12.9 | $877K | +17.5% | #1,006 of 1,792 |
| 8Butte County, SD | 46 | 5 | 11.6 | $766K | +5.5% | #1,080 of 1,792 |
| 9Lawrence County, SD | 45 | 14 | 11.6 | $715K | +14.0% | #1,117 of 1,792 |
| 10Codington County, SD | 37 | 12 | 9.6 | $807K | +4.3% | #1,334 of 1,792 |
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
Auto
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many gyms are in Union County, SD?
Map listings as of September 2026 show 7 gyms in Union County. 2 of them (29%) are chain locations. The listings count gyms and fitness centers. No official count is published for fitness and recreational sports centers in Union County: counts under 3 are left out.
How much do households in Union County, SD spend on memberships, classes and admissions?
About $7.8M a year, or $1,071 per household. That is 9% above the U.S. average (an index of 109, where 100 is the U.S. average). Spread across the 7 gyms on map listings, it comes to $1.1M per gym. That spending covers all memberships, classes and admissions, which gyms share with other businesses in the trade. 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 gyms?
Union County has 9.6 gyms per 10,000 households, 26% above the U.S. rate of 7.6. Spending per gym is $1.1M, 14% below the U.S. figure of $1.3M. At the U.S. ratio of gyms to household spending, Union County would have about 6, against 7 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 64 for gyms (upper middle), #407 of 1,792 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 gyms 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 gyms · 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.