Real estate · County · South Dakota
Real estate agents and brokers in Union County, SD
The real estate agents and brokers in Union County, SD, the household spending behind them and how the market ranks against other counties.
Groundwork market score · out of 100
Score 51 out of 100: Upper middle
Ranked #995 of 2,176 scored counties
#1 of 17 scored counties in South Dakota
- Listings
- 14
- 0 chain locations (0%)
- Official establishments
- 8
- Businesses with payroll, 2023
- Household spending a year
- $110.9M
- On rent and homeowner costs · $15,168 a household
- Housing spending per listing (U.S. = 100)
- 145
- 45% above the U.S.
- Listings per 10k households
- 19.2
- 37% below the U.S.
- Population, 2025
- 17,402
- +3.3% since 2020
See the real estate agents and brokers around any address in Union County
The site report maps the real estate agents and brokers 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
Households in Union County spend about $110.9M a year on rent and homeowner costs, or $15,168 per household, 9% below the U.S. average. Housing spending per office is 45% above the U.S. figure. The spending figure is all rent and homeowner costs, a measure of housing demand, not money real estate agents and brokers take in.
There are 14 real estate agents and brokers on map listings in Union County as of September 2026. None of them are chain locations, against 4% across the U.S. That comes to 19.2 for every 10,000 households, 37% below the U.S. rate of 30.6.
The official count of businesses with payroll classed as offices of real estate agents and brokers in Union County was 8 in 2023. That is one for every 914 households, against one for every 788 across the U.S.
Between 2020 and 2025, the population of Union County grew 3.3%, in step with the U.S. (+3.1%). Union County scores 51 (upper middle) on the Groundwork market score for real estate agents and brokers, ranking #995 of 2,176 scored counties and #1 of 17 scored counties in South Dakota.
How Union County compares
The same measures for South Dakota 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 | Union County | South Dakota | U.S. |
|---|---|---|---|
| Listings per 10k households | 19.2 | 26.5 | 30.6 |
| Housing spending per listing (U.S. = 100) | 145 | 96 | 100 |
| Households per official establishment | 914 | 802 | 788 |
| Official establishment growth, 2019–2023 | n/a | +36.1% | +20.1% |
| Population growth, 2020–2025 | +3.3% | +5.3% | +3.1% |
| Spending per household on rent and homeowner costs | $15,168 | $13,945 | $16,661 |
| Median household income | $89,636 | $75,081 | $80,734 |
| Groundwork market score | 51 | 38 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 8 → 8
- Employees, 2023
- 12
- Annual payroll, 2023
- $545K
- One-person businesses, 2023
- Not publishedNot published for this business type
- Map listings, September 2026
- 140 chain locations
- Listings at the U.S. rate for this spending
- 20The 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 offices of real estate agents and brokers 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 real estate agents and brokers 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 cardReal estate agents and brokers across South Dakota
Every South Dakota market ranked →The highest-scoring counties in South Dakota for real estate agents and brokers, numbered among those based in South Dakota, with Union County marked.
Top counties in South Dakota
| Market | Score | Listings | Per 10k households | Housing spending per listing (U.S. = 100) | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Union County, SD | 51 | 14 | 19.2 | 145 | +3.3% | #995 of 2,176 |
| 2Minnehaha County, SD | 51 | 170 | 20.0 | 130 | +7.6% | #1,002 of 2,176 |
| 3Yankton County, SD | 49 | 16 | 16.5 | 152 | +1.5% | #1,089 of 2,176 |
| 4Roberts County, SD | 44 | 5 | 13.8 | 176 | −0.1% | #1,360 of 2,176 |
| 5Meade County, SD | 44 | 20 | 16.7 | 154 | +2.7% | #1,367 of 2,176 |
| 6Brookings County, SD | 43 | 33 | 23.9 | 104 | +9.6% | #1,432 of 2,176 |
| 7Beadle County, SD | 42 | 13 | 17.3 | 141 | +2.4% | #1,461 of 2,176 |
| 8Butte County, SD | 41 | 10 | 23.2 | 110 | +5.5% | #1,523 of 2,176 |
| 9Davison County, SD | 40 | 18 | 20.2 | 120 | +0.6% | #1,581 of 2,176 |
| 10Hughes County, SD | 40 | 18 | 24.8 | 105 | −0.9% | #1,591 of 2,176 |
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
- Real estate52
- Real estate agents and brokers51
- Property management
- Mortgage brokers and lenders
- Home inspectors
Funeral services
Questions
How many real estate agents and brokers are in Union County, SD?
As of September 2026, map listings count 14 real estate agents and brokers in Union County. None of them are chain locations. The listings count real estate agents and brokerages, commercial brokers included. Official counts show 8 businesses with payroll classed as offices of real estate agents and brokers in 2023.
How much do households in Union County, SD spend on rent and homeowner costs?
About $110.9M a year, or $15,168 per household. That is 9% below the U.S. average (an index of 91, where 100 is the U.S. average). For the 14 real estate agents and brokers on map listings, housing spending per office is 45% 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 agents and brokers take in. 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 real estate agents and brokers?
Union County has 19.2 real estate agents and brokers per 10,000 households, 37% below the U.S. rate of 30.6. The index of housing spending per office is 145, where 100 is the U.S. At the U.S. ratio of real estate agents and brokers to household spending, Union County would have about 20, against 14 on map listings. There is one business with payroll in the industry for every 914 households, against one for every 788 across the U.S.
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 51 for real estate agents and brokers (upper middle), #995 of 2,176 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 real estate agents and brokers 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 agents and brokers · 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.