County profile · South Dakota
Lake County, SD market data
How Lake County compares with other counties for 56 business types: competitors, household spending, official counts and growth.
- Population, 2025
- 10,993
- −0.2% since 2020
- Households
- 4,716
- Median household income
- $76,808
- +24.2% vs. 2015–2019, before inflation
- Median home value
- $247,600
- Jobs located here
- 5,183
- Highest market score
- 73
- Salons, barbers and spas, #203 of 2,385 scored counties
A site report maps the competitors on map listings around any address in Lake County by name and distance, and the households and spending within reach. Or open the report at the center of Lake 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
Lake County has an estimated 10,993 people and 4,716 households. Population estimates put the population change in Lake County from 2020 to 2025 at −0.2%, against +3.1% for the U.S. Median household income in Lake County is $76,808, 5% below the U.S. median of $80,734. Against the 2015–2019 survey, the median rose 24.2%, before inflation.
Relative to the U.S., household spending in Lake County runs highest on vehicle maintenance and repairs (an index of 135, where 100 is the U.S. average) and lowest on child care and other personal services (70).
Of the business types scored in Lake County, salons, barbers and spas (73); auto repair and car care businesses (73); and medical and dental practices (71) have the highest Groundwork market scores. For salons, barbers and spas, that ranks #203 of 2,385 scored counties.
Against the U.S., map listings per household run highest for pet businesses (2.4 times the U.S. rate) and lowest for medical and dental practices (60% below the U.S. rate).
All 56 business types in Lake County
Highest Groundwork market score first. Each score compares Lake County with other counties for that business type, from 0 to 100. Spending per listing divides a whole spending line (all vehicle repairs, all eating out) by one type’s listings: the demand for each competitor, not a business’s revenue. Compare it across markets with its index, where 100 is the U.S. figure for the same type; the real estate types, whose line is all housing costs, show the index only. How the score works.
| Business type | Score | Rank among counties | Listings | Per 10k households | Spending per listing | Spending per listing vs. U.S. (100) | Official establishments |
|---|---|---|---|---|---|---|---|
| Salons, barbers and spas | 73 | #203 of 2,385 | 10 | 21.2 | $468K | 220 | Under 3 |
| Auto repair and car care | 73 | #284 of 2,401 | 20 | 42.4 | $304K | 113 | 4 |
| Doctors, dentists and clinics | 71 | #303 of 2,394 | 16 | 33.9 | $413K | 271 | 9 |
| Auto repair shops | 68 | #436 of 2,378 | 13 | 27.6 | $468K | 105 | 3 |
| Fast food and sandwich shops | 66 | #530 of 2,222 | 6 | 12.7 | $3.1M | 100 | 5 |
| Hair salons | 62 | #590 of 2,339 | 9 | 19.1 | $520K | 121 | Under 3 |
| Clothing and shoe stores | 61 | #640 of 2,087 | 5 | 10.6 | $1.9M | 147 | Under 3 |
| Clothing, shoes and laundry | 60 | #712 of 2,210 | 7 | 14.8 | $1.3M | 151 | Under 3 |
| Gas stations | 53 | #1,043 of 2,358 | 9 | 19.1 | $1.7M | 72 | 5 |
| Dentists and orthodontists | 49 | #963 of 1,886 | 5 | 10.6 | $1.3M | 134 | 5 |
| Grocery and convenience stores | 49 | #1,252 of 2,402 | 11 | 23.3 | $2.6M | 77 | Under 3 |
| Restaurants and cafes | 47 | #1,314 of 2,405 | 49 | 103.9 | $374K | 101 | 20 |
| Sit-down restaurants | 46 | #1,348 of 2,405 | 23 | 48.8 | $798K | 120 | 12 |
| Home repair trades | 44 | #1,340 of 2,057 | 8 | 17.0 | $1.6M | 66 | 5 |
| Convenience stores | 43 | #1,377 of 2,261 | 6 | 12.7 | $4.8M | 60 | Under 3 |
| Coffee shops and cafes | 39 | #1,438 of 2,063 | 6 | 12.7 | $3.1M | 83 | 3 |
| Real estate | 38 | #1,726 of 2,229 | 12 | 25.4 | Index only | 128 | Under 3 |
| Real estate agents and brokers | 34 | #1,890 of 2,176 | 11 | 23.3 | Index only | 111 | Under 3 |
| Pet businesses | 26 | #1,995 of 2,200 | 12 | 25.4 | $333K | 38 | Under 3 |
| HVAC and plumbing | 23 | #1,619 of 1,707 | 6 | 12.7 | $2.2M | 45 | Under 3 |
| Insurance agencies | 17 | #2,145 of 2,272 | 13 | 27.6 | $717K | 57 | 11 |
| Child care and preschools | Not scored | Not scored | 4 | 8.5 | $478K | 48 | Under 3 |
| Chiropractors | Not scored | Not scored | 4 | 8.5 | $1.7M | 69 | 4 |
| Gyms, studios and classes | Not scored | Not scored | 4 | 8.5 | $1.1M | 161 | Under 3 |
| Bakeries and dessert shops | Not scored | Not scored | 3 | 6.4 | $6.1M | 148 | 3 |
| Funeral homes | Not scored | Not scored | 3 | 6.4 | $269K | 40 | Under 3 |
| Gyms | Not scored | Not scored | 3 | 6.4 | $1.4M | 109 | Under 3 |
| Lawn, cleaning and pest control | Not scored | Not scored | 3 | 6.4 | $1.9M | 116 | 3 |
| Pet stores | Not scored | Not scored | 3 | 6.4 | $1.3M | 29 | Under 3 |
| Pizza | Not scored | Not scored | 3 | 6.4 | $6.1M | 120 | 5 |
| Veterinarians | Not scored | Not scored | 3 | 6.4 | $1.3M | 49 | Under 3 |
| Car washes and detailing | Not scored | Not scored | 2 | 4.2 | $3M | Too few | Under 3 |
| Collision repair and body shops | Not scored | Not scored | 2 | 4.2 | $3M | Too few | Under 3 |
| Electricians | Not scored | Not scored | 2 | 4.2 | $6.5M | Too few | 5 |
| Landscaping and lawn care | Not scored | Not scored | 2 | 4.2 | $2.9M | Too few | 3 |
| Optometrists and eye care | Not scored | Not scored | 2 | 4.2 | $3.3M | Too few | Under 3 |
| Pet grooming and boarding | Not scored | Not scored | 2 | 4.2 | $2M | Too few | Under 3 |
| Grocery stores | Not scored | Not scored | 1 | 2.1 | $28.5M | Too few | Under 3 |
| Home inspectors | Not scored | Not scored | 1 | 2.1 | Index only | Too few | Under 3 |
| Laundromats | Not scored | Not scored | 1 | 2.1 | $9.3M | Too few | Under 3 |
| Martial arts and dance studios | Not scored | Not scored | 1 | 2.1 | $4.3M | Too few | Under 3 |
| Pest control | Not scored | Not scored | 1 | 2.1 | $5.8M | Too few | Under 3 |
| Physical therapy | Not scored | Not scored | 1 | 2.1 | $6.6M | Too few | Under 3 |
| Spas and skin care | Not scored | Not scored | 1 | 2.1 | $4.7M | Too few | Under 3 |
| Barbershops | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Dry cleaners | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| House cleaning | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Mortgage brokers and lenders | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Nail salons | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Oil change and quick lube | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Primary care and pediatrics | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Property management | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Roofing and gutters | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Tire shops | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Urgent care and walk-in clinics | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Yoga, Pilates and fitness studios | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
Household spending in Lake County
What households here spend in a year on each line, in total and per household, with the index against the U.S. average (100).
| Spending line | A year, all households | Per household | Index vs. U.S. (100) |
|---|---|---|---|
| Vehicle maintenance and repairs | $6.1M | $1,289 | 135 |
| Gasoline and other fuels | $15.4M | $3,256 | 125 |
| Food away from home | $18.3M | $3,890 | 96 |
| Groceries | $28.5M | $6,049 | 96 |
| Personal care products and services | $4.7M | $993 | 99 |
| Child care and other personal services | $1.9M | $405 | 70 |
| Memberships, classes and admissions | $4.3M | $906 | 92 |
| Medical and dental services | $6.6M | $1,402 | 109 |
| Pets | $4M | $847 | 93 |
| Clothing, shoes and related services | $9.3M | $1,976 | 96 |
| Vehicle insurance | $9.3M | $1,977 | 101 |
| Home repairs, maintenance and insurance | $12.9M | $2,736 | 91 |
| Lawn care, cleaning and other household services | $5.8M | $1,235 | 87 |
| Rent and homeowner costs | $66.5M | $14,093 | 85 |
Household spending is estimated from the incomes of the households in each neighborhood, using what households at each income spent nationally in 2024, adjusted for the region. It counts what residents spend, wherever they spend it.
Population and households in Lake County
- Population, 2025 estimate
- 10,993−0.2% since 2020
- Households
- 4,716
- Median age
- 44.3
- Homes lived in by their owners
- 74%
- Vehicles per household
- 2.3
- Land area
- 563 sq. mi.
- People per square mile
- 19
- Median household income
- $76,808+24.2% vs. 2015–2019, before inflation
- Average household income
- $104,754
- Median home value
- $247,600
- Jobs located here
- 5,183
- Daytime population
- 10,346Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Lake 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 competitors on map listings by name and distance, for any of the 56 business types.
Or open the report at the center of Lake County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardRelated markets
Nearest counties in South Dakota 8
- Moody County, SD6,397 people
- Miner County, SD2,300 people
- Brookings County, SD35,353 people
- McCook County, SD5,751 people
- Kingsbury County, SD5,244 people
- Minnehaha County, SD203,289 people
- Hanson County, SD3,472 people
- Lincoln County, SD70,638 people
Questions
How fast is Lake County, SD growing?
Population estimates put Lake County at 10,993 people in 2025, down 0.2% since 2020, against +3.1% for the U.S. It has 4,716 households. Median household income rose 24.2% from the 2015–2019 survey, before inflation.
How much do households in Lake County, SD spend?
Households in Lake County spend about $66.5M a year on rent and homeowner costs, $28.5M on groceries and $18.3M on food away from home. Set against the U.S., households in Lake County spend the most on vehicle maintenance and repairs (an index of 135, where 100 is the U.S. average) and the least on child care and other personal services (70).
Which business types have the highest market scores in Lake County, SD?
The highest Groundwork market scores in Lake County are for salons, barbers and spas (73); auto repair and car care businesses (73); and medical and dental practices (71). Lake County ranks #203 of 2,385 scored counties for salons, barbers and spas.
How does Lake County, SD compare with the U.S.?
The median household income in Lake County is $76,808 a year, 5% below the U.S. median of $80,734. The population fell 0.2% from 2020 to 2025, against +3.1% for the U.S. The median home value is $247,600, against $332,700 for the U.S. For its number of households, Lake County has the most map listings, relative to the U.S., for pet businesses (2.4 times the U.S. rate) and the fewest for medical and dental practices (60% below the U.S. rate).
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. 21 of the 56 business types have a score in Lake County, each ranked against other counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Lake County. It maps the competitors 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.
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Screening a site or an acquisition in Lake 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 Lake 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.