Overview
Minnehaha County is home to 200,689 people, making it the most populous county in South Dakota (Census ACS 5-Year, 2023). It's larger than roughly 89% of all U.S. counties by population. Sioux Falls, the state's largest city, sits at its center.
The county is young. Median age is 35.7 years (Census ACS 5-Year, 2023), lower than about 90% of U.S. counties. It's also one of the tightest housing markets in the country, with a vacancy rate of 5.3% (Census ACS 5-Year, 2023), lower than 95% of counties nationally.
Commutes are short. The average is 16.2 minutes (Census ACS 5-Year, 2023), shorter than about 91% of U.S. counties. That number reflects a compact metro area where most workers live close to their jobs.
Demographics
Minnehaha County skews younger than most of the country and most of South Dakota. At 35.7 years, the median age falls below roughly 90% of U.S. counties (Census ACS 5-Year, 2023). A younger workforce tends to follow job growth, and the county's employment numbers suggest that's happening here.
Education levels run high. About 34.6% of adults hold a bachelor's degree or higher (Census ACS 5-Year, 2023), placing the county above 86% of U.S. counties and 89% of South Dakota counties. That's a deep pool of credentialed workers for a metro area its size.
The population is 79.1% white, 6.5% Black, 6.4% Hispanic, 1.8% Asian, and 1.8% Native American (Census ACS 5-Year, 2023). The county is more racially diverse than most of South Dakota. Its Black population ranks higher than 98% of counties in the state, and its Hispanic population higher than 92%.
Education
Minnehaha County's public schools enrolled 33,995 students (Education Data Portal, 2021). That's among the largest enrollment figures in the state, ranking higher than 98% of South Dakota counties.
Per-pupil spending was $12,996 (Education Data Portal, 2020), about $2,000 below the national average of roughly $15,000. The student-teacher ratio sits at 15.4 to 1 (Education Data Portal, 2021), close to the national average of 15.5 to 1. Class sizes aren't unusual, but the spending gap is real.
The graduation rate was 84.9% (Education Data Portal, 2019), roughly two points below the national average of 87%. That's a middling result for South Dakota, ranking near the 52nd mark among the state's counties. For a county with above-average college attainment, the K-12 outcomes are a mixed picture. High-performing graduates may be supplemented by college-educated workers moving in from elsewhere.
Economy & Employment
Unemployment in Minnehaha County is 2.4% (BLS LAUS, 2025). That's lower than about 95% of U.S. counties. The labor force is 119,536, with 116,675 employed and 2,861 unemployed (BLS LAUS, 2025). The county accounts for a dominant share of South Dakota's total employment.
Median household income is $76,074 (Census ACS 5-Year, 2023), higher than 79% of U.S. counties and 80% of South Dakota counties. Per capita income runs $41,644 (Census ACS 5-Year, 2023), placing the county above 83% nationally.
IRS data tells a similar story. The average adjusted gross income per return was $94,604, and average total income was $95,437 (IRS Statistics of Income, 2021). There were 104,470 tax returns filed, with total AGI of $9.9 billion (IRS Statistics of Income, 2021).
The poverty rate is 8.6% (Census ACS 5-Year, 2023), lower than roughly 83% of U.S. counties. Low unemployment, above-average income, and low poverty all point in the same direction: Minnehaha County's labor market is tight, and most residents are working.
Housing & Cost of Living
Median home value in Minnehaha County is $266,600 (Census ACS 5-Year, 2023), higher than 79% of U.S. counties and 89% of counties in South Dakota. Median gross rent is $954 per month (Census ACS 5-Year, 2023).
The county has 87,043 total housing units, of which 4,649 are vacant (Census ACS 5-Year, 2023). That 5.3% vacancy rate ranks lower than 95% of U.S. counties. Supply is thin.
HUD Fair Market Rents for 2026 show the cost of that tightness:
- Efficiency: $865
- One-bedroom: $986
- Two-bedroom: $1,156
- Three-bedroom: $1,586
- Four-bedroom: $1,939
(HUD Fair Market Rents, 2026)
Those rents rank above 70% to 81% of U.S. counties depending on unit size, and above roughly 86% to 92% of South Dakota counties. For a state associated with low cost of living, Minnehaha County is notably more expensive. A household earning the median income of $76,074 can handle a two-bedroom at $1,156 per month without crossing the 30% affordability threshold. But households earning below the median face tighter math, especially in a market where only 5.3% of units sit empty.
Health & Wellness
Obesity affects 37.1% of adults (CDC PLACES, 2023), above the national median but ranking near the middle for South Dakota counties. Diabetes prevalence is 10% (CDC PLACES, 2023). High blood pressure affects 30.5% of adults (CDC PLACES, 2023), lower than about 72% of U.S. counties.
Mental health stands out. Depression prevalence is 22.3% (CDC PLACES, 2023), and 16% of adults report frequent poor mental health days (CDC PLACES, 2023). That poor mental health figure is higher than 90% of U.S. counties. Cold, long winters and a young population both correlate with higher reported mental health burden, and the data here is consistent with that.
Poor physical health days affect 10.7% of adults (CDC PLACES, 2023), a rate higher than 97% of U.S. counties. That's a notable outlier.
On the preventive care side, 76% of adults had an annual checkup (CDC PLACES, 2023), and 84.4% had cholesterol screening (CDC PLACES, 2023), both above the middle of the pack nationally. About 8.9% of residents lack health insurance (CDC PLACES, 2023), lower than roughly 71% of U.S. counties.
Climate & Natural Disasters
Minnehaha County runs cold. The average temperature is 48.3°F (NOAA Climate Data Online, 2025), with highs averaging 59.6°F and lows dropping to 36.9°F. That's colder than 75% of U.S. counties, which means most of the country is warmer year-round.
Precipitation is modest. The county gets 23.4 inches of rain annually (NOAA, 2025), well below the national median. Snow tells a different story: 31.7 inches per year puts it above 75% of U.S. counties. Winters here are real.
The FEMA record goes back to 1969 and shows 17 declared disasters (FEMA OpenFEMA, 2026). That's fewer than 68% of U.S. counties, meaning most have seen more federal disaster declarations. The pattern skews heavily toward severe storms and flooding. Floods account for five of those declarations; severe storms, seven more. The most recent was a flood declaration in August 2024.
Three declarations stand out as outliers: two biological emergency declarations in early 2020 (COVID-19) and a coastal storm emergency in 2005, which is unusual geography for a landlocked South Dakota county. That 2005 declaration likely reflects federal emergency coordination rather than a local weather event.
The practical takeaway is that storm and flood risk are the recurring concerns. Four of the last six declarations involved one or the other. Buyers in low-lying areas should check flood zone maps carefully, and the 2024 flood declaration is recent enough to affect insurance availability and pricing.
Financial Profile
IRS data shows 104,470 tax returns filed in Minnehaha County, generating total adjusted gross income of $9.9 billion and total income of $10 billion (IRS Statistics of Income, 2021). Average AGI per return was $94,604, higher than 92% of U.S. counties (IRS Statistics of Income, 2021). This is the wealthiest county in South Dakota by aggregate income.
Banking access is extensive. The FDIC reports 4,597 bank branches with $1.4 trillion in total deposits (FDIC Summary of Deposits, 2023). These figures likely reflect Minnehaha County's role as a banking hub. South Dakota's favorable banking regulations have attracted national credit card operations and financial services companies to the Sioux Falls area, inflating deposit totals well beyond what a county of 200,000 would typically hold.
Social Security benefits reach 40,680 residents (SSA OASDI, 2024), ranking above 88% of U.S. counties and 98% of South Dakota counties. With a median age of 35.7, beneficiaries make up about 20% of the population, a smaller share than most counties, consistent with its younger demographic profile.
Key Comparisons
Minnehaha County outperforms most U.S. counties on economic measures. Median household income ($76,074) ranks in the top 21% nationally. Unemployment (2.4%) sits in the bottom 5%. Poverty (8.6%) falls in the bottom 17%. These three indicators together paint a consistent picture of a county where work is available and pays above average.
Within South Dakota, the county leads on population, employment, income, and housing stock. It ranks first or second among the state's 66 counties on nearly every economic metric.
Housing costs are the tradeoff. Home values and rents both rank higher than 79% or more of U.S. counties, and the vacancy rate (5.3%) is among the tightest in the country. For a state where affordability is a selling point, Minnehaha County is the exception.
Health outcomes are mixed. Insurance coverage is better than most counties, and preventive care utilization is above average. But rates of poor physical health, poor mental health, and depression all rank high nationally. The county's young population doesn't translate to better self-reported health.
Education spending ($12,996 per pupil) trails the national average by about $2,000, and the graduation rate (84.9%) sits just below the national mark. Workforce education attainment is strong, but that may owe more to in-migration than to local K-12 outcomes.
Data Sources
- Census ACS 5-Year, 2023: Population, income, housing, demographics, education attainment, commute times, poverty rate
- BLS LAUS, 2025: Unemployment rate, labor force, employment counts
- CDC PLACES, 2023: Health metrics including obesity, diabetes, mental health, insurance coverage, preventive care
- HUD Fair Market Rents, 2026: Fair market rent by bedroom count
- FEMA OpenFEMA, 2026: Disaster declarations and history
- IRS Statistics of Income, 2021: Tax returns, adjusted gross income, total income
- FDIC Summary of Deposits, 2023: Bank branch counts and total deposits
- NOAA Climate Data Online, 2025: Temperature and precipitation averages
- SSA OASDI, 2024: Social Security beneficiary counts
- USDA Census of Agriculture, 2022: Data not available for Minnehaha County
- Education Data Portal, 2021: Per-pupil spending, enrollment, student-teacher ratio, graduation rate