Hamlin County, South Dakota Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 28th-largest in South Dakota
The population of Hamlin County, South Dakota is 6,288 as of the 2023 American Community Survey, making it the 28th-largest county in South Dakota. The median household income is $83,194, the median home value is $207,700, and the median age is 32.5.
The population of Hamlin County has grown 11.5% since 2010 (5,915 → 6,596), a +0.78% annualized rate.
6,288
Population
+0.78%
Annual growth
12
People / sq mi
$83,194
Median Income
$207,700
Median Home Value
Hamlin County covers 507 sq mi of land at 12.4 people per square mile.
About Hamlin County, SD
Hamlin County is a county in South Dakota with a population of 6,288. It ranks #28 among counties in South Dakota by population. The median age is 32.5, younger than the national median. The population is 51.4% male and 48.6% female.
The median household income in Hamlin County is $83,194, above the US median of $74,580. 4.2% of residents live below the federal poverty level. Home values sit at a median of $207,700, with monthly rent averaging $769. The homeownership rate of 81.5% is higher than the national rate of 64.8%.
Educational attainment in Hamlin County reflects 24.4% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.6% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 21.8 minutes each way.
Hamlin County Population History (2010-2024)
The county of Hamlin County had a population of 5,915 in 2010 and 6,596 in 2024, a 11.5% growth over 14 years. The peak was 6,596 in 2024. Average annual growth rate: 0.79%.
6,596
Population (2024)
5,915
Population (2010)
6,596
Peak (2024)
0.79%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 5,915 |
| 2011 | 5,964 |
| 2012 | 5,946 |
| 2013 | 5,927 |
| 2014 | 5,952 |
| 2015 | 5,977 |
| 2016 | 5,916 |
| 2017 | 6,032 |
| 2018 | 6,113 |
| 2019 | 6,224 |
| 2020 | 6,161 |
| 2021 | 6,261 |
| 2022 | 6,395 |
| 2023 | 6,450 |
| 2024 | 6,596 |
Race & Ethnicity
| White | 92.8% |
| Black or African American | 0.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.8% |
| Two or More Races | 0.0% |
Age & Sex
32.5
Median Age
48.6%
Female
51.4%
Male
14.2%
Age 65+
Age Distribution
Children (under 15): 27.8% · Seniors (65+): 14.2%
Income & Poverty
| Median household income | $83,194+$10,773 vs state |
| Mean household income | $101,165 |
| Per-capita income | $35,757 |
| Poverty rate | 4.2%-3.2% vs state |
| Unemployment rate | 1.2% |
| Employment-to-population | 67.0% |
Top Industries by Employment
The largest employment sector in Hamlin County is professional & business services, accounting for 21.2% of workers.
How residents commute
0.0%
Drive alone
6.0%
Carpool
74.0%
Public transit
7.6%
Work from home
21.8 min
Avg commute
Housing
$207,700$-29,100 vs state
Median home value
$769
Median rent
81.5%
Homeownership rate
2,831
Total housing units
77.0%
Occupied
23.0%
Vacant
18.5%
Renter-occupied
Social & access
90.1%
With health insurance
95.8%
With broadband internet
23.9%
Foreign-born
6.7%
Veterans (18+)
7.4%
With a disability
93.9%
Speak language other than English at home
Education
92.6%
High School+
24.4%
Bachelor's+
Largest cities in South Dakota
Other counties in South Dakota
Part of South Dakota
Metro areas in South Dakota
County rankings
Frequently Asked Questions
Hamlin County, South Dakota has a population of 6,288 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 28th-largest county in South Dakota. Population density is 12 people per square mile.
The population of Hamlin County has grown 11.5% since 2010 (5,915 → 6,596), a +0.78% annualized rate.
The median household income in Hamlin County, South Dakota is $83,194, with mean (average) household income of $101,165 and per-capita income of $35,757. 4.2% of residents live below the federal poverty level.
In Hamlin County, the largest racial and ethnic groups are White (92.8%), Hispanic or Latino (1.8%), Black or African American (0.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Hamlin County, South Dakota is 32.5 years. Residents are 48.6% female and 51.4% male.
The median home value in Hamlin County is $207,700 and median monthly rent is $769. 81.5% of occupied housing units are owner-occupied. The county has 2,831 total housing units, 23.0% of which are vacant.
The largest employment sector in Hamlin County, South Dakota is professional, scientific, and management services, employing 21.2% of workers. The unemployment rate is 1.2%.
Sioux Falls is among the largest cities associated with Hamlin County, South Dakota, with a population of 197,642.
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Statewide data for South Dakota
Population, race, income, age, and trends across South Dakota
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.