Checked
Hamlin County, SD
9 cities and towns and 6 ZIP codes in Hamlin County, South Dakota.
Population
6,373
Land area
507sq mi
People per sq mi
13
ZIP codes
6
Cities and towns in Hamlin County
Hamlin County at a glance
- The median household income is $87,101, 16% above the South Dakota median of $75,081.
- A typical owner-occupied home is valued at $208,600 (19% below South Dakota) and median rent is $800 a month.
- Its largest cities are Lake Norden (889), Estelline (831) and Castlewood (804).
Local data for Hamlin County, SD
Counts from official public data
Housing and community stats
Hamlin County, SD, American Community Survey 2020-2024
Median household income
$87,101
Poverty rate
6.9%
Median home value
$208,600
Prices +11.8% in a year
Median rent
$800/mo
Homeownership
82.0%
Bachelor's or higher
24.5%
Median age
31.8
Average commute
22.2 min
Largest reported origins and ancestries: German Americans (1,772), Norwegian Americans (892), Dutch Americans (400).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
1.5%
Aug 2026, 0.0 pts in a year
Average annual pay
$58,566
2,703 jobs, 2025
Income per person
$70,519
BEA, 2024
Federal spending
$39.74M
FY 2026, $6,447 per person
PPP loans
$21.75M
764 loans, 2,193 jobs reported
Campaign donations
$21.23K
Itemized, 2026 cycle
How people get to work
Hamlin County, SD, workers 16 and older. American Community Survey 5-year estimates
- Drove alone73.4%
- Carpooled12.0%
- Public transit0.0%
- Walked7.3%
- Bicycle0.1%
- Taxi, ride-hailing, motorcycle or other0.3%
- Worked from home7.0%
Average one-way commute: 22.2 minutes for people who do not work from home.
Environment and hazard risk
Hamlin County, SD, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: ice storm
Storm events since 1996
586
Most often hail
Flood insurance policies
61
1.7% of homes, county
July high / Jan low
83° / 3°F
24.3 inches of rain a year
Hazards, floods and storm historyCheck a flood zone18 historic places
Health statistics
Share of adults in Hamlin County, SD, CDC PLACES estimates
Obesity
34.6%
U.S. 33.3% +1.3 pts
Diabetes
10.1%
U.S. 12.1% -2.0 pts
Smoking
14.6%
U.S. 12.8% +1.8 pts
Uninsured (18-64)
9.1%
U.S. 11.1% -2.0 pts
Cities, towns and ZIP codes in Hamlin County
Population shown
Frequently asked questions
- What is the largest city in Hamlin County, SD?
- Lake Norden is the largest city or town in Hamlin County, with about 889 residents.
- How many ZIP codes are in Hamlin County?
- Hamlin County includes 6 ZIP Code Tabulation Areas, including 57221, 57223, 57234, 57241, 57242.
- What is the population of Hamlin County, SD?
- About 6,373 people live in Hamlin County, based on American Community Survey 5-year estimates.
- What counties border Hamlin County?
- Hamlin County borders Brookings County, Codington County, Kingsbury County, Deuel County, Clark County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023