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Lyman County, SD
7 cities and towns and 6 ZIP codes in Lyman County, South Dakota.
Population
3,724
Land area
1,642sq mi
People per sq mi
2
ZIP codes
6
Cities and towns in Lyman County
Lyman County at a glance
- Lyman County is 81% less dense than South Dakota as a whole.
- Households here earn a median of $67,143 a year, 11% less than the South Dakota figure of $75,081.
- A typical owner-occupied home is valued at $165,800 (36% below South Dakota) and median rent is $651 a month.
- The biggest population centers are Lower Brule (743), Oacoma (548) and West Brule (471).
Local data for Lyman County, SD
Counts from official public data
Housing and community stats
Lyman County, SD, American Community Survey 2020-2024
Median household income
$67,143
Poverty rate
23.7%
Median home value
$165,800
Median rent
$651/mo
Homeownership
69.9%
Bachelor's or higher
24.5%
Median age
36.1
Average commute
15.8 min
Largest reported origins and ancestries: German Americans (584), Irish Americans (296), Norwegian Americans (182).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
1.9%
Sep 2026, -0.1 pts in a year
Average annual pay
$40,362
1,346 jobs, 2025
Income per person
$52,419
BEA, 2024
Federal spending
$65.9M
FY 2026, $17,731 per person
PPP loans
$10.6M
452 loans, 1,355 jobs reported
Campaign donations
$21.7K
Itemized, 2026 cycle
How people get to work
Lyman County, SD, workers 16 and older. American Community Survey 5-year estimates
- Drove alone73.4%
- Carpooled8.2%
- Public transit0.8%
- Walked3.1%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other3.4%
- Worked from home11.2%
Average one-way commute: 15.8 minutes for people who do not work from home.
Environment and hazard risk
Lyman County, SD, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: cold wave
Storm events since 1996
855
Most often thunderstorm wind
Flood insurance policies
2
0.1% of homes, county
July high / Jan low
90° / 9°F
20.8 inches of rain a year
Hazards, floods and storm historyCheck a flood zone2 historic places
Health statistics
Share of adults in Lyman County, SD, CDC PLACES estimates
Obesity
40.1%
U.S. 33.3% +6.8 pts
Diabetes
15.8%
U.S. 12.1% +3.7 pts
Smoking
21.4%
U.S. 12.8% +8.6 pts
Uninsured (18-64)
10.8%
U.S. 11.1% about the same
Cities, towns and ZIP codes in Lyman County
Population shown
Frequently asked questions
- What is the largest city in Lyman County, SD?
- Lower Brule is the largest city or town in Lyman County, with about 743 residents.
- How many ZIP codes are in Lyman County?
- Lyman County includes 6 ZIP Code Tabulation Areas, including 57365, 57544, 57548, 57568, 57569.
- What is the population of Lyman County, SD?
- About 3,724 people live in Lyman County, based on American Community Survey 5-year estimates.
- What counties border Lyman County?
- Lyman County borders Hughes County, Charles Mix County, Tripp County, Brule County, Gregory County, Stanley County, Mellette County, Buffalo County, Hyde County, Jones County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023