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Grant County, SD
9 cities and towns and 10 ZIP codes in Grant County, South Dakota.
Population
7,563
Land area
681sq mi
People per sq mi
11
ZIP codes
10
Cities and towns in Grant County
Grant County at a glance
- The median household income is $75,028, close to the South Dakota median.
- A typical owner-occupied home is valued at $171,000 (34% below South Dakota) and median rent is $763 a month.
- Its largest cities are Milbank (3,525), Big Stone City (706) and Revillo (88).
Local data for Grant County, SD
Counts from official public data
Housing and community stats
Grant County, SD, American Community Survey 2020-2024
Median household income
$75,028
Poverty rate
11.6%
Median home value
$171,000
Prices +6.0% in a year
Median rent
$763/mo
Homeownership
75.6%
Bachelor's or higher
25.3%
Median age
44.5
Average commute
13.7 min
Largest reported origins and ancestries: German Americans (3,353), Norwegian Americans (1,049), Irish Americans (569).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
2.1%
Aug 2026, -0.6 pts in a year
Average annual pay
$56,495
3,744 jobs, 2025
Income per person
$77,092
BEA, 2024
Federal spending
$62.87M
FY 2026, $8,321 per person
PPP loans
$36.75M
921 loans, 3,945 jobs reported
Campaign donations
$38.13K
Itemized, 2026 cycle
How people get to work
Grant County, SD, workers 16 and older. American Community Survey 5-year estimates
- Drove alone74.9%
- Carpooled9.0%
- Public transit0.0%
- Walked4.5%
- Bicycle0.4%
- Taxi, ride-hailing, motorcycle or other0.2%
- Worked from home11.0%
Average one-way commute: 13.7 minutes for people who do not work from home.
Environment and hazard risk
Grant County, SD, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: cold wave
Storm events since 1996
532
Most often hail
Flood insurance policies
8
0.2% of homes, county
July high / Jan low
81° / 4°F
25.4 inches of rain a year
Hazards, floods and storm historyCheck a flood zone14 historic places
Health statistics
Share of adults in Grant County, SD, CDC PLACES estimates
Obesity
37.3%
U.S. 33.3% +4.0 pts
Diabetes
12.8%
U.S. 12.1% +0.7 pts
Smoking
14.7%
U.S. 12.8% +1.9 pts
Uninsured (18-64)
9.4%
U.S. 11.1% -1.7 pts
Cities, towns and ZIP codes in Grant County
Population shown
Frequently asked questions
- What is the largest city in Grant County, SD?
- Milbank is the largest city or town in Grant County, with about 3,525 residents.
- How many ZIP codes are in Grant County?
- Grant County includes 10 ZIP Code Tabulation Areas, including 57216, 57246, 57251, 57252, 57256.
- What is the population of Grant County, SD?
- About 7,563 people live in Grant County, based on American Community Survey 5-year estimates.
- What counties border Grant County?
- Grant County borders Codington County, Roberts County, Lac qui Parle County, MN, Day County, Big Stone County, MN, Deuel County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023