COUNTY · SD
Grant County, South Dakota
Grant County is a county in South Dakota with FIPS code 46051 and an estimated population of 7,553 (Census 2023), 23rd largest of 66 in the state.
County facts
- Name
- Grant County
- State
- South Dakota
- Type
- county
- FIPS code
- 46051
- State FIPS
- 46
- Population (2023)
- 7,553
- Change since 2020
- +0.2%
- State rank
- 23 of 66
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Grant County?
Grant County, South Dakota has the five-digit FIPS code 46051: 46 for the state and 051 for the county.
What state is Grant County in?
Grant County is in South Dakota.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.