Campbell County SD United States
| County FIPS | 46021 |
| Largest City | Herreid |
| State | South Dakota |
| Latitude | 45.7712 |
| Longitude | -100.0516 |
| Population | 1,593 |
| Density | 2.18 people per square mile |
| Time Zone | America/Chicago |
Median household: $68,929
Median individual: $40,254
Mode: 91.1% White
Median house value: $114,387.0
Median: 50.9 years old
With at least college degree: 36.0%
With STEM degree: 37.7%
Never married: 14.1%
Unemployed: 3.1%
All data comes from the SimpleMaps US Counties Database, 2026.
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