County · South Dakota · United States
Lake County ZIP codes
7 ZIP codes · 7 cities · FIPS 46079
Key facts
- State
- South Dakota (SD)
- FIPS code
- 46079
- Population
- 11,052
- Median household income
- $73,792
- Median age
- 43.7
- Land area
- 562.9 sq mi (1,457.9 km²)
- Population density
- 20 / sq mi
- Area codes
- 605
Cities and ZIP codes in Lake County (7)
| City | ZIP codes |
|---|---|
| Chester | 57016 |
| Madison | 57042 |
| Nunda | 57050 |
| Ramona | 57054 |
| Rutland | 57057 |
| Wentworth | 57075 |
| Winfred | 57076 |
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.