Lake County, South Dakota ZIP codes
7 ZIP codes are in Lake County, plus 7 that cross in from neighboring counties.
- ZIP codes
- 7
- Population in these ZIPs
- 11,128
- Avg. median income
- $80,400population-weighted
- Cities & towns
- 7
Loading map…
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Lake County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 57016 | Chester | 676 | $95,815 | $384,700 |
| 57042 | Madison | 7,756 | $71,868 | $267,100 |
| 57050 | Nunda | 176 | $116,563 | $262,500 |
| 57054 | Ramona | 703 | $86,875 | $97,100 |
| 57057 | Rutland | 196 | $71,500 | $266,700 |
| 57075 | Wentworth | 1,296 | $106,763 | $509,000 |
| 57076 | Winfred | 325 | $118,281 | $369,200 |
ZIP codes partly in Lake County
These ZIP codes are mostly in a neighboring county but cover part of Lake County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 57017 | Colman | Moody County | 1,628 | $96,447 | $369,200 |
| 57018 | Colton | Minnehaha County | 1,495 | $97,500 | $309,100 |
| 57022 | Dell Rapids | Minnehaha County | 5,339 | $100,656 | $371,800 |
| 57051 | Oldham | Kingsbury County | 163 | $56,250 | $112,500 |
| 57058 | Salem | McCook County | 1,881 | $84,286 | $254,900 |
| 57071 | Volga | Brookings County | 3,149 | $77,138 | $345,200 |
| 57212 | Arlington | Kingsbury County | 1,819 | $93,750 | $315,700 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Lake County
Nearby counties
Frequently asked questions
How many ZIP codes are in Lake County, South Dakota?
7 ZIP codes are mainly in Lake County, and 7 more ZIP codes from neighboring areas reach partly into it.
What cities are in Lake County?
ZIP codes in Lake County use the city names Chester, Madison, Nunda, Ramona, Rutland, Wentworth and Winfred.