Brown County, South Dakota ZIP codes
15 ZIP codes are in Brown County, plus 6 that cross in from neighboring counties. It's part of the Aberdeen, SD micro area.
- ZIP codes
- 15
- Population in these ZIPs
- 37,902
- Avg. median income
- $72,900population-weighted
- Cities & towns
- 14
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Brown County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 57401 | Aberdeen | 31,939 | $68,835 | $243,600 |
| 57402 PO Box | Aberdeen | — | — | — |
| 57426 | Barnard | 42 | $78,875 | — |
| 57427 | Bath | 384 | $83,977 | $363,700 |
| 57432 | Claremont | 507 | $112,765 | $77,600 |
| 57433 | Columbia | 318 | $50,417 | — |
| 57439 | Ferney | 0 | — | — |
| 57441 | Frederick | 670 | $108,009 | $152,100 |
| 57445 | Groton | 2,072 | $84,948 | $244,300 |
| 57446 | Hecla | 223 | $44,375 | $50,400 |
| 57449 | Houghton | 357 | $150,000 | — |
| 57460 | Mansfield | 257 | $139,500 | $233,900 |
| 57474 | Stratford | 237 | $100,833 | $204,700 |
| 57479 | Warner | 625 | $102,222 | $290,400 |
| 57481 | Westport | 271 | $68,125 | $215,600 |
ZIP codes partly in Brown County
These ZIP codes are mostly in a neighboring county but cover part of Brown County.
| ZIP code | City | State | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|---|
| 57422 | Andover | SD | Day County | 174 | $88,125 | — |
| 57434 | Conde | SD | Spink County | 506 | $73,393 | $181,500 |
| 57451 | Ipswich | SD | Edmunds County | 2,485 | $86,000 | $284,200 |
| 57461 | Mellette | SD | Spink County | 299 | $105,536 | $189,900 |
| 58436 | Ellendale | ND | Dickey County | 1,697 | $69,286 | $166,700 |
| 58439 | Forbes | ND | Dickey County | 385 | $73,611 | — |
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 Brown County
Nearby counties
Frequently asked questions
How many ZIP codes are in Brown County, South Dakota?
15 ZIP codes are mainly in Brown County, and 6 more ZIP codes from neighboring areas reach partly into it.
What cities are in Brown County?
ZIP codes in Brown County use the city names Aberdeen, Barnard, Bath, Claremont, Columbia, Ferney, Frederick, Groton, Hecla, Houghton, Mansfield and Stratford and others.
What metro area is Brown County in?
Brown County is part of the Aberdeen, SD micropolitan statistical area.