ZIP Codes Near 57481 — Westport, SD
There are 9 ZIP codes within 25 miles of 57481, covering 9 cities and towns. Distances are straight-line between ZIP centroids, not driving distance.
Cities within 25 miles
| City | Distance | ZIP codes |
|---|---|---|
| Barnard, SD | 10.2 mi | 1 |
| Frederick, SD | 13.9 mi | 1 |
| Aberdeen, SD | 14.0 mi | 1 |
| Leola, SD | 16.5 mi | 1 |
| Columbia, SD | 16.8 mi | 1 |
| Ipswich, SD | 19.8 mi | 1 |
| Bath, SD | 20.7 mi | 1 |
| Forbes, ND | 23.1 mi | 1 |
| Houghton, SD | 24.4 mi | 1 |
All 9 ZIP codes, by distance
| ZIP | City | County | Distance |
|---|---|---|---|
| 57426 | Barnard, SD | Brown | 10.2 mi |
| 57441 | Frederick, SD | Brown | 13.9 mi |
| 57401 | Aberdeen, SD | Brown | 14.0 mi |
| 57456 | Leola, SD | McPherson | 16.5 mi |
| 57433 | Columbia, SD | Brown | 16.8 mi |
| 57451 | Ipswich, SD | Edmunds | 19.8 mi |
| 57427 | Bath, SD | Brown | 20.7 mi |
| 58439 | Forbes, ND | Dickey | 23.1 mi |
| 57449 | Houghton, SD | Brown | 24.4 mi |
How this list is calculated
Each ZIP code is represented by a single centroid point, and distance is measured great-circle from the centroid of 57481 to each of the others. Two consequences worth knowing about:
- Large rural ZIPs distort the picture. A ZIP covering 400 square miles has a centroid that may be 15 miles from its own nearest edge, so a code listed as 30 miles away can begin much closer.
- These are not driving distances. A river, a bay, or a mountain range makes a 12-mile straight line into a 40-minute drive. For service-area planning, use this as a first cut and check the routes.
If you need this programmatically — for a store locator, a delivery zone, or a territory map — the radius endpoint returns the same data as JSON, with an arbitrary radius and optional state filtering.
Back to 57481
County, time zone, area codes, and the full ZIP+4 lookup for any address in Westport.