| ZIP Code | 57233 |
| City | Erwin |
| State | South Dakota (SD) |
| County | Kingsbury |
| Timezone | America/Chicago |
| Coordinates | 44.5099200, -97.3993000 |
| Population | 350 |
| ZIP Type | STANDARD |
| Country | United States |
Located in South Dakota, the United States is home to the sparsely populated community of Erwin, served by ZIP code 57233. It sits within Kingsbury County.
Erwin has a reported population of 350. That's below the South Dakota average of about 2,435 people per ZIP code.
Population density runs around 3 people per sq. mile, making it a rural area.
Nearby communities in South Dakota include Sioux Falls, Rapid City.
The ZIP code for Erwin, South Dakota is 57233.
57233 is located in Kingsbury County, South Dakota.
The population of 57233 (Erwin) is approximately 350 people.
57233 is less populated than the typical South Dakota ZIP code, which averages around 2,435 people.
ZIP code codes near 57233 include 57106, 57701, 57702.