📍 View location on OpenStreetMap (45.687530, -100.053950)
| Data Metric | Local Statistic |
|---|---|
| Postal / Zip Code | 57646 |
| Primary City | Mound City |
| State / Province | SD |
| County | Campbell |
| Total Population | 272 |
| Population Density | 0.8 people/sq mi |
| Timezone | America/Chicago |
| Metric | ZIP 57646 | Campbell County records | SD records |
|---|---|---|---|
| Population estimate | 272 | 1,494 (sum) | 906,188 (sum) |
| Population Density | 0.8 /sq mi | -- | -- |
| County population rank | #3 of 3 | -- | -- |
| State population rank | #274 of 372 | -- | -- |
Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.
| ZIP Code | City | Distance | Population estimate |
|---|---|---|---|
| ZIP 57632 | Herreid | 9.8 mi | 757 |
| ZIP 57631 | Glenham | 13.4 mi | 364 |
| ZIP 57452 | Java | 14.0 mi | 136 |
| ZIP 57472 | Selby | 18.1 mi | 1,165 |
| ZIP 57648 | Pollock | 20.9 mi | 465 |
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →