Zip Code 51531 — Elk Horn, IA
51531 is a ZIP Code associated with Elk Horn, IA, located within Shelby. 51531 ranks #3 out of 10 ZIP codes in Shelby County by population (and #505 out of 970 in IA). The area supports an estimated population of 889 residents across Data Pending housing units, with a population density of 12.6 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (41.587510, -95.088370)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 51531 |
| Primary City | Elk Horn |
| State / Province | IA |
| County | Shelby |
| Total Population | 889 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 12.6 people/sq mi |
| Timezone | America/Chicago |
How 51531 Compares
| Metric | ZIP 51531 | Shelby County | IA State Average |
|---|
| Population | 889 | 11,310 (Total) | 3,210,984 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 12.6 /sq mi | -- | -- |
| County Pop Rank | #3 of 10 | -- | -- |
Nearby ZIP Codes
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 →