ZIP code · Elk Horn · Iowa · United States
ZIP code 51531 — Elk Horn
ZIP code 51531 serves Elk Horn, Iowa.
- Postal code
- 51531Single source Value from one source, not cross-checked.
- City
- Elk Horn
- County
- Shelby FIPS 19165
- State
- Iowa
- Country
- United States
- Coordinates
- 41.5829, -95.0700 — precision precise (locality)
View on OpenStreetMap - Population
- 943 (ZCTA, ACS 5-year)
- Population density
- 35 / sq mi
- Land area
- 27.3 sq mi (70.6 km²) (ZCTA, ACS 5-year)
- Median household income
- $58,929
- Per-capita income
- $33,528
- Median age
- 43
- Households
- 374
- Housing units
- 408
- Median home value
- $132,300
- Median gross rent
- $643 / month
- Congressional district
- IA-4 (119th Congress)
- USDA hardiness zone
- 5a (-20 to -15 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 712Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 51531 with another ZIP · ZIPs within 25 miles · distance from 51531
Map of ZIP code 51531
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 9°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 28 | 33 | 46 | 60 | 70 | 80 | 83 | 81 | 75 | 62 | 46 | 33 |
| Avg low °F | 9 | 13 | 24 | 35 | 48 | 58 | 62 | 59 | 50 | 37 | 25 | 14 |
| Precip in | 0.9 | 1.1 | 1.7 | 3.6 | 5.2 | 5.1 | 3.8 | 4.5 | 3.5 | 2.8 | 1.5 | 1.2 |
NOAA 1991–2020 climate normals from the nearest station: AUDUBON (11.5 mi) · NOAA NCEI
Places in ZIP 51531
- 1 schools
- 1 doctors & dentists
- 2 parks
- 1 libraries
- 1 post offices
- 2 places of worship
- 1 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page