ZIP code · Rock Rapids · Iowa · United States
ZIP code 51246 — Rock Rapids
ZIP code 51246 serves Rock Rapids, Iowa.
- Postal code
- 51246Single source Value from one source, not cross-checked.
- City
- Rock Rapids
- County
- Lyon FIPS 19119
- State
- Iowa
- Country
- United States
- Coordinates
- 43.4272, -96.1781 — precision precise (locality)
View on OpenStreetMap - Population
- 4,075 (ZCTA, ACS 5-year)
- Population density
- 25 / sq mi
- Land area
- 161.1 sq mi (417.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $69,320
- Per-capita income
- $30,859
- Median age
- 38.5
- Households
- 1,405
- Housing units
- 1,616
- Median home value
- $232,900
- Median gross rent
- $773 / 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 51246 with another ZIP · ZIPs within 25 miles · distance from 51246
Map of ZIP code 51246
Climate — monthly normals
Warmest month Jul (avg high 85°F), coldest Jan (avg low 6°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 25 | 30 | 43 | 58 | 70 | 81 | 85 | 82 | 75 | 61 | 44 | 30 |
| Avg low °F | 6 | 10 | 22 | 34 | 47 | 58 | 62 | 59 | 50 | 36 | 23 | 12 |
| Precip in | 0.6 | 0.7 | 1.5 | 3.0 | 4.0 | 5.0 | 3.6 | 3.1 | 3.2 | 2.2 | 1.4 | 0.8 |
NOAA 1991–2020 climate normals from the nearest station: ROCK RAPIDS (0.5 mi) · NOAA NCEI
Places in ZIP 51246
- 5 schools
- 1 hospitals & clinics
- 1 pharmacies
- 1 supermarkets
- 5 restaurants & cafés
- 7 parks
- 3 playgrounds
- 1 libraries
- 1 post offices
- 10 places of worship
- 1 banks
- 4 gas stations
- 1 EV charging stations
- 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