ZIP code · Royal · Iowa · United States
ZIP code 51357 — Royal
ZIP code 51357 serves Royal, Iowa.
- Postal code
- 51357Single source Value from one source, not cross-checked.
- City
- Royal
- County
- Clay FIPS 19041
- State
- Iowa
- Country
- United States
- Coordinates
- 43.0488, -95.2679 — precision precise (locality)
View on OpenStreetMap - Population
- 841 (ZCTA, ACS 5-year)
- Population density
- 23 / sq mi
- Land area
- 37.3 sq mi (96.6 km²) (ZCTA, ACS 5-year)
- Median household income
- $72,344
- Per-capita income
- $40,399
- Median age
- 34.3
- Households
- 345
- Housing units
- 370
- Median home value
- $121,300
- Median gross rent
- $785 / 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 51357 with another ZIP · ZIPs within 25 miles · distance from 51357
Map of ZIP code 51357
Climate — monthly normals
Warmest month Jul (avg high 85°F), coldest Jan (avg low 8°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 26 | 30 | 44 | 59 | 71 | 81 | 85 | 82 | 76 | 61 | 45 | 31 |
| Avg low °F | 8 | 13 | 25 | 36 | 48 | 59 | 62 | 59 | 50 | 37 | 25 | 14 |
| Precip in | 0.3 | 0.4 | 1.4 | 2.8 | 3.8 | 4.0 | 3.8 | 3.3 | 3.2 | 2.2 | 1.1 | 0.4 |
NOAA 1991–2020 climate normals from the nearest station: SPENCER MUNI AP (8.6 mi) · NOAA NCEI
Places in ZIP 51357
- 1 schools
- 1 parks
- 1 libraries
- 1 post offices
- 5 places of worship
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