ZIP code · Boyden · Iowa · United States
ZIP code 51234 — Boyden
ZIP code 51234 serves Boyden, Iowa.
- Postal code
- 51234Single source Value from one source, not cross-checked.
- City
- Boyden
- County
- Sioux FIPS 19167
- State
- Iowa
- Country
- United States
- Coordinates
- 43.2034, -95.9823 — precision precise (locality)
View on OpenStreetMap - Population
- 1,090 (ZCTA, ACS 5-year)
- Population density
- 22 / sq mi
- Land area
- 49.8 sq mi (129 km²) (ZCTA, ACS 5-year)
- Median household income
- $81,458
- Per-capita income
- $40,693
- Median age
- 35.6
- Households
- 424
- Housing units
- 424
- Median home value
- $208,000
- Median gross rent
- $771 / 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 51234 with another ZIP · ZIPs within 25 miles · distance from 51234
Map of ZIP code 51234
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 5°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 25 | 30 | 43 | 57 | 69 | 79 | 83 | 80 | 74 | 61 | 44 | 30 |
| Avg low °F | 5 | 9 | 21 | 32 | 46 | 57 | 60 | 58 | 48 | 35 | 22 | 11 |
| Precip in | 0.9 | 1.0 | 1.9 | 3.2 | 4.0 | 4.7 | 3.6 | 3.3 | 3.4 | 2.4 | 1.5 | 1.2 |
NOAA 1991–2020 climate normals from the nearest station: SHELDON (6.7 mi) · NOAA NCEI
Places in ZIP 51234
- 2 schools
- 1 parks
- 1 libraries
- 1 post offices
- 3 places of worship
- 2 gas 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