ZIP code · Houghton · Iowa · United States
ZIP code 52631 — Houghton
ZIP code 52631 serves Houghton, Iowa.
- Postal code
- 52631Single source Value from one source, not cross-checked.
- City
- Houghton
- County
- Lee FIPS 19111
- State
- Iowa
- Country
- United States
- Coordinates
- 40.7700, -91.6138 — precision precise (locality)
View on OpenStreetMap - Population
- 76 (ZCTA, ACS 5-year)
- Population density
- 379 / sq mi
- Land area
- 0.2 sq mi (0.5 km²) (ZCTA, ACS 5-year)
- Median household income
- $104,375
- Per-capita income
- $49,888
- Median age
- 39.8
- Households
- 29
- Housing units
- 29
- Median home value
- $237,500
- Congressional district
- IA-1 (119th Congress)
- USDA hardiness zone
- 6a (-10 to -5 °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
- 319Telephone 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 52631 with another ZIP · ZIPs within 25 miles · distance from 52631
Map of ZIP code 52631
Climate — monthly normals
Warmest month Jul (avg high 86°F), coldest Jan (avg low 15°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 33 | 38 | 51 | 63 | 73 | 83 | 86 | 85 | 79 | 65 | 51 | 38 |
| Avg low °F | 15 | 19 | 29 | 40 | 52 | 62 | 65 | 63 | 54 | 43 | 31 | 21 |
| Precip in | 1.5 | 1.9 | 2.6 | 3.7 | 5.0 | 5.0 | 4.2 | 3.9 | 3.9 | 3.1 | 2.5 | 2.0 |
NOAA 1991–2020 climate normals from the nearest station: DONNELLSON (8.9 mi) · NOAA NCEI
Places in ZIP 52631
- 1 parks
- 1 playgrounds
- 1 libraries
- 1 post offices
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