ZIP code · Hopkinton · Iowa · United States
ZIP code 52237 — Hopkinton
ZIP code 52237 serves Hopkinton, Iowa.
- Postal code
- 52237Single source Value from one source, not cross-checked.
- City
- Hopkinton
- County
- Delaware FIPS 19055
- State
- Iowa
- Country
- United States
- Coordinates
- 42.3422, -91.2461 — precision precise (locality)
View on OpenStreetMap - Population
- 1,526 (ZCTA, ACS 5-year)
- Population density
- 18 / sq mi
- Land area
- 84.1 sq mi (217.9 km²) (ZCTA, ACS 5-year)
- Median household income
- $83,633
- Per-capita income
- $32,429
- Median age
- 27.6
- Households
- 506
- Housing units
- 574
- Median home value
- $135,200
- Median gross rent
- $381 / month
- Congressional districts
- IA-2 (also IA-1) (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
- 563Telephone 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 52237 with another ZIP · ZIPs within 25 miles · distance from 52237
Map of ZIP code 52237
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 11°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 27 | 32 | 45 | 59 | 70 | 80 | 83 | 81 | 75 | 62 | 46 | 33 |
| Avg low °F | 11 | 15 | 26 | 37 | 49 | 60 | 63 | 60 | 51 | 39 | 28 | 18 |
| Precip in | 1.3 | 1.4 | 2.1 | 4.0 | 4.2 | 6.0 | 4.5 | 4.7 | 3.8 | 3.3 | 2.3 | 1.8 |
NOAA 1991–2020 climate normals from the nearest station: CASCADE (12.4 mi) · NOAA NCEI
Places in ZIP 52237
- 1 schools
- 1 doctors & dentists
- 1 supermarkets
- 3 parks
- 2 playgrounds
- 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