ZIP code · Dow City · Iowa · United States
ZIP code 51528 — Dow City
ZIP code 51528 serves Dow City, Iowa.
- Postal code
- 51528Single source Value from one source, not cross-checked.
- City
- Dow City
- County
- Crawford FIPS 19047
- State
- Iowa
- Country
- United States
- Coordinates
- 41.9134, -95.4862 — precision precise (locality)
View on OpenStreetMap - Population
- 604 (ZCTA, ACS 5-year)
- Population density
- 8 / sq mi
- Land area
- 71.1 sq mi (184.2 km²) (ZCTA, ACS 5-year)
- Median household income
- $69,000
- Per-capita income
- $43,636
- Median age
- 52.1
- Households
- 252
- Housing units
- 262
- Median home value
- $135,400
- Median gross rent
- $717 / 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 51528 with another ZIP · ZIPs within 25 miles · distance from 51528
Map of ZIP code 51528
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 10°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 27 | 32 | 45 | 58 | 70 | 80 | 83 | 81 | 75 | 62 | 46 | 32 |
| Avg low °F | 10 | 14 | 25 | 36 | 49 | 59 | 63 | 61 | 52 | 39 | 26 | 16 |
| Precip in | 0.7 | 1.0 | 1.9 | 3.4 | 4.6 | 4.9 | 4.1 | 4.4 | 3.3 | 2.6 | 1.4 | 1.2 |
NOAA 1991–2020 climate normals from the nearest station: DENISON (11.7 mi) · NOAA NCEI
Places in ZIP 51528
- 1 schools
- 2 parks
- 1 libraries
- 1 post offices
- 4 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