ZIP code · Jamaica · Iowa · United States
ZIP code 50128 — Jamaica
ZIP code 50128 serves Jamaica, Iowa.
- Postal code
- 50128Single source Value from one source, not cross-checked.
- City
- Jamaica
- County
- Guthrie FIPS 19077
- State
- Iowa
- Country
- United States
- Coordinates
- 41.8419, -94.3204 — precision precise (locality)
View on OpenStreetMap - Population
- 331 (ZCTA, ACS 5-year)
- Population density
- 12 / sq mi
- Land area
- 28.2 sq mi (73.2 km²) (ZCTA, ACS 5-year)
- Median household income
- $50,179
- Per-capita income
- $34,945
- Median age
- 62.6
- Households
- 183
- Housing units
- 188
- Median home value
- $106,300
- Median gross rent
- $536 / month
- Congressional district
- IA-3 (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
- 641Telephone 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 50128 with another ZIP · ZIPs within 25 miles · distance from 50128
Map of ZIP code 50128
Climate — monthly normals
Warmest month Jul (avg high 85°F), coldest Jan (avg low 10°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 34 | 48 | 61 | 72 | 82 | 85 | 83 | 77 | 64 | 48 | 35 |
| Avg low °F | 10 | 14 | 26 | 37 | 49 | 60 | 64 | 61 | 52 | 39 | 27 | 17 |
| Precip in | 0.9 | 1.1 | 2.0 | 4.1 | 5.2 | 4.9 | 4.4 | 4.1 | 3.4 | 2.7 | 1.9 | 1.4 |
NOAA 1991–2020 climate normals from the nearest station: PERRY (10.8 mi) · NOAA NCEI
Places in ZIP 50128
- 1 schools
- 2 bars & pubs
- 1 playgrounds
- 1 libraries
- 1 post offices
- 1 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