ZIP code · Harlan · Iowa · United States
ZIP code 51593 — Harlan
ZIP code 51593 serves Harlan, Iowa.
- Postal code
- 51593Single source Value from one source, not cross-checked.
- City
- Harlan
- County
- Pottawattamie
- State
- Iowa
- Country
- United States
- Coordinates
- 41.4980, -95.3636 — precision precise (locality)
View on OpenStreetMap - USDA hardiness zone
- 5b (-15 to -10 °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 51593 with another ZIP · ZIPs within 25 miles · distance from 51593
Climate — monthly normals
Warmest month Jul (avg high 86°F), coldest Jan (avg low 10°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 31 | 36 | 50 | 63 | 74 | 84 | 86 | 84 | 79 | 65 | 49 | 36 |
| Avg low °F | 10 | 14 | 25 | 36 | 49 | 60 | 64 | 61 | 52 | 39 | 26 | 16 |
| Precip in | 0.9 | 1.0 | 2.0 | 3.3 | 4.7 | 5.2 | 3.7 | 4.3 | 4.0 | 2.4 | 1.4 | 1.3 |
NOAA 1991–2020 climate normals from the nearest station: HARLAN (10.3 mi) · NOAA NCEI
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 · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page