Find the last 4 digits (ZIP+4) for an address in 52231

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ZIP Code 52231 – Harper, IA

Harper, Iowa · Keokuk County · Central time

ZIP code52231
CityHarper
StateIowa
CountyKeokuk County
Population539
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area34.52 sq mi
Center (lat, long)41.3588, -92.0586

Area codes in this area

641

These are the area codes that most often serve ZIP 52231 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

52248 Keota · 6.4 mi52591 Sigourney · 7.5 mi52335 South English · 7.5 mi52355 Webster · 9.8 mi52576 Ollie · 10.3 mi52562 Hayesville · 11.8 mi52585 Richland · 12.3 mi52359 West Chester · 12.9 mi

About ZIP 52231

ZIP code 52231 is assigned to Harper, Iowa. It lies in Keokuk County. Its Census area covers about 34.52 square miles of land. The closest neighboring ZIP is 52248 (Keota), about 6.4 miles away.

Every address in 52231 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources