Find the last 4 digits (ZIP+4) for an address in 50136

ZIP 50136, Keswick, IA is filled in. Just type the street address.

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ZIP Code 50136 – Keswick, IA

Keswick, Iowa · Keokuk County · Central time

ZIP code50136
CityKeswick
StateIowa
CountyKeokuk CountyIowa County
Population376
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area39.82 sq mi
Center (lat, long)41.4695, -92.2928

Area codes in this area

641

These are the area codes that most often serve ZIP 50136 (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

50255 Thornburg · 2.2 mi50104 Gibson · 5.2 mi52355 Webster · 5.3 mi50268 What Cheer · 5.6 mi52222 Deep River · 7.8 mi50027 Barnes City · 9.2 mi52308 Millersburg · 9.9 mi52550 Delta · 11.2 mi

About ZIP 50136

ZIP code 50136 is assigned to Keswick, Iowa. It crosses 2 counties; most of its land is in Keokuk County. Its Census area covers about 39.82 square miles of land. The closest neighboring ZIP is 50255 (Thornburg), about 2.2 miles away.

Every address in 50136 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