Find the last 4 digits (ZIP+4) for an address in 51023

ZIP 51023, Hawarden, IA is filled in. Just type the street address.

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ZIP Code 51023 – Hawarden, IA

Hawarden, Iowa · Sioux County · Central time

ZIP code51023
CityHawarden
StateIowa
CountySioux CountyUnion County
Population3,473
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area119.86 sq mi
Center (lat, long)43.0067, -96.4635

Area codes in this area

712

These are the area codes that most often serve ZIP 51023 (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

51011 Chatsworth · 6.8 mi51027 Ireton · 7.4 mi57034 Hudson · 8.7 mi57001 Alcester · 9.8 mi51001 Akron · 12.2 mi57027 Fairview · 13.1 mi51036 Maurice · 14.1 mi51250 Sioux Center · 14.2 mi

About ZIP 51023

ZIP code 51023 is assigned to Hawarden, Iowa. It crosses 2 counties; most of its land is in Sioux County. Its Census area covers about 119.86 square miles of land. The closest neighboring ZIP is 51011 (Chatsworth), about 6.8 miles away.

Every address in 51023 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