Find the last 4 digits (ZIP+4) for an address in 51102

ZIP 51102, Sioux City, IA is filled in. Just type the street address.

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ZIP Code 51102 – Sioux City, IA

Sioux City, Iowa · Woodbury County · Central time

ZIP code51102
CitySioux City
StateIowa
CountyWoodbury County
PopulationNot published (no Census ZIP area)
Time zoneCentral · local time
ZIP typePO box or unique ZIP (no Census area)
Center (lat, long)42.3684, -96.3180

Area codes in this area

712

These are the area codes that most often serve ZIP 51102 (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

51054 Sergeant Bluff · 1.2 mi51052 Salix · 4.9 mi51111 Sioux City · 5.2 mi51106 Sioux City · 6.5 mi51007 Bronson · 7 mi68030 Homer · 8.1 mi68776 South Sioux City · 9 mi68731 Dakota City · 9.3 mi

About ZIP 51102

ZIP code 51102 is assigned to Sioux City, Iowa. It lies in Woodbury County. It is a PO-box-only or single-address ZIP, so the Census Bureau does not publish an area for it; the location shown is approximate. The closest neighboring ZIP is 51054 (Sergeant Bluff), about 1.2 miles away.

Every address in 51102 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