Find the last 4 digits (ZIP+4) for an address in 51577

ZIP 51577, Walnut, IA is filled in. Just type the street address.

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ZIP Code 51577 – Walnut, IA

Walnut, Iowa · Pottawattamie County · Central time

ZIP code51577
CityWalnut
StateIowa
CountyPottawattamie CountyShelby CountyCass County
Population1,561
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area83.56 sq mi
Center (lat, long)41.4636, -95.2038

Area codes in this area

712

These are the area codes that most often serve ZIP 51577 (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

51552 Marne · 4.9 mi51521 Avoca · 7.4 mi51593 Harlan · 8.6 mi51536 Hancock · 10.3 mi51531 Elk Horn · 10.4 mi50022 Atlantic · 10.7 mi51544 Lewis · 11.6 mi51537 Harlan · 13.7 mi

About ZIP 51577

ZIP code 51577 is assigned to Walnut, Iowa. It crosses 3 counties; most of its land is in Pottawattamie County. Its Census area covers about 83.56 square miles of land. The closest neighboring ZIP is 51552 (Marne), about 4.9 miles away.

Every address in 51577 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