Find the last 4 digits (ZIP+4) for an address in 51010

ZIP 51010, Castana, IA is filled in. Just type the street address.

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ZIP Code 51010 – Castana, IA

Castana, Iowa · Monona County · Central time

ZIP code51010
CityCastana
StateIowa
CountyMonona County
Population425
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area72.03 sq mi
Center (lat, long)42.0975, -95.9382

Area codes in this area

712

These are the area codes that most often serve ZIP 51010 (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

51051 Rodney · 7.6 mi51040 Onawa · 8 mi51034 Mapleton · 8.8 mi51056 Smithland · 10 mi51572 Soldier · 10.3 mi51026 Hornick · 12.8 mi51558 Moorhead · 12.9 mi51063 Whiting · 13.2 mi

About ZIP 51010

ZIP code 51010 is assigned to Castana, Iowa. It lies in Monona County. Its Census area covers about 72.03 square miles of land. The closest neighboring ZIP is 51051 (Rodney), about 7.6 miles away.

Every address in 51010 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