Find the last 4 digits (ZIP+4) for an address in 66521

ZIP 66521, Onaga, KS is filled in. Just type the street address.

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ZIP Code 66521 – Onaga, KS

Onaga, Kansas · Pottawatomie County · Central time

ZIP code66521
CityOnaga
StateKansas
CountyPottawatomie CountyNemaha County
Population1,417
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area177.63 sq mi
Center (lat, long)39.4707, -96.2294

Area codes in this area

785

These are the area codes that most often serve ZIP 66521 (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

66432 Havensville · 8.2 mi66549 Westmoreland · 11.5 mi66422 Emmett · 12.2 mi66540 Soldier · 13.8 mi66426 Fostoria · 14.9 mi66544 Vermillion · 15.2 mi66415 Centralia · 15.9 mi66417 Corning · 16.4 mi

About ZIP 66521

ZIP code 66521 is assigned to Onaga, Kansas. It crosses 2 counties; most of its land is in Pottawatomie County. Its Census area covers about 177.63 square miles of land. The closest neighboring ZIP is 66432 (Havensville), about 8.2 miles away.

Every address in 66521 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