Find the last 4 digits (ZIP+4) for an address in 45312

ZIP 45312, Casstown, OH is filled in. Just type the street address.

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ZIP Code 45312 – Casstown, OH

Casstown, Ohio · Miami County · Eastern time

ZIP code45312
CityCasstown
StateOhio
CountyMiami CountyChampaign County
Population1,086
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area27.33 sq mi
Center (lat, long)40.0522, -84.0930

Area codes in this area

326937

These are the area codes that most often serve ZIP 45312 (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

45389 Christiansburg · 3.6 mi45373 Troy · 5.6 mi45326 Fletcher · 6.1 mi45374 Troy · 7.3 mi45344 New Carlisle · 8.1 mi43072 Saint Paris · 8.5 mi45371 Tipp City · 8.6 mi45349 North Hampton · 9.2 mi

About ZIP 45312

ZIP code 45312 is assigned to Casstown, Ohio. It crosses 2 counties; most of its land is in Miami County. Its Census area covers about 27.33 square miles of land. The closest neighboring ZIP is 45389 (Christiansburg), about 3.6 miles away.

Every address in 45312 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