Find the last 4 digits (ZIP+4) for an address in 45440

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ZIP Code 45440 – Dayton, OH

Dayton, Ohio · Greene County · Eastern time

ZIP code45440
CityDayton
StateOhio
CountyGreene CountyMontgomery County
Population22,358
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area9.2 sq mi
Center (lat, long)39.6734, -84.0999

Area codes in this area

326937

These are the area codes that most often serve ZIP 45440 (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

45305 Bellbrook · 2.4 mi45430 Dayton · 3.3 mi45429 Dayton · 3.4 mi45420 Dayton · 3.5 mi45459 Dayton · 4 mi45419 Dayton · 4.6 mi45432 Dayton · 4.6 mi45301 Alpha · 4.8 mi

About ZIP 45440

ZIP code 45440 is assigned to Dayton, Ohio. It crosses 2 counties; most of its land is in Greene County. Its Census area covers about 9.2 square miles of land. The closest neighboring ZIP is 45305 (Bellbrook), about 2.4 miles away.

Every address in 45440 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