Montgomery County, Ohio
32 ZIP codes · 461.35 sq mi of land · FIPS 39113
| Population | 536,096 |
|---|---|
| State | Ohio |
| FIPS code | 39113 |
| Time zone | Eastern |
| Land area | 461.35 sq mi |
| Center (lat, long) | 39.7537, -84.2906 |
Area codes in this area
These are the area codes that most often serve Montgomery County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
Dayton · 136,579Miamisburg · 19,948Vandalia · 15,053BrookvilleClaytonEnglewoodFarmersvilleGermantownNew LebanonPhillipsburg
ZIP codes in Montgomery County
45309 Brookville45315 Clayton45322 Englewood45325 Farmersville45327 Germantown45342 Miamisburg45345 New Lebanon45354 Phillipsburg45377 Vandalia45402 Dayton45403 Dayton45404 Dayton45405 Dayton45406 Dayton45409 Dayton45410 Dayton45414 Dayton45415 Dayton45416 Dayton45417 Dayton45419 Dayton45420 Dayton45423 Dayton45424 Dayton45426 Dayton45428 Dayton45429 Dayton45439 Dayton45449 Dayton45458 Dayton45459 Dayton45469 Dayton
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.