There are 32 zip codes in Montgomery County, Ohio. The most populated is 45424, located in Dayton. * 2024 populations estimated based on the latest ACS 5-year data.
Zip Code | Population | City |
|---|---|---|
| 45424 | 50,221 | Dayton |
| 45458 | 37,128 | Dayton |
| 45342 | 36,127 | Miamisburg |
| 45459 | 28,509 | Dayton |
| 45417 | 28,029 | Dayton |
| 45429 | 26,523 | Dayton |
| 45420 | 23,600 | Dayton |
| 45322 | 21,540 | Englewood |
| 45414 | 20,423 | Dayton |
| 45406 | 19,954 | Dayton |
| 45405 | 19,059 | Dayton |
| 45449 | 19,032 | Dayton |
| 45410 | 17,345 | Dayton |
| 45419 | 16,852 | Dayton |
| 45409 | 15,788 | Dayton |
| 45377 | 14,272 | Vandalia |
| 45426 | 13,591 | Dayton |
| 45403 | 13,002 | Dayton |
| 45415 | 12,601 | Dayton |
| 45439 | 12,591 | Dayton |
| 45309 | 11,789 | Brookville |
| 45402 | 10,438 | Dayton |
| 45404 | 10,380 | Dayton |
| 45327 | 8,916 | Germantown |
| 45345 | 6,553 | New Lebanon |
| 45416 | 5,547 | Dayton |
| 45315 | 4,402 | Clayton |
| 45325 | 2,473 | Farmersville |
| 45354 | 632 | Phillipsburg |
| 45428 | 286 | Dayton |
| 45469 | 206 | Dayton |
| 45423 | 0 | Dayton |