ZIP Codes in Dayton, OH
Dayton uses 30 ZIP codes, all in Montgomery, Greene Counties. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 30 Dayton ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 45402 | standard | Montgomery | 9,407 |
| 45403 | standard | Montgomery | 13,608 |
| 45404 | standard | Montgomery | 9,826 |
| 45405 | standard | Montgomery | 18,955 |
| 45406 | standard | Montgomery | 19,991 |
| 45409 | standard | Montgomery | 15,293 |
| 45410 | standard | Montgomery | 14,694 |
| 45414 | standard | Montgomery | 21,167 |
| 45415 | standard | Montgomery | 12,465 |
| 45416 | standard | Montgomery | 5,640 |
| 45417 | standard | Montgomery | 28,186 |
| 45419 | standard | Montgomery | 17,008 |
| 45420 | standard | Montgomery | 24,411 |
| 45423 | standard | Montgomery | — |
| 45424 | standard | Montgomery | 50,725 |
| 45426 | standard | Montgomery | 14,114 |
| 45428 | standard | Montgomery | 272 |
| 45429 | standard | Montgomery | 26,347 |
| 45430 | standard | Greene | 7,371 |
| 45431 | standard | Greene | 27,951 |
| 45432 | standard | Greene | 15,055 |
| 45433 | standard | Greene | 1,508 |
| 45434 | standard | Greene | 12,529 |
| 45435 | standard | Greene | 134 |
| 45439 | standard | Montgomery | 11,914 |
| 45440 | standard | Greene | 22,358 |
| 45449 | standard | Montgomery | 19,066 |
| 45458 | standard | Montgomery | 38,712 |
| 45459 | standard | Montgomery | 28,553 |
| 45469 | standard | Montgomery | 168 |
Finding a ZIP+4 in Dayton
Knowing which of these 30 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Dayton street almost always have different ZIP+4 codes even though they share all five leading digits.
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