Montgomery County, OH ZIP codes
There are 46 ZIP codes in Montgomery County, OH, in 10 towns, from 45309 to 45490. The largest are 45424 (Dayton), 45458 (Dayton) and 45342 (Miamisburg).
The county seat is Dayton.
- ZIP codes
- 46
- Towns
- 10
- County seat
- Dayton
- County FIPS
39113- State
- Ohio
- Population
- 536,096
- Median household income
- $66,139
- Land area
- 461 sq mi
- Metro area
- Dayton-Kettering-Beavercreek
Montgomery County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Montgomery County ZIP codes
The ZIP codes of Montgomery County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Montgomery County in numbers
About 536,096 people live in Montgomery County, in 231,319 households, the 5th most populous of Ohio's 88 counties. The median household income is $66,139 a year, 7% below the Ohio median of $71,389 (US: $80,734). The median owner-occupied home is valued at $180,900 (16% below the Ohio median), and median gross rent is $1,026 a month. The median age is 38.8; 31.3% of adults 25 and over hold a bachelor's degree or higher (31.5% across Ohio); the average commute takes 22 minutes.
| Population | 536,096 |
|---|---|
| Households | 231,319 |
| Median age | 38.8 |
| Median household income | $66,139 |
| Median home value | $180,900 |
| Median gross rent | $1,026 |
| Bachelor's degree or higher | 31.3% |
| Mean commute | 21.9 min |
| Population density | 1,162 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Montgomery County
| Town | ZIP codes | Population |
|---|---|---|
| Dayton | 36 | 136,579 |
| Miamisburg | 2 | 19,948 |
| Vandalia | 1 | 15,053 |
| Englewood | 1 | 13,356 |
| Clayton | 1 | 13,277 |
| Germantown | 1 | 5,825 |
| Brookville | 1 | 5,779 |
| New Lebanon | 1 | 4,169 |
| Farmersville | 1 | 1,079 |
| Phillipsburg | 1 | 406 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Montgomery County.
- Butler County (20)
- Warren County (12)
- Greene County (17)
- Clark County (16)
- Miami County (12)
- Darke County (16)
- Preble County (11)
- Champaign County (11)
Not sure you are in Montgomery County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Montgomery County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
45309 | Brookville , OH | Standard | 11,876 | $75,409 | $214,700 |
45315 | Clayton , OH | Standard | 4,905 | $92,333 | $213,300 |
45322 | Englewood , OH | Standard | 20,884 | $75,349 | $179,700 |
45325 | Farmersville , OH | Standard | 2,470 | $81,250 | $234,600 |
45327 | Germantown , OH | Standard | 9,315 | $94,741 | $218,900 |
45342 | Miamisburg , OH | Standard | 36,152 | $84,907 | $230,300 |
45343 | Miamisburg , OH | No street area | — | — | — |
45345 | New Lebanon , OH | Standard | 6,110 | $80,280 | $153,300 |
45354 | Phillipsburg , OH | Standard | 553 | $66,625 | $151,000 |
45377 | Vandalia , OH | Standard | 14,888 | $77,398 | $202,800 |
45401 | Dayton , OH | No street area | — | — | — |
45402 | Dayton , OH | Standard | 9,407 | $48,401 | $135,700 |
45403 | Dayton , OH | Standard | 13,608 | $38,323 | $87,500 |
45404 | Dayton , OH | Standard | 9,826 | $38,874 | $86,900 |
45405 | Dayton , OH | Standard | 18,955 | $43,973 | $84,200 |
45406 | Dayton , OH | Standard | 19,991 | $41,796 | $85,000 |
45409 | Dayton , OH | Standard | 15,293 | $87,283 | $249,000 |
45410 | Dayton , OH | Standard | 14,694 | $46,651 | $110,600 |
45412 | Dayton , OH | No street area | — | — | — |
45413 | Dayton , OH | No street area | — | — | — |
45414 | Dayton , OH | Standard | 21,167 | $54,485 | $182,300 |
45415 | Dayton , OH | Standard | 12,465 | $81,176 | $188,600 |
45416 | Dayton , OH | Standard | 5,640 | $46,174 | $81,100 |
45417 | Dayton , OH | Standard | 28,186 | $36,945 | $75,100 |
45419 | Dayton , OH | Standard | 17,008 | $92,264 | $248,400 |
45420 | Dayton , OH | Standard | 24,411 | $60,588 | $131,300 |
45422 | Dayton , OH | No street area | — | — | — |
45423 | Dayton , OH | Standard | 0 | — | — |
45424 | Dayton , OH | Standard | 50,725 | $80,605 | $183,800 |
45426 | Dayton , OH | Standard | 14,114 | $51,908 | $123,900 |
45428 | Dayton , OH | Standard | 272 | — | — |
45429 | Dayton , OH | Standard | 26,347 | $80,210 | $238,700 |
45437 | Dayton , OH | No street area | — | — | — |
45439 | Dayton , OH | Standard | 11,914 | $52,035 | $143,300 |
45441 | Dayton , OH | No street area | — | — | — |
45448 | Dayton , OH | No street area | — | — | — |
45449 | Dayton , OH | Standard | 19,066 | $63,800 | $163,500 |
45458 | Dayton , OH | Standard | 38,712 | $110,150 | $362,700 |
45459 | Dayton , OH | Standard | 28,553 | $89,592 | $302,100 |
45469 | Dayton , OH | Standard | 168 | — | — |
45470 | Dayton , OH | No street area | — | — | — |
45475 | Dayton , OH | No street area | — | — | — |
45479 | Dayton , OH | No street area | — | — | — |
45481 | Dayton , OH | No street area | — | — | — |
45482 | Dayton , OH | No street area | — | — | — |
45490 | Dayton , OH | No street area | — | — | — |
Cite this page
zipcodes.pro. “Montgomery County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/oh/county/montgomery
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