There are 42 cities in Montgomery County, Ohio.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Dayton | 1 | Ohio | 134,850 | 137,496 | -0.49% | 2,416 | 55.81 |
| Kettering | 2 | Ohio | 56,558 | 57,829 | -0.56% | 3,022 | 18.71 |
| Middletown | 3 | Ohio | 51,629 | 51,025 | 0.29% | 1,972 | 26.18 |
| Beavercreek | 4 | Ohio | 47,387 | 46,609 | 0.41% | 1,782 | 26.59 |
| Huber Heights | 5 | Ohio | 43,269 | 43,444 | -0.1% | 1,949 | 22.20 |
| Centerville | 6 | Ohio | 26,259 | 24,237 | 1.96% | 2,393 | 10.97 |
| Riverside | 7 | Ohio | 24,296 | 24,472 | -0.18% | 2,498 | 9.73 |
| Trotwood | 8 | Ohio | 22,894 | 23,076 | -0.2% | 751 | 30.49 |
| Miamisburg | 9 | Ohio | 19,781 | 19,913 | -0.17% | 1,614 | 12.26 |
| Springboro | 10 | Ohio | 19,589 | 19,131 | 0.58% | 2,127 | 9.21 |
| Vandalia | 11 | Ohio | 14,852 | 15,194 | -0.58% | 1,203 | 12.34 |
| Trenton | 12 | Ohio | 13,986 | 13,072 | 1.66% | 2,832 | 4.94 |
| Clayton | 13 | Ohio | 13,194 | 13,304 | -0.21% | 713 | 18.51 |
| Englewood | 14 | Ohio | 13,174 | 13,473 | -0.57% | 2,008 | 6.56 |
| West Carrollton | 15 | Ohio | 12,797 | 13,105 | -0.6% | 1,991 | 6.43 |
| Franklin | 16 | Ohio | 11,642 | 11,685 | -0.09% | 1,262 | 9.23 |
| Tipp City | 17 | Ohio | 10,546 | 10,297 | 0.59% | 1,313 | 8.04 |
| Shiloh | 18 | Ohio | 9,397 | 11,681 | -5.73% | 2,400 | 3.92 |
| Oakwood | 19 | Ohio | 9,315 | 9,565 | -0.67% | 4,244 | 2.19 |
| Bellbrook | 20 | Ohio | 7,438 | 7,321 | 0.39% | 2,373 | 3.13 |
| Union | 21 | Ohio | 6,976 | 6,867 | 0.39% | 840 | 8.30 |
| Moraine | 22 | Ohio | 6,635 | 6,438 | 0.74% | 715 | 9.28 |
| Brookville | 23 | Ohio | 5,893 | 5,991 | -0.42% | 1,502 | 3.92 |
| Carlisle | 24 | Ohio | 5,815 | 5,513 | 1.31% | 1,634 | 3.56 |
| Germantown | 25 | Ohio | 5,810 | 5,805 | 0.02% | 1,376 | 4.22 |
| Fort McKinley | 26 | Ohio | 5,547 | 2,925 | 13.41% | 4,155 | 1.33 |
| New Carlisle | 27 | Ohio | 5,472 | 5,559 | -0.4% | 2,040 | 2.68 |
| Hunter | 28 | Ohio | 4,690 | 3,918 | 4.29% | 2,168 | 2.16 |
| New Lebanon | 29 | Ohio | 3,778 | 3,802 | -0.16% | 1,847 | 2.04 |
| Park Layne | 30 | Ohio | 3,528 | 4,420 | -5.95% | 2,410 | 1.46 |
| Five Points | 31 | Ohio | 1,704 | 1,600 | 1.55% | 828 | 2.06 |
| Crystal Lakes | 32 | Ohio | 1,557 | 1,478 | -1.52% | 3,237 | 0.48 |
| West Alexandria | 33 | Ohio | 1,299 | 1,326 | -0.54% | 1,493 | 0.87 |
| Wright-Patterson AFB | 34 | Ohio | 992 | 2,414 | -22.07% | 100 | 9.87 |
| Farmersville | 35 | Ohio | 971 | 978 | -0.21% | 1,358 | 0.71 |
| Jacksonburg | 36 | Ohio | 888 | 54 | 30.59% | 44,400 | 0.02 |
| Gratis | 37 | Ohio | 827 | 841 | -0.48% | 853 | 0.97 |
| Drexel | 38 | Ohio | 631 | 2,320 | -36.77% | 289 | 2.18 |
| Phillipsburg | 39 | Ohio | 492 | 500 | -0.4% | 1,850 | 0.27 |
| Verona | 40 | Ohio | 392 | 400 | -0.51% | 860 | 0.46 |
| Donnelsville | 41 | Ohio | 253 | 259 | -0.78% | 796 | 0.32 |
| Brandt | 42 | Ohio | 111 | 383 | -31.9% | 115 | 0.97 |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Dayton is the largest city in Montgomery County.
Brandt is the smallest city in Montgomery County.
There are 42 cities in Montgomery County, Ohio.