Montgomery County, Ohio | |
|---|---|
 Current Montgomery County Courthouse | |
 Flag  Seal  Logo | |
 Location within the U.S. state ofOhio | |
 Ohio's location within theU.S. | |
| Coordinates:39°45′N84°17′W / 39.75°N 84.29°W /39.75; -84.29 | |
| Country |  United States |
| State |  Ohio |
| Founded | May 1, 1803[1] |
| Named after | Richard Montgomery |
| Seat | Dayton |
| Largest city | Dayton |
| Area | |
• Total | 464 sq mi (1,200 km2) |
| • Land | 462 sq mi (1,200 km2) |
| • Water | 2.8 sq mi (7.3 km2) 0.6% |
| Population (2020) | |
• Total | 537,309 |
• Estimate (2024) | 537,443 |
| • Density | 1,160/sq mi (449/km2) |
| Time zone | UTC−5 (Eastern) |
| • Summer (DST) | UTC−4 (EDT) |
| Congressional district | 10th |
| Website | www |
Montgomery County is in the southwestern part of theU.S. state ofOhio. At the2020 census, the population was 537,309,[2] making it the fifth-most populous county in Ohio. Thecounty seat isDayton.[3] The county wasnamed in honor ofRichard Montgomery, anAmerican Revolutionary War general, who was killed in1775 while attempting to captureQuebec City, Canada.[4] Montgomery County is part of the Dayton, Ohio,Metropolitan Statistical Area.
The county has a total area of 464 square miles (1,200 km2), of which 462 square miles (1,200 km2) is land and 2.8 square miles (7.3 km2) (0.6%) is water.[5]
| Census | Pop. | Note | %± |
|---|---|---|---|
| 1810 | 7,722 | — | |
| 1820 | 15,999 | 107.2% | |
| 1830 | 24,362 | 52.3% | |
| 1840 | 31,938 | 31.1% | |
| 1850 | 38,218 | 19.7% | |
| 1860 | 52,230 | 36.7% | |
| 1870 | 64,006 | 22.5% | |
| 1880 | 78,550 | 22.7% | |
| 1890 | 100,552 | 28.0% | |
| 1900 | 130,146 | 29.4% | |
| 1910 | 163,763 | 25.8% | |
| 1920 | 209,532 | 27.9% | |
| 1930 | 273,481 | 30.5% | |
| 1940 | 295,480 | 8.0% | |
| 1950 | 398,441 | 34.8% | |
| 1960 | 527,080 | 32.3% | |
| 1970 | 606,148 | 15.0% | |
| 1980 | 571,697 | −5.7% | |
| 1990 | 573,809 | 0.4% | |
| 2000 | 559,062 | −2.6% | |
| 2010 | 535,153 | −4.3% | |
| 2020 | 537,309 | 0.4% | |
| 2024 (est.) | 537,443 | [6] | 0.0% |
| U.S. Decennial Census[7] 1790-1960[8] 1900-1990[9] 1990-2000[10] 2010-2020[2] | |||
| Race / Ethnicity(NH = Non-Hispanic) | Pop 1980[11] | Pop 1990[12] | Pop 2000[13] | Pop 2010[14] | Pop 2020[15] | % 1980 | % 1990 | % 2000 | % 2010 | % 2020 |
|---|---|---|---|---|---|---|---|---|---|---|
| White alone (NH) | 468,421 | 460,568 | 424,183 | 388,917 | 360,396 | 81.94% | 80.27% | 75.87% | 72.67% | 67.07% |
| Black or African American alone (NH) | 94,025 | 101,421 | 110,454 | 111,105 | 112,818 | 16.45% | 17.68% | 19.76% | 20.76% | 21.00% |
| Native American orAlaska Native alone (NH) | 669 | 1,019 | 1,182 | 1,096 | 937 | 0.12% | 0.18% | 0.21% | 0.20% | 0.17% |
| Asian alone (NH) | 3,214 | 5,757 | 7,267 | 9,195 | 12,714 | 0.56% | 1.00% | 1.30% | 1.72% | 2.37% |
| Native Hawaiian orPacific Islander alone (NH) | x[16] | x[17] | 176 | 163 | 244 | x | x | 0.03% | 0.03% | 0.05% |
| Other race alone (NH) | 1,209 | 505 | 949 | 924 | 2,588 | 0.21% | 0.09% | 0.17% | 0.17% | 0.48% |
| Mixed race or Multiracial (NH) | x[18] | x[19] | 7,755 | 11,576 | 26,433 | x | x | 1.39% | 2.16% | 4.92% |
| Hispanic or Latino (any race) | 4,159 | 4,539 | 7,096 | 12,177 | 21,179 | 0.73% | 0.79% | 1.27% | 2.28% | 3.94% |
| Total | 571,697 | 573,809 | 559,062 | 535,153 | 537,309 | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% |
As of the2010 census, there were 535,153 people, 223,943 households, and 138,060 families living in the county.[20] The population density was 1,159.5 inhabitants per square mile (447.7/km2). There were 254,775 housing units at an average density of 552.0 per square mile (213.1/km2).[21] The racial makeup of the county was 73.9% white, 20.9% black orAfrican American, 1.7%Asian, 0.2% American Indian, 0.8% from other races, and 2.4% from two or more races. Those ofHispanic or Latino origin made up 2.3% of the population.[20] In terms of ancestry, 24.9% wereGerman, 12.8% wereIrish, 9.7% wereAmerican, and 8.8% wereEnglish.[22]
Of the 223,943 households, 29.7% had children under the age of 18 living with them, 41.6% were married couples living together, 15.3% had a female householder with no husband present, 38.4% were non-families, and 32.2% of all households were made up of individuals. The average household size was 2.33, and the average family size was 2.94. The median age was 39.2 years.[20]
The median income for a household in the county was $43,965, and the median income for a family was $56,559. Males had a median income of $45,680 versus $34,991 for females. The per capita income for the county was $24,828. About 11.7% of families and 15.7% of the population were below thepoverty line, including 22.7% of those under age 18 and 8.7% of those aged 65 or over.[23]
As of thecensus of 2000, there were 559,062 people, 229,229 households, and 146,935 families living in the county. Thepopulation density was 1,211 people per square mile (468 people/km2). There were 248,443 housing units at an average density of 538 per square mile (208/km2). The racial makeup of the county was 76.57%White, 19.86%Black orAfrican American, 0.23%Native American, 1.31%Asian, 0.04%Pacific Islander, 0.49% fromother races, and 1.51% from two or more races. 1.27% of the population wereHispanic orLatino of any race.
There were 229,229 households, out of which 29.60% had children under the age of 18 living with them, 46.30% weremarried couples living together, 13.80% had a female householder with no husband present, and 35.90% were non-families. 30.40% of all households were made up of individuals, and 10.10% had someone living alone who was 65 years of age or older. The average household size was 2.37, and the average family size was 2.96.
In the county, the population was spread out, with 24.70% under the age of 18, 9.70% from 18 to 24, 29.00% from 25 to 44, 22.90% from 45 to 64, and 13.70% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 92.30 males. For every 100 females age 18 and over, there were 88.60 males.
Themedian income for a household in the county was $40,156, and the median income for a family was $50,071. Males had a median income of $38,710 versus $27,297 for females. Theper capita income for the county was $21,743. About 8.30% of families and 11.30% of the population were below thepoverty line, including 15.60% of those under age 18 and 8.20% of those age 65 or over.
Montgomery County has been a slightlyDemocratic-leaningswing county since theCivil War. After voting consistently Democratic in presidential elections from 1992 to 2012, RepublicanDonald Trump narrowly defeated DemocratHillary Clinton in the county in2016. The lastDemocrat to win the county by double digits wasLyndon B. Johnson in1964, while the lastRepublican to do so wasGeorge H. W. Bush in1988. Overall, the county long-term has been trending red since 1992.
| Year | Republican | Democratic | Third party(ies) | |||
|---|---|---|---|---|---|---|
| No. | % | No. | % | No. | % | |
| 2024 | 125,566 | 48.95% | 126,767 | 49.41% | 4,211 | 1.64% |
| 2020 | 129,034 | 47.94% | 135,064 | 50.18% | 5,066 | 1.88% |
| 2016 | 123,909 | 47.68% | 122,016 | 46.95% | 13,951 | 5.37% |
| 2012 | 124,841 | 46.81% | 137,139 | 51.42% | 4,727 | 1.77% |
| 2008 | 128,679 | 46.12% | 145,997 | 52.32% | 4,355 | 1.56% |
| 2004 | 138,371 | 48.97% | 142,997 | 50.60% | 1,216 | 0.43% |
| 2000 | 109,792 | 47.53% | 114,597 | 49.61% | 6,598 | 2.86% |
| 1996 | 95,391 | 41.30% | 115,469 | 50.00% | 20,097 | 8.70% |
| 1992 | 104,751 | 40.02% | 108,017 | 41.27% | 48,952 | 18.70% |
| 1988 | 131,596 | 57.48% | 95,737 | 41.82% | 1,610 | 0.70% |
| 1984 | 137,053 | 58.97% | 94,016 | 40.45% | 1,333 | 0.57% |
| 1980 | 101,443 | 45.49% | 105,110 | 47.13% | 16,456 | 7.38% |
| 1976 | 100,223 | 47.40% | 106,468 | 50.35% | 4,745 | 2.24% |
| 1972 | 120,998 | 58.02% | 82,231 | 39.43% | 5,323 | 2.55% |
| 1968 | 84,766 | 40.93% | 96,082 | 46.39% | 26,272 | 12.68% |
| 1964 | 71,979 | 36.24% | 126,633 | 63.76% | 0 | 0.00% |
| 1960 | 109,602 | 52.71% | 98,325 | 47.29% | 0 | 0.00% |
| 1956 | 107,278 | 58.45% | 76,270 | 41.55% | 0 | 0.00% |
| 1952 | 91,905 | 53.51% | 79,860 | 46.49% | 0 | 0.00% |
| 1948 | 60,048 | 43.48% | 76,879 | 55.66% | 1,187 | 0.86% |
| 1944 | 63,336 | 43.47% | 82,367 | 56.53% | 0 | 0.00% |
| 1940 | 57,866 | 40.20% | 86,084 | 59.80% | 0 | 0.00% |
| 1936 | 44,742 | 35.02% | 76,430 | 59.81% | 6,606 | 5.17% |
| 1932 | 49,267 | 46.60% | 51,270 | 48.50% | 5,180 | 4.90% |
| 1928 | 71,279 | 64.53% | 38,517 | 34.87% | 665 | 0.60% |
| 1924 | 50,845 | 62.61% | 21,860 | 26.92% | 8,505 | 10.47% |
| 1920 | 46,493 | 51.67% | 38,433 | 42.72% | 5,049 | 5.61% |
| 1916 | 19,683 | 41.99% | 24,339 | 51.92% | 2,853 | 6.09% |
| 1912 | 10,341 | 26.15% | 15,544 | 39.31% | 13,653 | 34.53% |
| 1908 | 20,069 | 47.09% | 20,566 | 48.26% | 1,980 | 4.65% |
| 1904 | 22,144 | 58.70% | 13,933 | 36.93% | 1,648 | 4.37% |
| 1900 | 19,606 | 53.55% | 16,236 | 44.34% | 772 | 2.11% |
| 1896 | 18,333 | 53.56% | 15,540 | 45.40% | 359 | 1.05% |
| 1892 | 13,197 | 46.88% | 14,067 | 49.97% | 888 | 3.15% |
| 1888 | 12,491 | 47.89% | 13,142 | 50.38% | 451 | 1.73% |
| 1884 | 11,524 | 50.12% | 11,326 | 49.26% | 143 | 0.62% |
| 1880 | 9,726 | 48.28% | 10,332 | 51.28% | 89 | 0.44% |
| 1876 | 7,921 | 46.82% | 8,971 | 53.02% | 27 | 0.16% |
| 1872 | 6,998 | 49.17% | 7,183 | 50.47% | 50 | 0.35% |
| 1868 | 6,502 | 51.54% | 6,113 | 48.46% | 0 | 0.00% |
| 1864 | 5,554 | 51.21% | 5,291 | 48.79% | 0 | 0.00% |
| 1860 | 4,974 | 50.07% | 4,710 | 47.41% | 251 | 2.53% |
| 1856 | 4,038 | 46.34% | 4,285 | 49.17% | 391 | 4.49% |
| Year | Republican | Democratic | Third party(ies) | |||
|---|---|---|---|---|---|---|
| No. | % | No. | % | No. | % | |
| 2024 | 112,324 | 44.58% | 130,464 | 51.78% | 9,146 | 3.63% |
| Office | Officeholder | Party |
|---|---|---|
| Montgomery County Commissioner | Judy Dodge | Democratic |
| Montgomery County Commissioner | Mary McDonald | Republican |
| Montgomery County Commissioner | Carolyn Rice | Democratic |
| Auditor | Karl Keith | Democratic |
| Clerk of Courts | Mike Foley | Republican |
| Coroner | Kent Harshbarger | Republican |
| Engineer | Andrew Shahan | Democratic |
| Prosecutor | Mathias Heck Jr. | Democratic |
| Recorder | Lori Kennedy | Republican |
| Sheriff | Rob Streck | Republican |
| Treasurer | John McManus | Republican |
| District | Representative | Party |
|---|---|---|
| 36 | Andrea White | Republican |
| 37 | J. Thomas Young | Republican |
| 38 | Desiree Tims | Democratic |
| 39 | Phil Plummer | Republican |
| 40 | Rodney Creech | Republican |
| District | Senator | Party |
|---|---|---|
| 5 | Stephen Huffman | Republican |
| 6 | Willis Blackshear | Democratic |
| District | Representative | Party |
|---|---|---|
| 10 | Mike Turner | Republican |
| Senator | Party |
|---|---|
| Bernie Moreno | Republican |
| Jon Husted | Republican |
The following public school districts are located partially or entirely in Montgomery County:[26]
There is also a public independent (not a part of any school district)STEM school:
The following private high schools are located in Montgomery County:
Places adjacent to Montgomery County, Ohio | ||||||||||||||||
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Municipalities and communities ofMontgomery County, Ohio,United States | ||
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| Cities |  | |
| Villages | ||
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| CDPs | ||
| Other communities | ||
| Ghost towns | ||
| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
39°45′N84°17′W / 39.75°N 84.29°W /39.75; -84.29
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| National | |
| Other | |
