County · Ohio
Miami County, Ohio
Miami County, Ohio. Miami County had 112,634 residents in 2025 by the Census Bureau's estimate, up 3.5% since 2020, faster than Ohio (+0.9%). It holds 27 places (14 cities, villages and boroughs, 12 towns and townships and 1 census-designated) and 23 census tracts. GEOID 39109.
Miami County is one of the 3 counties of the Dayton-Kettering-Beavercreek, OH metropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
112,634
Census Bureau estimate (no margin published)
2020 Census count: 108,774 · ACS 2020-2024: 110,296
Median household income
$76,817
±$2,939 (90% margin)
Ohio: $71,389
Median home value
$229,100
±$7,621 (90% margin)
Ohio: $214,800
Median gross rent
$966
±$34 (90% margin)
Ohio: $1,034
How many people live in Miami County, and is it growing?
The 2020 Census counted 108,774 residents in Miami County. The Census Bureau estimates 112,634 for July 1, 2025, up 3.5% since 2020, faster than Ohio (+0.9%). The 2020-2024 American Community Survey puts the population at 110,296 over 407 square miles of land.
| Measure | Miami County | Ohio | Change since 2015-2019 |
|---|---|---|---|
| Total population | 110,296 | 11,810,293 | +4,925 |
| Households | 44,906±399 | 4,863,191 | +3,863 |
| Average household size | 2.44±0.02 | 2.37 | −0.10 |
| Housing units | 47,226±66 | 5,292,391 | +2,906 |
Miami County's population since 2000
From 98,868 in 2000 to 112,634 in 2025: up 13.9%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Miami County?
Miami County holds 27 places: 14 cities, villages and boroughs (incorporated places), 12 towns and townships (county subdivisions with their own government) and 1 census-designated place. The largest is Concord Township, Miami County with 32,597 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Concord Township, Miami County | 31,417 | $74,188 |
|---|---|---|
| Troy | 26,305 | $68,830 |
| Piqua | 20,354 | $67,796 |
| Monroe Township, Miami County | 16,114 | $79,243 |
| Tipp City | 10,274 | $78,098 |
| Union Township, Miami County | 9,569 | $69,263 |
| Newberry Township | 6,395 | $71,641 |
| Huber Heights | 43,439 | $79,131 |
| Bethel Township, Miami County | 4,758 | $109,849 |
| West Milton | 4,697 | $62,885 |
| Newton Township, Miami County | 3,516 | $87,889 |
| Covington | 2,548 | $59,750 |
| Staunton Township | 2,439 | $111,458 |
| Springcreek Township | 2,144 | $68,707 |
| Elizabeth Township, Miami CountyGEOID 3910924836 | 1,686 | $125,144 |
| Lostcreek Township | 1,606 | $96,667 |
| Brown Township, Miami CountyGEOID 3910909498 | 1,585 | $100,417 |
| Washington Township, Miami CountyGEOID 3910981466 | 1,503 | $80,246 |
| Pleasant Hill | 1,241 | $72,330 |
| Bradford | 1,796 | $64,139 |
| Fletcher | 451 | $75,417 |
| Laura | 398 | $78,125 |
| BrandtGEOID 3908308 | 282 | not published |
| CasstownGEOID 3912462 | 270 | $51,250 |
| PotsdamGEOID 3964430 | 225 | $66,250 |
| Ludlow FallsGEOID 3945374 | 175 | $60,250 |
| Union | 6,859 | $73,353 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Miami County?
The median resident of Miami County is 41.3 years old; 22.9% are under 18 and 19.4% are 65 or older. The largest group is non-Hispanic white residents at 89.9%, then non-Hispanic residents of two or more races at 3.9%. 2.8% of residents were born outside the United States.
| Measure | Miami County | Ohio | Change since 2015-2019 |
|---|---|---|---|
| Median age | 41.3±0.5 | 39.7 | no clear change |
| Under 18 years | 22.9% | 22.0% | – |
| 65 years and over | 19.4%±0.2 pts | 18.3% | – |
| Hispanic or Latino (any race) | 2.1% | 4.8% | +0.4 pts |
| White alone, not Hispanic | 89.9%±0.3 pts | 75.8% | −2.4 pts |
| Black or African American alone, not Hispanic | 1.8%±0.4 pts | 12.0% | no clear change |
| Asian alone, not Hispanic | 1.9%±0.2 pts | 2.5% | +0.7 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.9%±0.4 pts | 4.3% | – |
| Some other race alone, not Hispanic | 0.4%±0.2 pts | 0.4% | – |
| Born outside the United States | 2.8%±0.4 pts | 5.2% | +0.9 pts |
| Speak a language other than English at home (age 5+) | 3.3%±0.6 pts | 8.0% | – |
| Civilian veterans (age 18+) | 7.0%±0.7 pts | 6.6% | – |
| With a disability | 12.6%±0.8 pts | 14.4% | – |
| No health insurance coverage | 4.7%±0.8 pts | 6.4% | no clear change |
| High school graduate or higher (age 25+) | 92.8%±0.8 pts | 91.8% | – |
| Bachelor's degree or higher (age 25+) | 26.8%±1.5 pts | 31.5% | +3.5 pts |
| Graduate or professional degree (age 25+) | 10.7%±1.0 pts | 12.2% | – |
| Moved from another state in the past year | 1.2%±0.3 pts | 1.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Miami County earn?
Half of Miami County's 44,906 households earn less than $76,817 a year (±$2,939), against $71,389 in Ohio. In 2015-2019 it was $75,123 in 2024 dollars; the margins of error cannot tell the two periods apart. 9.4% of residents live below the poverty line.
| Measure | Miami County | Ohio | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $76,817±$2,939 | $71,389 | no clear change |
| Mean household income | $96,707±$2,611 | $96,990 | – |
| Per capita income | $40,297±$946 | $40,552 | +$1,833 |
| People below the poverty line | 9.4%±1.3 pts | 13.3% | no clear change |
| Children under 18 below the poverty line | 10.9%±2.7 pts | 17.8% | no clear change |
| Households receiving SNAP | 7.7%±0.9 pts | 12.5% | – |
| Households with a broadband subscription | 92.3%±0.8 pts | 90.1% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Miami County?
Owners occupy 73.4% of Miami County's occupied homes and renters 26.6%. The median owner-occupied home is valued at $229,100 by its owner (±$7,621). The median renter pays $966 a month including utilities, and 34.4% of renters pay 35% or more of their income on rent.
| Measure | Miami County | Ohio | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $229,100±$7,621 | $214,800 | +$42,773 |
| Median gross rent | $966±$34 | $1,034 | no clear change |
| Renters paying 35% or more of income on rent | 34.4%±3.9 pts | 37.3% | no clear change |
| Median monthly owner costs, with a mortgage | $1,453±$35 | $1,517 | – |
| Owner-occupied homes | 73.4%±1.5 pts | 67.2% | +2.3 pts |
| Housing units | 47,226±66 | 5,292,391 | +2,906 |
| Homeowner vacancy rate | 0.3%±0.2 pts | 0.8% | – |
| Rental vacancy rate | 2.6%±1.6 pts | 4.4% | – |
| Single-family detached homes | 79.4%±1.2 pts | 68.8% | – |
| Mobile homes | 1.1%±0.6 pts | 3.4% | – |
| Built 2020 or later | 1.6%±0.4 pts | 1.1% | – |
| Built 1939 or earlier | 21.5%±1.2 pts | 19.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Miami County building?
Builders took permits for 340 new housing units across Miami County in 2025 (290 single-family), 3.0 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Miami County get to work?
80.3% of Miami County's workers drive alone and 10.2% work from home. The average trip to work takes 22.0 minutes. The unemployment rate in 2020-2024 averaged 3.1%.
| Measure | Miami County | Ohio | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 64.1%±1.0 pts | 63.1% | – |
| Unemployment rate | 3.1%±0.8 pts | 4.8% | −1.8 pts |
| Drove alone to work | 80.3%±1.6 pts | 75.1% | – |
| Carpooled | 6.3%±1.0 pts | 7.5% | – |
| Public transportation | 0.2%±0.2 pts | 1.0% | – |
| Walked | 1.6%±0.5 pts | 2.0% | – |
| Worked from home | 10.2%±1.1 pts | 13.0% | +7.3 pts |
| Mean travel time to work | 22.0 min±0.8 | 23.4 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Miami County's census tracts?
Miami County is divided into 23 census tracts. Among those with a reliable estimate, median household income runs from $50,368 (Tract 3652) to $126,843 (Tract 3653.02).
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Miami County compare with Ohio's other counties?
| Measure | Rank |
|---|---|
| Population | 25th of 88 |
| Growth 2020-2025 | 11th of 88 |
| Residents per square mile | 22nd of 88 |
| Median household income | 16th of 88 |
| Median home value | 17th of 88 |
| Median gross rent | 21st of 88 |
| Poverty rate | 67th of 88 |
| Bachelor's degree or higher | 26th of 88 |
| Median age | 43rd of 88 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Miami County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.