COUNTY
Miami County
Ohio · 112,634 residents (2025 est.) · 407 sq mi
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Part of the Dayton metro area
The short version
Miami County is a county of 110,296 people in Ohio. That puts it in the top 6% of US counties for household income. 3% of residents were born outside the United States. 27% of adults hold a bachelor's degree or higher. Home values have more than doubled since 2000, reaching $229,100. Owners hold 73% of the housing stock.
At a glance
Lower income
below the US median
US median: $82,259
Older
median age 41.3
US median: 38.9
Less educated
27% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01
Population & growth
110,296
+12%since 2000
from 98,868 in 2000
112,634 in 2025 (Census Bureau estimate)
1990 – 2025
Land area
407 sq mi
Population, 1990 – 2024
2024110K
Age distribution, 2024
Under 55.6%(6,153)
5 to 95.7%(6,279)
10 to 147.5%(8,228)
15 to 196.2%(6,831)
20 to 245.4%(5,929)
25 to 3411.3%(12,423)
35 to 4413.1%(14,405)
45 to 5412.5%(13,767)
55 to 6413.5%(14,899)
65 to 7411.3%(12,473)
75 to 846.1%(6,712)
85 and over2%(2,197)
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy
$76,817
−4%inflation adjusted, since 2000
from $44,109 in 2000
US average: $82,259
1990 – 2024
Households earning $100K+
51.1%
+20.0 ptssince 2009
from 31.1% in 2009
US average: 53.3%
Workforce by industry, 2024
Retail trade23.1%
Information9.6%
Wholesale trade5.8%
Finance & insurance5.1%
Other services4.7%
Professional, scientific, technical4.6%
Public administration3.6%
Transportation & warehousing2.5%
Agriculture, forestry, fishing1.3%
Construction1.1%
Arts, entertainment, food1.1%
Education & health services0.5%
Manufacturing0.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03
Housing
$229,100
+12%inflation adjusted, since 2000
from $112,300 in 2000
US average: $376,019
1990 – 2024
3.0
+12%since 2009
from 2.7 in 2009
2009 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
50
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity
2000
White, non-Hispanic95.3%(94,262)
Black1.9%(1,923)
Hispanic / Latino0.7%(721)
Asian0.8%(770)
Other0%
2024
White, non-Hispanic89.9%(99,179)
Black1.8%(1,962)
Hispanic / Latino2.1%(2,366)
Asian1.9%(2,062)
Other4.3%(4,727)
24
+66%since 2009
from 14 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
21
−14%since 2020
from 25 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins
Detailed origins & ancestry
Hispanic origin
Mexican1.1%(1,215)
Puerto Rican0.5%(566)
Dominican0.2%(193)
South American0.2%(191)
Ecuadorian0.1%(105)
Spaniard0.1%(69)
Central American0.1%(57)
Salvadoran0%(51)
Peruvian0%(38)
Cuban0%(36)
Colombian0%(30)
Chilean0%(10)
Asian origin
Japanese0.7%(773)
Asian Indian0.5%(508)
Filipino0.3%(306)
Chinese0.2%(194)
Vietnamese0.1%(104)
Pakistani0%(45)
Thai0%(43)
Laotian0%(33)
Korean0%(22)
Ancestry
German27.9%(30,779)
English13.4%(14,732)
Irish12.1%(13,297)
American7.7%(8,455)
French3%(3,318)
Italian2.9%(3,246)
Scottish1.5%(1,678)
Polish1.4%(1,546)
Dutch1.3%(1,382)
Hungarian0.7%(766)
Welsh0.7%(726)
Scotch-Irish0.6%(632)
+ 32 more ancestry groups with data
Swiss0.5%(601)
French Canadian0.4%(409)
British0.4%(399)
Russian0.4%(389)
Swedish0.3%(295)
Norwegian0.2%(261)
Lithuanian0.2%(243)
Croatian0.2%(225)
Ukrainian0.2%(194)
Subsaharan African0.2%(169)
Portuguese0.1%(165)
Arab0.1%(110)
Lebanese0.1%(110)
Slovak0.1%(102)
Czech0.1%(89)
Turkish0.1%(89)
Canadian0.1%(73)
Greek0.1%(71)
Austrian0.1%(57)
Slovene0%(33)
West Indian0%(32)
Jamaican0%(32)
Danish0%(31)
Australian0%(30)
Finnish0%(29)
Bulgarian0%(26)
Serbian0%(23)
Romanian0%(21)
Iranian0%(18)
Belgian0%(15)
Macedonian0%(11)
Nigerian0%(11)
Section 05
Education
High school or higher
92.8%
+10.1 ptssince 2000
from 82.7% in 2000
US average: 89.6%
Section 06
Commute & transportation
Section 07
Work & employment
Women 20-64 in the labor force
76.1%
+1.7 ptssince 2020
from 74.4% in 2020
US average: 74.6%
Section 08
People & community
Computer in household
95.1%
+3.4 ptssince 2020
from 91.7% in 2020
US average: 95.5%
Marital status
Men 15+
Never married29.4%(12,984)
Married57.6%(25,470)
Widowed3.2%(1,400)
Divorced9.9%(4,384)
Women 15+
Never married22.3%(10,109)
Married54.8%(24,894)
Widowed9.8%(4,462)
Divorced13.1%(5,933)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage
Direct-purchase
12.8%
Unchangedsince 2020
from 12.8% in 2020
US average: 13.8%
VA health care
1.9%
−0.6 ptssince 2020
from 2.5% in 2020
US average: 2.2%
Any private
72.7%
−1.8 ptssince 2020
from 74.5% in 2020
US average: 67.1%
Any public
36.4%
+1.2 ptssince 2020
from 35.2% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)22.8%(1,346)
Gulf War (1990s)26.1%(1,541)
Vietnam era36.6%(2,164)
Korean War3.5%(209)
World War II0.3%(17)
Share of the 5,910 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper
Places similar to Miami County
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Pop 125,583
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Pop 106,649
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Pop 107,773
Rockdale County
Pop 98,416
Places similar to Miami CountyHead to head
Compare Miami County to nearby counties
MIAMI COUNTY VS
Shelby County
Income$73,978−4%
Home value$208,100−9%
Population48,065−57%
SEE FULL COMPARISON →
MIAMI COUNTY VS
Montgomery County
Income$66,139−14%
Home value$180,900−21%
Population539,598+379%
SEE FULL COMPARISON →
MIAMI COUNTY VS
Darke County
Income$64,486−16%
Home value$173,200−24%
Population51,520−54%
SEE FULL COMPARISON →
MIAMI COUNTY VS
Champaign County
Income$75,556−2%
Home value$204,000−11%
Population38,820−66%
SEE FULL COMPARISON →
Frequently asked
How many people live in Miami County, Ohio?
Miami County, Ohio has about 110,296 residents according to the 2024 American Community Survey.
What is the median household income in Miami County, Ohio?
The typical household in Miami County, Ohio earns about $76,817 a year. Half of households make more than that, and half make less.
Is Miami County, Ohio expensive?
In Miami County, Ohio, the median home is worth about $229,100, and the typical rent is about $966 a month.
How educated are people in Miami County, Ohio?
About 26.8% of adults age 25 and over in Miami County, Ohio hold a bachelor's degree or higher.
What is the poverty rate in Miami County, Ohio?
About 9.4% of people in Miami County, Ohio live below the federal poverty line.
Has Miami County, Ohio grown since 1990?
Yes, Miami County, Ohio has grown since 1990. The population has added about 17,114 residents, a change of about 18 percent over that period.
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Explore from here
23 census tracts (top 20 by population)
Census Tract 3801Census Tract 3653.02Census Tract 3151Census Tract 3550.01Census Tract 3653.01Census Tract 3501.01Census Tract 3651.02Census Tract 3401Census Tract 3901Census Tract 3650.02Census Tract 3001Census Tract 3450Census Tract 3150.01Census Tract 3153Census Tract 3651.01Census Tract 3201Census Tract 3150.02Census Tract 3650.01Census Tract 3301Census Tract 3501.0211 ZIP codes
ZIP 45373ZIP 45356ZIP 45371ZIP 45383ZIP 45318ZIP 45359ZIP 45337ZIP 45326ZIP 45312ZIP 45339ZIP 45361Up the hierarchy
All counties in OhioDATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024