Miami County, Ohio Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Miami County, OH Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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B
Health Around averageHealthier than 77% of counties in Ohio
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B
Income Around averageWealthier than 76% of counties in Ohio
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D
Education Well below averageBetter educated than 75% of counties in Ohio
Source: Map AI Methodology
Population: density and quick facts
| Metric | Miami County | Ohio Avg | U.S. Average |
|---|---|---|---|
| Population | 110,296 | 11,799,428 | 337,468,954 |
| Population density (per sq mi) | 269.1 | 263.2 | 86.4 |
| Population growth (%/yr) | 0.75% | 0.23% | 0.59% |
| Median age | 42.0 | 38.5 | 37.3 |
| Households | 44,898 | 4,857,236 | 130,235,071 |
Population in Miami County grew by 9.2% from 2009 to 2024, reaching 110,296 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Miami County is Gen X, aged 45–60, at 20.9% of residents. That is 0.8 points above Ohio as a whole.
- Gen Z 13–28 21,139 19.2% -1.7 pts
- Millennials 29–44 22,316 20.2% -0.9 pts
- Gen X 45–60 23,106 20.9% +0.8 pts
- Boomers 61–79 21,133 19.2% +1.1 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Ohio, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 50.0% of the people living in Miami County and men 50.0%.
- Women 50.0% Ohio 50.8%
- Men 50.0% Ohio 49.2%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Miami County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Miami County has a the economy index of B, which means it is quite prosperous.
| Metric | Miami County | Ohio Avg | U.S. Average |
|---|---|---|---|
| Median household income | $76,958 | $71,509 | $80,455 |
| Income growth (%/yr) | 4.64% | 4.38% | 4.80% |
| Unemployment rate | 3.1% | 4.8% | 5.2% |
The median household income in Miami County is about 8% higher than in Ohio.
Housing
| Metric | Miami County | Ohio Avg | U.S. Average |
|---|---|---|---|
| Median home price | $223,077 | $139,044 | $248,835 |
| Median rent | $965 | $1,033 | $1,407 |
| Homeownership rate | 73.4% | 67.2% | 65.2% |
The median home price in Miami County is about 19.3 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $965 per month for that long.
Commute Time & Mobility
Commuters in Miami County spend about 40 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 167 hours, about 7.0 full days, spent commuting.
| Metric | Miami County | Ohio Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 20.1 | 21.1 | 22.4 |
| Round-trip commute (min) | 40.1 | 42.2 | 44.8 |
| Yearly time spent (hours) | 167 | 176 | 187 |
| Estimated yearly cost | $5,184 | $5,447 | $5,790 |
| Work from home | 10.2% | 13.0% | 15.0% |
| Highway traffic (vehicles/day) | 11,404 | 8,648 | 8,813 |
| Local road traffic (vehicles/day) | 1,128 | 1,212 | 1,355 |
Fastest commutes among counties in
Ohio:
Hancock County (15.3 min), Van Wert County (15.5 min), Mercer County (16.0 min).
Slowest:
Morgan County (32.5 min), Vinton County (32.0 min), Brown County (32.0 min).
The average commute time in Miami County is 20 minutes, shorter than the 21 minutes in Ohio.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Miami County has a education index of D, which means it is barely educated.
| Metric | Miami County | Ohio Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 23.2% | 28.1% | 31.6% |
| Average household size | 2.44 | 2.37 | 2.53 |
Highest education index among counties in
Ohio:
Delaware County (0.4), Warren County (0.4), Greene County (0.3).
Lowest:
Holmes County (0.1), Vinton County (0.2), Noble County (0.2).
Health
Miami County has a health index of B, which means it is quite healthy.
| Metric | Miami County | Ohio Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 77.7 | 77.0 | 78.3 |
| Self-rated poor health | 14.8% | 17.2% | 16.3% |
| Smokers | 23.4% | 24.3% | 19.0% |
Highest health index among counties in
Ohio:
Delaware County (0.8), Union County (0.8), Warren County (0.8).
Lowest:
Adams County (0.8), Holmes County (0.8), Scioto County (0.8).
Miami County, OH Compared With Nearby Counties
Miami County, OH is the 3rd largest of the 6 counties compared here, 110,296 residents against a local median of 51,593. Where Miami County, OH breaks from the counties next to it is median home price, sitting 38% above the local median of $161,588 at $223,077.
Median household income tells the same story from another angle: $76,958 against a local median of $66,795, 15% above it. The one measure here that carries a verdict is median household income, and at 15% above the local median it puts Miami County, OH at the better end of the local range. The counties themselves spread $197,855 on median home price, so Miami County, OH sits at one end of an already wide local range rather than apart from it. Miami County, OH has the 3rd highest median home price of the 6 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Miami County, OH | 110,296 | $76,958 #1/6 | $223,077 #3/6 | 20.1 min #5/6 |
| Shelby County, OH | 47,929 | $73,782 | $131,785 | 16.3 min |
| Montgomery County, OH | 535,982 | $66,795 | $128,931 | 18.9 min |
| Darke County, OH | 51,593 | $64,114 | $326,785 | 18.3 min |
| Clark County, OH | 135,157 | $63,493 | $161,588 | 19.0 min |
| Champaign County, OH | 38,804 | $75,502 | $252,679 | 22.7 min |
Frequently Asked Questions
Common questions about Miami County, Ohio.
What is the population of Miami County, Ohio?
About 110,296 people live in Miami County, Ohio, in 44,898 households of 2.4 people on average. The median age is 42.0, so residents are older than the U.S. median of 37.3 by about 5 years.
Is Miami County, Ohio mostly urban or rural?
Averaged over its land area, Miami County, Ohio has 269 people per square mile, a density typical of a mix of suburbs, small towns and farmland. That is about 3.1 times the U.S. average of 86.
Can a typical household afford a home in Miami County, Ohio?
The median home costs 2.9 times the median household income ($223,077 against $76,958), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $965 a month takes about 15% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is it hard to find a job in Miami County, Ohio?
Unemployment in Miami County, Ohio is only 3.1%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
How educated are people in Miami County, Ohio?
23.2% of adults in Miami County, Ohio hold a bachelor's degree or higher (about 1 in 4), well below the U.S. share of 31.6%.
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