Share of the population by age and sex, five-year groups

Population of Ohio, 2010–2025 · click to pick a year
Estimates up to 2019 are built on the 2010 Census, those from 2020 on the 2020 Census. A line that steps up or down between 2019 and 2020 reflects this re-basing, not a sudden change in population.

Year

-5 -1   2025  +1 +5

11,900,510 people lived in Ohio on July 1, 2025: the 7th-largest population among the 50 states and the District of Columbia. The median age was 40.1 years (United States: 39.4); more residents are 65 or older (20.2%) than under 15 (17.4%): an ageing, top-heavy pyramid. There were 96.2 men for every 100 women. Since 2010 the population has grown by 3.1%. Source: U.S. Census Bureau, Population Estimates Program, Vintage 2025 estimates (resident population on July 1; public domain). Median age, shares, dependency ratios and rankings are calculated by PopulationPyramid.net from these estimates; the Census Bureau does not endorse this site.

Key indicators, 2025
Population
11,900,510
Rank by population
7th of 51
Median age
40.1
Men per 100 women
96.2
Under 15
17.4%
15–64
62.4%
65 and over
20.2%
Child dependency
28.0
Old-age dependency
32.3
Change since 2010
+3.1%
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2025
AgeMenWomenTotalShare
0-4330,022317,907647,9295.4%
5-9359,155343,969703,1245.9%
10-14371,511353,618725,1296.1%
15-19387,023369,449756,4726.4%
20-24393,076379,284772,3606.5%
25-29404,713392,634797,3476.7%
30-34385,683383,820769,5036.5%
35-39380,005383,924763,9296.4%
40-44364,706369,392734,0986.2%
45-49339,461344,388683,8495.7%
50-54334,762344,504679,2665.7%
55-59346,978361,643708,6216.0%
60-64366,592394,162760,7546.4%
65-69353,568395,228748,7966.3%
70-74292,010337,710629,7205.3%
75-79213,394264,402477,7964.0%
80-84118,689164,079282,7682.4%
85+94,812164,237259,0492.2%
How Ohio compares with similar-sized states, 2025
RankStateResidentsRelative
4 New York 20,002,427
5 Pennsylvania 13,059,432
6 Illinois 12,719,141
7 Ohio 11,900,510
8 Georgia 11,302,748
9 North Carolina 11,197,968
10 Michigan 10,127,884
Frequently asked questions about Ohio's population
What is the population of Ohio?
Ohio had an estimated 11,900,510 residents on July 1, 2025, according to the U.S. Census Bureau, Population Estimates Program. That ranks 7th among the 51 states and the District of Columbia.
What is the median age in Ohio?
The median age in Ohio was 40.1 years in 2025, the 18th oldest of the 51 states and DC. That is 0.7 years older than the national median of 39.4.
How many people in Ohio are 65 or older?
About 2,398,129 residents of Ohio (20.2%) were 65 or older in 2025, against 17.4% under 15 and 62.4% aged 15 to 64.
What does the population pyramid of Ohio show?
In 2025, Ohio: more residents are 65 or older (20.2%) than under 15 (17.4%): an ageing, top-heavy pyramid. There were 96.2 men for every 100 women.
How fast is the population of Ohio changing?
The population of Ohio grew by 3.1% between 2010 and 2025, and by 0.3% in the last year.
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