Ohio Population 2021

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Ohio sits in the US Midwest, linking the country's Northeast to the Midwest. The state has one of the most central locations in the country with the 10th largest highway network. It's also just a day's drive within 50% of all of North America's population.

Ohio has an interesting history, and despite being only the 34th largest state, it is the 7th most populous and 10th most densely populated in the country. Still, it has one of the lowest growth rates in the nation, growing at a rate of just 0.67%, which ranks 43rd in the country.

The last official Census occurred in 2010, showing Ohio had a population of 11,536,504. This number has increased slightly to 11,548,087 in 2015, representing a very slight growth rate.

Ohio Area and Population Density

While Ohio's growth is slow, it's still ahead of the rest of the country. Ohio has a population density of 282.3 people per square mile, ranking 10th in the nation, with a total land area of 44,825 square miles, which ranks 34th.

Ohio's population is spread throughout the state with many major cities. Columbus, the capital, has the highest population with 850,000 residents, followed by Cleveland (388,072), Cincinnati (298,550), Toledo (298,550) and Akron (197,542).

Interestingly, the cities are wildly different when it comes to demographics and growth. While Columbus is growing rapidly at a rate of 10% every decade, Cleveland, by comparison, is losing people at an alarming rate. In 1950, more than 900,000 people lived in Cleveland, and its population is declining at a rate similar to decaying cities like Detroit.

The most populated county in Ohio is Franklin County at 1,291,981 residents in its boundaries, with Cuyahoga County coming in at a close second place with 1,248,514 residents. However, Cuyahoga has a 2% rate of loss of population in recent years.

Ohio Gender and Religion Statistics

The median age across the population in Ohio is approximately 39.3 years of age. When it comes to the ratio of females to males, Ohio has 51.1% females and 48.9% males.

In terms of preferred religions through the state's population, 73% of the population is affiliated with a Christian based faith, 4% are affiliated with non-Christian based faiths, and 22% are unaffiliated with any faith in particular.

Ohio Boundary, Census, and Statehood History

Ohio was part of the Territory Northwest of the River Ohio, established in 1787 and commonly known as the Northwest Territory. Besides present-day Ohio, it included what are now Indiana, Illinois, Michigan, Wisconsin, and northeastern Minnesota. In 1800, with the creation of Indiana Territory, the Northwest Territory was reduced essentially to present-day Ohio, a small portion of southeastern Indiana, and the eastern half of lower Michigan. Ohio became a separate territory in 1802 and was admitted as a State on March 1, 1803, with its present boundaries except for a much-disputed strip along the northwestern border. This strip was governed by Michigan Territory until finally ceded to Ohio in 1836.

In 1790 the Northwest Territory had no census coverage. The 1800 census enumerated population in much of present-day Ohio and in a portion of southeastern Indiana; the total excludes the then Wayne County, nearly all of whose population was in present-day Michigan. The 1810, 1820, and 1830 censuses covered all of present-day Ohio except for the disputed northwestern strip, which was enumerated as part of Michigan.

Ohio Demographics

According to the most recent ACS, the racial composition of Ohiowas:

  • White: 81.30%
  • Black or African American: 12.41%
  • Two or more races: 2.88%
  • Asian: 2.22%
  • Other race: 0.97%
  • Native American: 0.20%
  • Native Hawaiian or Pacific Islander: 0.03%

Ohio Population History

In 1800, the population of Ohio was recorded at 45,365 but like most states in the country, an explosion in numbers was just over the horizon. Ten years later in 1810, the Census of that year showed that the figures had leaped by over 400% to 230,760. This was the biggest rise in Ohio population on a census by census basis but further impressive growth was to follow through the decades.

By the start of the 20th century, the number of people in Ohio had climbed to 4,157,545 and impressive percentage increases were experienced for much of the rest of the century. From 1970 onwards, however, growth started to slow down gradually, although it is still increasing, as evidenced by the rise reported in the 2010 census.

Ohio Population Growth

The question for the 2020 Census is whether Ohio's population can rise above 12 million. If a similar rise to that seen between 2000 and 2010 occurs, then it won’t make it. But population statistics in Ohio are sometimes a bit up and down – in the 10 years between 1990 and 2000, population rose by more than 4%, and if that rise was replicated between 2010 and 2020, it might just make it past 12 million in time for the next census.

Ohio Population Projections

It's currently estimated that Ohio will continue its very slow growth, not even breaking 11.7 million between 2020 and 2030.

Ohio has one of the lowest Hispanic populations in the country based on percentages. The majority of Ohio's Hispanic residents are Mexican American and live in the Columbus and Toledo. It is ranked among the bottom 10 states when it comes to the percentage of Hispanics compared to the total population of the state. Ohio is ranked 17th out of 50 states for its African American population, which primarily reside in the state's major metropolitan areas. Approximately 4.1% of the state's residents were foreign-born.

Today, nearly one-third of Ohio's population under the age of 1 belongs to a minority group. The largest ancestry groups are: German (26.5%), Irish (14.5%), English (9.0%), Slavic countries including Poland, Russia and Croatia (8.0%), Italian (6.4%), French (2.5%) and Scottish (1.9%).

Ohio Growth Rate

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Ohio Population Rank

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Ohio Population 2021

  • Delaware, Miami, Shawnee and Wyandot Indian tribes first inhabited the land that is now Ohio.
  • Marietta was founded in 1788, and it was the first permanent settlement in Ohio. It was named after Marie Antoinette.
  • The first capital of Ohio was Chillicothe. The capital was then moved to Zanesville before transferring back to Chillicothe. In 1816, Columbus was established, and it is now the capital of the state.
  • Moses Cleaveland founded the city of Cleveland in 1796. In the 1930s, a newspaper changed the spelling to Cleveland to fit within its masthead, and the new name stuck.
  • Cincinnati was the birthplace of the first ambulance service back in 1865.
  • Ohio is the birthplace of seven US presidents.
  • Ohio has the only non-rectangular state flag in the country.

Ohio Facts

Using data from the 2010 Census and estimates from the Census Bureau taken in 2015, Ohio's counties have shown population increases and decreases through the 5-year period. The highest population increase was recorded in the central county of Delaware, which had a growth rate of 10.2%. The neighboring county of Franklin, located to the south of Delaware County, had the next highest rate of growth at 7.32%, followed by the southwestern county of Warren at 5.13%. Other counties, including Woods, Holmes, Union, and Miami saw smaller growth rates.

Some counties in the state saw population declines, with the majority of the largest declines being reported along the eastern border of the state. Carroll County had the largest loss in population during the 5-year period, at 3.52%. Other counties that had smaller populations in 2015 when compared to 2010 include Scioto at 3.4%, Jefferson at 3.25%, and Gallia at 3.03%, amongst others.

Ohio Population Growth Rate by County

Ohio Population Density by County

Population by Race

Race Population Percentage
Black or African American1,446,19312.41%
Two or More Races335,4262.88%
Some Other Race112,8360.97%
American Indian and Alaska Native22,8160.20%
Native Hawaiian and Other Pacific Islander3,8800.03%

Ohio Population by Race

Ohio Population Pyramid $2021


Ohio Median Age







Ohio Adults

There are 9,050,387 adults, (1,941,294 of whom are seniors) in Ohio.

Ohio Age Dependency


Age Dependency Ratio


Old Age Dependency Ratio


Child Dependency Ratio

Ohio Sex Ratio







Ohio Population by Age

Ohio Renter vs Owner Occupied by Household Type

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Ohio Household Types

Type Owner Renter
Non Family51%49%


Rate of Home Ownership

Ohio Households and Families

Type Count Average Size Owned
Non Family1,723,178151


Average Family Size


Average Household Size


Ohio Households by Type

Education Attained Count Percentage
Less Than 9th Grade221,3762.78%
9th to 12th Grade546,0026.85%
High School Graduate2,634,99733.04%
Some College1,626,96520.40%
Associates Degree691,1118.67%
Bachelors Degree1,401,60917.57%
Graduate Degree853,71710.70%

Ohio Educational Attainment by Sex (over 25)

Ohio Educational Attainment by Race

Race Total High School Bachelors
2+ Races119,002105,30229,547
Other Race62,93945,0729,466
Native American15,98612,9222,776

The highest rate of high school graduation is among white people with a rate of 91.62%.

The highest rate of bachelors degrees is among asian people with a rate of 60.77%.

Ohio Educational Attainment by Race

Name Average Male Female
Less Than 9th Grade$22,881$27,785$16,905
High School Graduate$31,277$38,701$24,197
Some College$36,098$44,753$30,274
Bachelors Degree$53,703$65,129$45,039
Graduate Degree$69,233$83,408$60,914


Average Earnings


Average Male


Average Female

Ohio Earnings by Educational Attainment

Ohio Language by Age


Ohio Language

92.81% of Ohio residents speak only English, while 7.19% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 2.62% of the population.

Ohio Language

Ohio Poverty by Race

Name Total In Poverty Poverty Rate


Overall Poverty Rate


Male Poverty Rate


Female Poverty Rate

Poverty in Ohio

The race most likely to be in poverty in Ohio is Islander, with 32.90% below the poverty level.

The race least likely to be in poverty in Ohio is White, with 10.75% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.46%. Among those working part-time, it was 18.22%, and for those that did not work, the poverty rate was 21.30%.

Ohio Poverty

Name Poverty
Less Than 9th Grade27.22%
High School13.27%
Some College10.48%
Bachelors or Greater3.78%

Ohio Poverty Rate by Education

Rate Poverty
Female Unemployed40.86%
Male Unemployed32.47%
Female Employed8.18%
Male Employed5.13%

Ohio Poverty Rate by Employment Status and Sex

Ohio Income by Household Type

Name Median Mean
Married Families$87,575$109,123
Non Families$33,281$46,828

Income by Household Type

Ohio Marital Status

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Marriage Rates


Overall Marriage Rate


Male Marriage Rate


Female Marriage Rate

Ohio Married by Age and Sex


Ohio Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

Ohio Marital Status by Race

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Ohio Marital Status



Number of Veterans


Male Veterans


Female Veterans

War Veterans
First Gulf War125,961
Second Gulf War107,005
World War II27,488

Ohio Veterans by War

Age Group Veterans
65 to 74197,276
35 to 54163,458
55 to 64127,997
18 to 3454,059

Ohio Veterans by Age

Name Veterans % of Total
2+ Races9,7445.91%
Other Race2,4453.21%
Native American1,6339.05%

Ohio Veterans by Race

Ohio Veterans by Education



Veteran Poverty Rate


Veteran Disability Rate

Ohio Veterans by Education



Labor Force Participation


Employment Rate


Unemployment Rate

Ohio Employment by Age


Ohio Employment by Race


Ohio Employment by Education

Origin of Non-Citizens


Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens



Born in Ohio


Native Born


Foreign Born


Non Citizen



Place of Birth

95.41% of Ohio residents were born in the United States, with 74.91% having been born in Ohio. 2.22% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Ohio Place of Birth

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)