Ohio Population 2018


As of 2018, Ohio has an estimated population of 11.69 million. 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 intersting history, and despite being only the 34th largest state, it is the 7th most populous and 10th most densely populated in the country with an estimated 2018 population of 11.69 million. Still, it has one of the lowest growth rates in the nation, growing at a rate of just 0.67%, which ranks 43th 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.

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.

Ohio Population 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 Population Chart

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.

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

Population Data via US Census

Ohio Growth Rate

Ohio Population Rank

Year Pop % Change

Ohio Facts

Ohio Population in 2018Source: JSF306

  • 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 permnanet 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 Population Density by County

Franklin County

  • Population1,269,998
  • Density2385.51 per sq km
  • Growth Since 20108.89%
  • State Rank1
  • % of State10.93%

Ohio Population Growth Rate by County

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 Pyramid 2018

0k20k40k60k80kOhio Male Population0k20k40k60k80kOhio Female Population80757065605550454035302520151050

To compare Ohio to other states, click here.

Population by Race

Race Population
Black or African American1,443,510
Two or More Races324,432
Some Other Race109,073
American Indian and Alaska Native18,081
Native Hawaiian and Other Pacific Islander4,031

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%).

Race Data via US Census (2016 ACS 1-Year Survey)

Languages Spoken in Ohio

Language Population Percentage
Pennsylvania Dutch28,7050.26%
Kru, Ibo, Yoruba8,6400.08%

This chart shows the top 10 languages that are spoken at home in Ohio. The data comes from the most recent release of the American Community Survey (ACS).

Ohio Economy

High school graduate or higher 88.8%
Bachelor's degree or higher 25.6%
With a Disability 9.7%
Persons Without Health Insurance 9.8%
In Civilian Labor Force 63.5%
In Civilian Labor Force (Female) 59.1%
Food Services Sales $20,652,777
Health Care Revenue $80,915,693,000
Manufacturers Shipments $313,629,976,000
Merchant Wholesaler Sales $155,426,023,000
Total Retail Sales $153,553,997,000
Total Retail Sales per Capita $13,301
Mean Travel Time to Work 23.1 minutes
Median Household Income $48,849
Per Capita Income (past 12 months) $26,520
Persons in Poverty 15.8%

This chart shows the employment and labor force participation rates in Ohio for residents over 16 years of age. The 2015 unemployment rate is 5.2% and the labor force participation rate is 63.4%.

Ohio Business

Total Nonemployer Establishments 757,764
All firms 904,814
Men-owned Firms 510,078
Women-owned Firms 306,824
Minority-owned Firms 122,653
Nonminority-owned Firms 759,569
Veternan-owned Firms 91,316
Nonveteran-owned Firms 776,193

Ohio Housing

Housing Units 5,127,508
Owner Occupied Housing Rate 66.9%
Median Value Owner Occupied Housing Units $129,600
Median Monthly Owner Costs (w/Mortgage) $1,274
Median Monthly Owner Costs (no mortgage) $442
Median Gross Rent $729
Building Permits 20,047
Households 4,570,015
Persons per Household 2.46 persons
Living in Same House 1 Year Ago 85.4%
Language Other than English Spoken at Home 6.7%
Data Sources
  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)