StatesFacts

Ohio

The Buckeye State

Ohio became the 17th state on March 1, 1803, formed from the Northwest Territory, although Congress did not formally ratify its admission until 1953. Its capital, Columbus, has been the seat of government since 1816 and is also the state's largest city. Ohio is known as the Buckeye State, after its state tree, and its swallowtail flag is the only state flag that is not a rectangle.

Facts verified October 23, 2026 against state law and official sources

Flag of Ohio
The flag of Ohio, adopted 1902 · About the flag
Capital
ColumbusCapital since 1816
Statehood
March 1, 180317th state
Population, 2025
11,900,5107th of 50
Area
44,826 sq mi34th largest · 116,098 km²
Largest city
Columbus938,396 people
Abbreviation
OHUS Postal Service code
Motto
With God, all things are possibleEnglish
Borders
5 statesLandlocked

The good river

Ohio takes its name from the Ohio River. The river’s name comes from a Seneca word, usually translated as “good river” or “great river,” and the state was named after the river.

Out of the Northwest Territory

Ohio was formed from the Northwest Territory. A state convention at Chillicothe petitioned for admission in November 1802, and Ohio became the 17th state on March 1, 1803. But Congress never formally voted to ratify its admission. The oversight surfaced as the state prepared for its 150th anniversary, and on August 7, 1953, President Dwight D. Eisenhower signed a law making Ohio’s statehood official, retroactive to March 1, 1803.

Three capitals

Chillicothe, the seat of the Northwest Territory government since 1800, became Ohio’s first state capital. It sat on Zane’s Trace and the Scioto River and was then the largest town in the state. The legislature moved to Zanesville in 1810, returned to Chillicothe in 1812, and in 1816 settled in Columbus, then a small settlement but closer to the center of the state, where local landowners had donated land for the capitol grounds. Columbus has grown into Ohio’s largest city. Its Greek Revival Statehouse took from 1839 to 1861 to finish. The capital page tells the story.

The Buckeye State

Ohio’s nickname comes from the Ohio buckeye, a tree that grew widely in early Ohio and has been the state tree since 1953. No law formally adopts the nickname, but the flag law says the white “O” on the flag suggests it, and the official pledge to the flag promises “respect and loyalty” to “the buckeye state.”

That flag, adopted in 1902, is a swallowtail pennant, or burgee, the only state flag that is not a rectangle. Its 17 stars mark Ohio as the 17th state. See the flag page for what every part means.

A motto in court

Ohio’s motto, “With God, all things are possible,” was adopted in 1959 after a Cincinnati schoolboy proposed it. In the late 1990s the ACLU of Ohio challenged it in federal court. The case ended in 2001, when the full Sixth Circuit Court of Appeals ruled the motto constitutional.

Cardinals, carnations and tomatoes

Ohio has 29 official state symbols. The northern cardinal has been the state bird since 1933, and the scarlet carnation, adopted in 1904 in memory of President William McKinley, the state flower. Ohio loves its tomatoes: tomato juice became the state beverage in 1965 and the tomato the state fruit in 2009. The list also honors Ohio’s history, from the Adena pipe and the Newark Earthworks to the Wright brothers’ 1905 Flyer III, the state airplane since 2025, and the state rock song is “Hang On Sloopy.” See every symbol on the Ohio symbols page.

Land and people

Ohio covers 44,826 square miles, 34th among the states, including nearly 4,000 square miles of water. It had about 11.9 million residents in 2025, 7th in the country. Ohio borders Pennsylvania, West Virginia, Kentucky, Indiana and Michigan, and across Lake Erie it shares a water boundary with Canada. Columbus, with about 938,000 people, is the largest city, followed by Cleveland, Cincinnati, Toledo and Akron.

Ohio state symbols

All 29 official symbols

The capital: Columbus

The capital of Ohio is Columbus, where the General Assembly has met since December 1816. Ohio's first capital was Chillicothe, with a two-year stop in Zanesville, but lawmakers chose Columbus, then only a small settlement, because it lay near the center of the state. Today it is Ohio's largest city, and its Greek Revival Statehouse, finished in 1861, has a drum-shaped cupola instead of a dome.

The history of Columbus as capital

  1. 1800–1810Chillicothe
  2. 1810–1812Zanesville
  3. 1812–1816Chillicothe
  4. 1816–todayColumbus

Where Ohio is

Ohio shares a border with 5 states: Indiana, Kentucky, Michigan, Pennsylvania and West Virginia.

Land area
40,861 sq mi
Water area
3,965 sq mi
Population density
291.2 people per sq mi (10th)
INPAWVKYMI

Ohio trivia

Questions about Ohio

What is the capital of Ohio?
Columbus, the capital since 1816 and the state's largest city. Chillicothe and Zanesville were earlier capitals.
Why is Ohio called the Buckeye State?
For the Ohio buckeye, a tree that grew widely in early Ohio and has been the state tree since 1953. No law formally adopts the nickname, but the flag law and the flag pledge both use it.
When did Ohio become a state?
On March 1, 1803. Congress never formally voted to ratify the admission at the time, so in 1953 it passed a law, signed by President Eisenhower, confirming Ohio's statehood retroactive to that date.
What does Ohio mean?
The state is named for the Ohio River, whose name comes from a Seneca word usually translated as "good river" or "great river."
What is Ohio's state motto?
'"With God, all things are possible," adopted in 1959. A federal appeals court upheld it against a constitutional challenge in 2001.'
Photo credits (5)

Sources