<P> On February 19 , 1803 , U.S. President Thomas Jefferson signed an act of Congress that approved Ohio 's boundaries and constitution . However , Congress had never passed a resolution formally admitting Ohio as the 17th state . The current custom of Congress declaring an official date of statehood did not begin until 1812 , with Louisiana 's admission as the 18th state . Although no formal resolution of admission was required , when the oversight was discovered in 1953 , Ohio congressman George H. Bender introduced a bill in Congress to admit Ohio to the Union retroactive to March 1 , 1803 , the date on which the Ohio General Assembly first convened . At a special session at the old state capital in Chillicothe , the Ohio state legislature approved a new petition for statehood that was delivered to Washington , D.C. on horseback . On August 7 , 1953 ( the year of Ohio 's 150th anniversary ) , President Eisenhower signed a congressional joint resolution that officially declared March 1 , 1803 , the date of Ohio 's admittance into the Union . </P>
<P> On February 19 , 1803 , U.S. President Thomas Jefferson signed an act of Congress that approved Ohio 's boundaries and constitution . However , Congress had never passed a resolution formally admitting Ohio as the 17th state . The current custom of Congress declaring an official date of statehood did not begin until 1812 , with Louisiana 's admission as the 18th state . Although no formal resolution of admission was required , when the oversight was discovered in 1953 , Ohio congressman George H. Bender introduced a bill in Congress to admit Ohio to the Union retroactive to March 1 , 1803 , the date on which the Ohio General Assembly first convened . At a special session at the old state capital in Chillicothe , the Ohio state legislature approved a new petition for statehood that was delivered to Washington , D.C. on horseback . On August 7 , 1953 ( the year of Ohio 's 150th anniversary ) , President Eisenhower signed a congressional joint resolution that officially declared March 1 , 1803 , the date of Ohio 's admittance into the Union . </P>
when did ohio become part of the united states
when did ohio become part of the united states
March 1 , 1803
March 1 , 1803