Columbia

There is more than one place called Columbia:

Canada

 * British Columbia, a Canadian province

United States

 * Columbia (California) - a city in the state of California
 * Columbia (Connecticut) - a town in Connecticut
 * Columbia (Kentucky) - a city in the commonwealth of Kentucky
 * Columbia (Maryland) - a city in the state of Maryland
 * Columbia (Missouri) - a city in the state of Missouri
 * Columbia (Tennessee)
 * Columbia County (New York) - a county in the state of New York
 * Columbia (South Carolina) - the capital of South Carolina
 * Columbia County (Florida) - a county in North Central Florida.
 * Columbia County (Oregon) - a county in Oregon
 * Columbia County (Pennsylvania) - a county in Pennsylvania
 * Columbia County (Washington) - a county in the Palouse region of Washington state
 * District of Columbia, a US territory

Beware also the possible misspelling of Colombia, the name of a country in South America.