Baltimore (ˈbɔːltᵻmɔːr , locally: ˌbɔːldɪˈmɔːr or ˈbɔːlmər ) is the most populous city in the U.S. state of Maryland. With a population of 585,708 at the 2020 census, it is the 30th-most populous city in the United States. Baltimore was designated an independent city by the Constitution of Maryland in 1851, and today it is the most populous independent city in the nation. As of the 2020 census, the population of the Baltimore metropolitan area was estimated to be 2,838,327, making it the 20th-largest metropolitan area in the country. When combined with the larger Washington, D.C. metropolitan area, the Washington–Baltimore combined statistical area (CSA) has a 2020 U.S. census population of 9,973,383, the third-largest in the country.
The land that is now Baltimore was used as hunting ground by Paleo-Indians. In the early 1600s, the Susquehannock began to hunt there. People from the Province of Maryland established the Port of Baltimore in 1706 to support the tobacco trade with Europe, and established the Town of Baltimore in 1729.
During the American Revolutionary War, the Second Continental Congress, fleeing Philadelphia prior to the city's fall to British troops, moved their deliberations to Henry Fite House on West Baltimore Street from December 20, 1776 to February 27, 1777, permitting Baltimore to serve briefly as the nation's capital before the capital returned to Independence Hall in Philadelphia on March 5, 1777.
In the mid-18th century, the first printing press and newspapers were introduced to Baltimore by Nicholas Hasselbach and William Goddard.
The Battle of Baltimore was a pivotal engagement during the War of 1812, culminating in the failed British bombardment of Fort McHenry, during which Francis Scott Key wrote a poem that would become "The Star-Spangled Banner", which was eventually designated as the American national anthem in 1931. During the Pratt Street Riot of 1861, the city was the site of some of the earliest violence associated with the American Civil War.