Baltimore is an independent city located in the state of Maryland in the United States of America. As of 2005, the population of Baltimore City was 641,943 and the Baltimore Metropolitan Area (MSA) had approximately 2.6 million residents. Baltimore is also part of the Baltimore-Washington Metropolitan Area (CMSA) of approximately 8.1 million residents. Baltimore is the largest city in Maryland; its metropolitan area is the 19th largest in the country.