Largo is the third largest city in Pinellas County, Florida, USA and is part of the Tampa Bay Area. Centrally located, it is the crossroads of the county. As of the 2000 census, the City had a total population of 69,371. As of 2004, the population recorded by the U.S. Census Bureau was 71,704. Largo was first incorporated in 1905. In 1913, it became the first municipality in Pinellas County to adopt a Council-Manager government.