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. It switched back and forth from "town" to "city" a few times, and became a city again in 1974. It was an exporter of agricultural products until the 1960s when the influx of people began to transform it into a bedroom community. From 1905 to 2005, Largo grew in area from 9/16ths of a square mile to about 17 square miles (44 km2), and in population from about 300 people to more than 70,000. Largo began as a rural farming community and became the third largest city in Florida's most densely populated county. Largo is also a sister city to Tosayamada, Kochi, Japan. In 2007, Largo had been named a National Arbor Day Tree City seventeen years in a row.
The original inhabitants of the Largo area were the Tocobaga. They are also known as the Safety Harbor culture from their archeological remains near present day Safety Harbor. The Spanish came to Florida in the 16th century. In the 18th century, the Tocobaga had been virtually destroyed after years of exposure to European diseases, Spanish settlement efforts and warfare between Spain and England. The Largo area, like the rest of Pinellas County, was largely deserted. In 1763, Spain transferred sovereignty of Florida to England. In 1783, Florida fell to Spanish sovereignty once again until it was transferred to the United States in 1821. By 1845, a surveyor noted Lake Tolulu, apparently located south of East Bay Drive and roughly where the Largo Central Park Nature Preserve is today. Among the first homesteaders in the Largo area were the families of James and Daniel McMullen ca 1852.