Haines City is a city in Polk County, Florida, United States. The population was 13,174 at the 2000 census and 20,535 at the 2010 census.
Haines City was platted in 1885, shortly after the South Florida Railroadreached the area. The city was first known as Clay Cut, but there was no railroad station. It is said that the inhabitants persuaded the railroad company to build a station by agreeing to rename their city Haines City, to honor a senior railroad official, Colonel Henry Haines.The City of Haines City was originally incorporated under the General Statutes of Florida as the Town of Haines City on February 23, 1914. The first state legislative act affecting the City was enacted on May 20, 1919, and, by Chapter 8272, it was reincorporated under a Mayor-Council form of government.