Polk City is a city in Polk County, Florida, United States. The population was 1,562 at the 2010 census. As of 2018, the population recorded by the U.S. Census Bureau is 2,422. It is part of the Lakeland–Winter Haven Metropolitan Statistical Area. History Polk City was incorporated as a Town in 1925, and changed by ordinance to the City of Polk City in 2005. The city was named after the county, itself named after James Knox Polk, the eleventh president of the United States. Geography According to the United States Census Bureau, the city has a total area of , all land. Polk City is located within the Central Florida Highlands area of the Atlantic coastal plain with a terrain consisting of flatland interspersed with gently rolling hills. Climate Polk City is located in the humid subtropical zone (Köppen climate classification: Cfa). Demographics As of the census of 2000, there were 1,516 people, 542 households, and 422 families residing in the town. The population density was . There were 596 housing units at an average density of . The racial makeup of the town was 94.13% White, 1.91% African American, 0.33% Native American, 0.40% Asian, 1.78% from other races, and 1.45% from two or more races. Hispanic or Latino of any race were 8.11% of the population. There were 542 households, out of which 39.1% had children under the age of 18 living with them, 55.4% were married couples living together, 14.9% had a female householder with no husband present, and 22.0% were non-families. 17.2% of all households were made up of individuals, and 5.2% had someone living alone who was 65 years of age or older. The average household size was 2.80 and the average family size was 3.07. In the town the population was spread out, with 29.8% under the age of 18, 7.4% from 18 to 24, 32.4% from 25 to 44, 19.9% from 45 to 64, and 10.6% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 97.4 males. For every 100 females age 18 and over, there were 95.6 males. The median income for a household in the town was $32,083, and the median income for a family was $36,705. Males had a median income of $28,158 versus $20,579 for females. The per capita income for the town was $14,108. About 13.6% of families