Willow Oak is a census-designated place (CDP) in western Polk County, Florida, United States. The population was 4,917 at the 2000 census. It is part of the Lakeland–Winter Haven Metropolitan Statistical Area. Geography According to the United States Census Bureau, the CDP has a total area of , all land. Demographics As of the census of 2000, there were 4,917 people, 1,784 households, and 1,250 families residing in the CDP. The population density was . There were 1,932 housing units at an average density of . The racial makeup of the CDP was 83.67% White, 7.02% African American, 0.45% Native American, 0.49% Asian, 0.02% Pacific Islander, 6.45% from other races, and 1.91% from two or more races. Hispanic or Latino of any race were 19.95% of the population. There were 1,784 households, out of which 38.3% had children under the age of 18 living with them, 54.0% were married couples living together, 9.8% had a female householder with no husband present, and 29.9% were non-families. 23.8% of all households were made up of individuals, and 4.5% had someone living alone who was 65 years of age or older. The average household size was 2.76 and the average family size was 3.22. In the CDP, the population was spread out, with 28.9% under the age of 18, 11.1% from 18 to 24, 34.6% from 25 to 44, 18.7% from 45 to 64, and 6.8% who were 65 years of age or older. The median age was 30 years. For every 100 females, there were 106.3 males. For every 100 females age 18 and over, there were 107.9 males. The median income for a household in the CDP was $39,591, and the median income for a family was $45,545. Males had a median income of $31,819 versus $22,425 for females. The per capita income for the CDP was $16,729. About 7.2% of families and 13.4% of the population were below the poverty line, including 17.0% of those under age 18 and 8.4% of those age 65 or over. References Census-designated places in Polk County, Florida Census-designated places in Florida