According to the U.S. Census Bureau, the county has a total area of, of which is land and is water.
Time zones
By way of the Intracoastal Waterway, Gulf County is one of a small number of counties in the United States to be under two time zones, Eastern and Central in this case.
As of the census of 2000, there were 13,332 people, 4,931 households, and 3,535 families residing in the county. The population density was. There were 7,587 housing units at an average density of 14 per square mile. The racial makeup of the county was 79.89% White, 16.94% Black or African American, 0.65% Native American, 0.40% Asian, 0.05% Pacific Islander, 0.53% from other races, and 1.55% from two or more races. 2.03% of the population were Hispanic or Latino of any race. There were 4,931 households out of which 28.40% had children under the age of 18 living with them, 55.50% were married couples living together, 11.90% had a female householder with no husband present, and 28.30% were non-families. 25.50% of all households were made up of individuals and 11.40% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.87. In the county, the population was spread out with 21.70% under the age of 18, 6.80% from 18 to 24, 29.40% from 25 to 44, 26.00% from 45 to 64, and 16.20% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 114.60 males. For every 100 females age 18 and over, there were 116.70 males. The median income for a household in the county was $30,276, and the median income for a family was $36,289. Males had a median income of $27,539 versus $20,780 for females. The per capita income for the county was $14,449. About 13.70% of families and 16.70% of the population were below the poverty line, including 20.80% of those under age 18 and 14.10% of those age 65 or over.
Politics
Once heavily Democratic, in 2016 Gulf County transitioned to a majority Republican county. As of June 2020 Gulf County has 10,300 registered active voters. The Republican party holds a 52% to 34% advantage over the Democratic Party. The remaining voters are registered with No Party Affiliation or are scattered across a number of minority parties. The County Commission is a five member board consisting of three Republicans and two Democrats. Republicans control five of the six elected Constitutional Offices in the county including Sheriff, Superintendent of Schools, Property Appraiser, Clerk of the Court and Supervisor of Elections. The office of Tax Collector is the only Constitutional Office filled by a Democrat. At the state level, Gulf County is represented by District 3 Democratic Senator Bill Montford and District 7 Republican Representative Jason Shoaf. Gulf County is a part of Florida’s 2nd Congressional District and is represented by Neal Dunn.
