Gulf coast but is now occurring most rapidly in areas north of Tampa. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (14.0%) is water. A portion of Eastern Pasco County contains rolling topography with elevations from , along with San Antonio and St. Leo. Adjacent counties Hernando County—north Sumter County—northeast Polk County—southeast Hillsborough County—south Pinellas County—southwest Climate The county has a humid subtropical climate (Cwa) and average temperatures in Dade City range from 59.2 °F in January to 82.1 °F in July and August while in Port Richey they range from 59.0 °F in January to 82.2 °F in August. PRISM Climate Group at Oregon State University Demographics As of the 2020 United States census, there were 561,891 people, 209,483 households, and 139,278 families residing in the county. As of the census of 2000, there were 344,765 people, 147,566 households, and 99,016 families residing in the county. The population density was . There were 173,717 housing units at an average density of 233 per square mile (90/km2). The racial makeup of the county was 93.70% White, 2.07% Black or African American, 0.35% Native American, 0.94% Asian, 0.03% Pacific Islander, 1.52% from other races, and 1.38% from two or more races. 5.69% of the population were Hispanic or Latino of any race. There were 147,566 households, out of which 23.50% had children under the age of 18 living with them, 54.60% were married couples living together, 8.90% had a female householder with no husband present, and 32.90% were non-families. 27.30% of all households were made up of individuals, and 15.90% had someone living alone who was 65 years of age or older. The average household size was 2.30 and the average family size was 2.77. In the county, the population was spread out, with 20.20% under the age of 18, 5.80% from 18 to 24, 24.10% from 25 to 44, 23.10% from 45 to 64, and 26.80% who were 65 years of age or older. The median age was 45 years. For every 100 females there were 92.20 males. For every 100 females age 18 and over, there were 89.10 males. The median income for a household in the county was $32,969, and the median income for a family was $39,568. Males had a median income of $30,974 versus $23,802 for females. The per capita income for the county