65 or older. The median age was 41. For every 100 females there were 94.5 males. For every 100 females 18 and older, there were 91.5 males. The median household income was $50,099, and the median family income was $59,153. Males had a median income of $40,783 versus $27,240 for females. The per capita income was $28,674. About 5.1% of families and 8.0% of the population were below the poverty line, including 9.3% of those under 18 and 6.2% of those 65 or older. Government The St. Johns County Board of County Commissioners is an elected five-member commission, which appoints a county administrator. The main environmental and agricultural body is the St. Johns County Soil and Water Conservation District, which works closely with other area agencies. St. Johns County Animal Control operates the St. Johns County Pet Adoption and Holding Center at 130 North Stratton Road. Voter registration According to the Secretary of State's office, Republicans are a majority of registered voters in St. Johns County. Education Primary and secondary education Public schools are run by the St. Johns County School District, headed by the St. Johns County School Board, an elected five-member board which appoints a superintendent to administer school operations. The system has grown considerably since 2000 to accommodate the county's rapid population growth. It is Florida's top-performing school district in Florida Comprehensive Assessment Test scores, the state's standardized test for public schools. The district also received the 2011 Energy Star Top Performer and Leader from the EPA. For the 2014–15 school year the district comprised: 18 elementary schools (K–5) 3 K-8 school (K–8) 7 middle schools (6–8) 7 high schools (9–12) 1 alternative center (K-12) 6 charter schools (including a vocational-technical college) 1 virtual school The St. Johns County School District has a robust special education department serving the needs of students with autism, cerebral palsy, and cognitive disabilities. The Florida School for the Deaf and Blind is a residential school for deaf and blind students, funded and operated by the state of Florida. The Catholic Diocese of St. Augustine operates St. Joseph Academy, a private high school in St. Augustine. St. Johns County schools have received a state government grade of "A" for their work with the students and FCAT grading from 2004 to 2014. Higher education St. Johns River State College, a state college in the Florida College System, has a campus in St. Johns