The county was originally created as Berkeley Precinct. It was renamed Perquimans Precinct around 1684 and gained county status in 1739.[5] The largest community and county seat is Hertford.
According to theU.S. Census Bureau, the county has a total area of 328.93 square miles (851.9 km2), of which 247.17 square miles (640.2 km2) is land and 81.76 square miles (211.8 km2) (24.86%) is water.[6]
At the2000 census,[14] there were 11,368 people, 4,645 households, and 3,376 families residing in the county. Thepopulation density was 46 people per square mile (18 people/km2). There were 6,043 housing units at an average density of 24 units per square mile (9.3 units/km2). The racial makeup of the county was 70.82%White, 27.99%Black orAfrican American, 0.18%Native American, 0.21%Asian, 0.03%Pacific Islander, 0.13% fromother races, and 0.64% from two or more races. 0.60% of the population wereHispanic orLatino of any race. There were 4,645 households, of which 28.20% had children under the age of 18 living with them, 56.50% weremarried couples living together, 12.60% had a female householder with no husband present, and 27.30% were non-families. 24.10% of all households were made up of individuals, and 11.90% 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 2.86.
23.00% of the population were under the age of 18, 6.80% from 18 to 24, 24.40% from 25 to 44, 26.60% from 45 to 64, and 19.30% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 91.30 males. For every 100 females age 18 and over, there were 87.50 males.
Themedian household income was $29,538 and the median family income was $35,212. Males had a median income of $27,251 compared with $18,728 for females. Theper capita income for the county was $15,728. About 13.90% of families and 17.90% of the population were below thepoverty line, including 27.20% of those under age 18 and 15.80% of those age 65 or over.