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3 Cities and towns
Geography\nAccording to the U.S. Census Bureau, the county has a total area of 1,439 km² (556 mi²). 1,434 km² (554 mi²) of it is land and 6 km² (2 mi²) of it is water. The total area is 0.40% water.
Demographics\nAs of the census2 of 2000, there are 43,602 people, 16,695 households, and 12,320 families residing in the county. The population density is 30/km² (79/mi²). There are 18,941 housing units at an average density of 13/km² (34/mi²). The racial makeup of the county is 98.54% White, 0.43% Black or African American, 0.12% Native American, 0.15% Asian, 0.01% Pacific Islander, 0.21% from other races, and 0.54% from two or more races. 0.69% of the population are Hispanic or Latino of any race.
There are 16,695 households out of which 33.20% have children under the age of 18 living with them, 61.60% are married couples living together, 7.80% have a female householder with no husband present, and 26.20% are non-families. 21.70% of all households are made up of individuals and 9.30% have someone living alone who is 65 years of age or older. The average household size is 2.58 and the average family size is 3.01.
In the county, the population is spread out with 25.50% under the age of 18, 7.40% from 18 to 24, 29.80% from 25 to 44, 25.10% from 45 to 64, and 12.30% who are 65 years of age or older. The median age is 38 years. For every 100 females there are 98.40 males. For every 100 females age 18 and over, there are 96.90 males.
Cities and towns\n*Blain\n*Bloomfield\n*Buffalo Township\n*Carroll Township\n*Centre Township\n*Duncannon\n*Greenwood Township\n*Howe Township\n*Jackson Township\n*Juniata Township\n*Landisburg\n*Liverpool Township\n*Liverpool\n*Marysville\n*Miller Township\n*Millerstown\n*New Buffalo\n*Newport\n*Northeast Madison Township\n*Oliver Township\n*Penn Township\n*Rye Township\n*Saville Township\n*Southwest Madison Township\n*Spring Township\n*Toboyne Township\n*Tuscarora Township\n*Tyrone Township\n*Watts Township\n*Wheatfield Township