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3 Cities and towns
Geography\nAccording to the U.S. Census Bureau, the county has a total area of 2,684 km² (1,036 mi²). 2,656 km² (1,025 mi²) of it is land and 28 km² (11 mi²) of it is water. The total area is 1.05% water.
Demographics\nAs of the census2 of 2000, there are 369,993 people, 149,813 households, and 104,569 families residing in the county. The population density is 139/km² (361/mi²). There are 161,058 housing units at an average density of 61/km² (157/mi²). The racial makeup of the county is 96.58% White, 2.01% Black or African American, 0.09% Native American, 0.52% Asian, 0.02% Pacific Islander, 0.15% from other races, and 0.64% from two or more races. 0.51% of the population are Hispanic or Latino of any race.
There are 149,813 households out of which 28.40% have children under the age of 18 living with them, 57.00% are married couples living together, 9.60% have a female householder with no husband present, and 30.20% are non-families. 26.90% of all households are made up of individuals and 13.30% have someone living alone who is 65 years of age or older. The average household size is 2.41 and the average family size is 2.93.
In the county, the population is spread out with 22.00% under the age of 18, 6.80% from 18 to 24, 27.50% from 25 to 44, 25.40% from 45 to 64, and 18.30% who are 65 years of age or older. The median age is 41 years. For every 100 females there are 93.10 males. For every 100 females age 18 and over, there are 89.70 males.
Cities and towns\n*Adamsburg\n*Allegheny Township\n*Arnold\n*Arona\n*Avonmore\n*Bell Township\n*Bolivar\n*Calumet-Norvelt\n*Cook Township\n*Crabtree\n*Delmont\n*Derry Township\n*Derry\n*Donegal Township\n*Donegal\n*East Huntingdon Township\n*East Vandergrift\n*Export\n*Fairfield Township\n*Grapeville\n*Greensburg\n*Harrison City\n*Hempfield Township\n*Herminie\n*Hunker\n*Hyde Park\n*Irwin\n*Jeannette\n*Latrobe\n*Laurel Mountain\n*Lawson Heights\n*Ligonier Township\n*Ligonier\n*Lower Burrell\n*Loyalhanna Township\n*Madison\n*Manor\n*McChesneytown-Loyalhanna\n*Monessen\n*Mount Pleasant Township\n*Mount Pleasant\n*Municipality of Murrysville\n*New Alexandria\n*New Florence\n*New Kensington\n*New Stanton\n*North Belle Vernon\n*North Huntingdon Township\n*North Irwin\n*Oklahoma\n*Penn Township\n*Penn\n*Rostraver Township\n*Salem Township\n*Scottdale\n*Seward\n*Sewickley Township\n*Slickville\n*Smithton\n*South Greensburg\n*South Huntingdon Township\n*Southwest Greensburg\n*St. Clair Township\n*Sutersville\n*Unity Township\n*Upper Burrell Township\n*Vandergrift\n*Washington Township\n*West Leechburg\n*West Newton\n*Youngstown\n*Youngwood