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Armstrong County is a county located in the U.S. State of Pennsylvania. As of 2000, the population is 72,392. It located northeast of Pittsburgh and Allegheny County. The county seat is Kittanning. The county was organized in 1800 and was named in honor of John Armstrong, Jr., who had represented Pennsylvania in the Continental Congress.
According to the U.S. Census Bureau, the county has a total area of 1,721 km˛ (664 mi˛). 1,694 km˛ (654 mi˛) of it is land and 27 km˛ (11 mi˛) of it is water. The total area is 1.58% water.
As of the census 2The following is a list of sources used in the creation of Wikipedia articles on various geographic topics and locations, such as cities, counties, states, and countries. These sources are cited within the thousands of articles which link to this page. of 2000, there are 72,392 people, 29,005 households, and 20,535 families residing in the county. The population densityIf you were linked from a country article: the density there is based on land area, see below Population density can be used as a measurement of any tangible item. However it is most frequently applied to living organisms. Population density is usually ex is 43/km˛ (111/mi˛). There are 32,387 housing units at an average density of 19/km˛ (50/mi˛). The racial makeup of the county is 98.32% White, 0.82% Black or African American, 0.09% Native American, 0.12% Asian, 0.02% Pacific Islander, 0.13% from other races, and 0.50% from two or more races. 0.43% of the population are Hispanic or Latino of any race.
There are 29,005 households out of which 29.50% have children under the age of 18 living with them, 57.90% are married couples living together, 9.00% have a female householder with no husband present, and 29.20% are non-families. 25.90% of all households are made up of individuals and 13.70% have someone living alone who is 65 years of age or older. The average household size is 2.46 and the average family size is 2.95.
In the county, the population is spread out with 22.90% under the age of 18, 7.20% from 18 to 24, 27.60% from 25 to 44, 24.20% from 45 to 64, and 18.00% who are 65 years of age or older. The median age is 40 years. For every 100 females there are 94.70 males. For every 100 females age 18 and over, there are 92.10 males.
The County was named after Brigadier-General John Armstrong.