Located in Dauphin County, Pennsylvania, Harrisburg was founded in 1785. Pennsylvania's state capital since 1812. Three Mile Island nuclear accident (1979) occurred just 10 miles away.
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Founded1785|Population50,000|Peak50,000(2024)|CountyDauphin County
Top 10 Most Important Events for Harrisburg, Pennsylvania
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1785Founded: Harrisburg was founded in Dauphin County.
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1812State Capital: PA capital since 1812.
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1979Three Mile Island: Nuclear accident nearby.
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2010Modern Era: Harrisburg continued to develop as part of the region, with new infrastructure and community amenities.