Clinton County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 37,450. Its county seat is Lock Haven. Clinton County comprises the Lock Haven, PA Micropolitan Statistical Area, which is also included in the Williamsport-Lock Haven, PA Combined Statistical Area. The county is part of the Central Pennsylv…Clinton County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 37,450. Its county seat is Lock Haven. Clinton County comprises the Lock Haven, PA Micropolitan Statistical Area, which is also included in the Williamsport-Lock Haven, PA Combined Statistical Area. The county is part of the Central Pennsylvania region of the commonwealth.
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