Hollo, Pennsylvania

Hollo is an unincorporated community in Northampton County, Pennsylvania. It is part of the Lehigh Valley metropolitan area, which had a population of 861,899 and was the 68th most populous metr…
Hollo is an unincorporated community in Northampton County, Pennsylvania. It is part of the Lehigh Valley metropolitan area, which had a population of 861,899 and was the 68th most populous metropolitan area in the U.S. as of the 2020 census.

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Data from: Wikipedia