Blackrock is an

unincorporated community An unincorporated area is a region that is not governed by a local municipal corporation. Widespread unincorporated communities and areas are a distinguishing feature of the United States and Canada. Most other countries of the world either have ...

York County, Pennsylvania York County ( Pennsylvania Dutch: Yarrick Kaundi) is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 456,438. Its county seat is York. The county was created on August 19, 1749, from part of Lancaster ...

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

. Blackrock is located near the

Mason–Dixon line The Mason–Dixon line, also called the Mason and Dixon line or Mason's and Dixon's line, is a demarcation line separating four U.S. states, forming part of the borders of Pennsylvania, Maryland, Delaware, and West Virginia (part of Virginia ...

approx. 1 mile northwest of the town of Lineboro.

References

Unincorporated communities in York County, Pennsylvania Unincorporated communities in Pennsylvania {{YorkCountyPA-geo-stub