List of Pennsylvania state historical markers

This is a list of Pennsylvania state historical markers which were first placed by the Commonwealth of Pennsylvania in 1914 and are currently overseen by the Pennsylvania Historical and Museum Commission (PHMC) as part of its Historical Markers Program. Since the modern PHMC program began in 1946, there have been over 2,000 historical sites in all 67 Pennsylvania counties that are marked by an official Pennsylvania state historical marker.

The following are approximate tallies of current marker listings in Pennsylvania by county. These counts are based on entries in the Pennsylvania Historical and Museum Commission's database as of November, 2014. There are yearly additions to the listings and some markers may be missing or stolen.

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