Happy 233rd Birthday to the greatest county in Pennsylvania!!

Formed on September 26, 1789.  

Created on September 6, 1789, from part of Chester County, and named for the Delaware River, which in turn had been named for Lord de la Warr, governor of Virginia. Media, its county seat since 1850, was incorporated as a borough on March 11, 1850, and named for its central location in the county. Chester, its original county seat, was the county seat of Chester County before 1788, and the temporary capital of Pennsylvania, 1681–1682, before Philadelphia was laid out. The county adopted a home rule charter in May 1975.