In 1684, William Penn's surveyor, Thomas Holme, devised a plan for a settlement called New Township. Eventually shortened to Newtown, the small village became the County Seat in 1725, and it remained the center of county government until 1813 when the courthouse was moved to Doylestown. Newtown Borough split from the surrounding Newtown Township and was incorporated in 1838. Today it is a community with a mix of colonial buildings and newer homes that retains the character of its history. State Street, which runs through the Borough and houses numerous shops and restaurants, is the site of Welcome Day each spring, an Antique Auto Show during the summer, and Market Day in the fall.