Havertown is a residential suburban unincorporated community in Haverford Township, Delaware County, Pennsylvania, United States, approximately 9 miles west of the center of Philadelphia. Havertown's ZIP Code is 19083 and "Havertown" is a postal address. The name "Havertown" does not appear until the advent of the ZIP Code in the early 1960s. Prior to the ZIP Code's introduction, each constituent community was known by its local name: Bon Air, Brookline, Penfield, Beechwood, Llanerch, Manoa, Oakmont, Coopertown, Ardmore. Under William Penn's land divisions these communities were part of the Welsh Tract and comprised the area known as Harford, a Welsh contraction of Haverford.
Haverford Township was founded by Welsh Quakers in 1681 on land purchased from William Penn. The settlers named their new home after Haverfordwest (Hwlffordd), Wales, UK. The township is home to many historic sites. The Grange Estate, entertained the Revolutionary War figures George Washington and General Lafayette. Nitre Hall, along Karakung (Cobb's) Creek, supplied the United States with over 800,000 pounds of gunpowder during the War of 1812. Leedom Hall was the probable home to William Howell the founder of Haverford Mills which date from 1688. Other Havertown sites listed on the National Register of Historic Places include the Federal School and Lawrence Cabin.