Shillington is a borough in Berks County, Pennsylvania, United States with a population of 5,273 at the 2010 census nestled amongst other suburbs outside Reading. It is perhaps best known for being the location of the Homestead to Pennsylvania's First Governor, Thomas Mifflin and as the childhood home of American author John Updike. Many of Updike's stories take place in Shillington and its environs.
Shillington began in 1860 as part of Cumru Township, when local landowner and borough namesake Samuel Shilling sold some of his lots for residences. The area had an inn, originally built in 1762, called the Three Mile House because it was 3 miles (5 km) from Reading on the Lancaster Pike. The inn was a popular stop for farmers going to the city's markets, and later it sat near a horse racing track built by Aaron Einstein in 1868. A post office opened in Shillington in 1884. On August 18, 1908, the Quarter Session Court officially incorporated the borough of Shillington as a separate municipality from Cumru Township with a population of 450. Later that year Shillington elected its first official, Adam Rollman, as chief burgess. Borough council meetings were held in various locations over the years until the present town hall was completed in 1932.
Much of the borough's present land was occupied by Angelica Farm which would be established as an almshouse, or poorhouse, in 1824.