Shillington is a borough in Berks County, Pennsylvania, United States with a population of 5,059 at the 2000 census nestled amongst other suburbs outside of Reading. It is perhaps best known as the place where author John Updike lived until he was 13, and it is the basis for the town of Olinger that he wrote about in his fiction.
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.