Sinking Spring is a borough in Berks County, Pennsylvania, United States. The population was 4,008 at the 2010 census. Sinking Spring was given its name for a spring located in the center of town. The water in this spring would sink into the ground from time to time, giving the illusion that it had disappeared. The Sinking Spring area is served by the Wilson School District.
Sinking Spring is located at 40°19′29″N 76°1′21″W (40.324725, -76.022386).
According to the United States Census Bureau, the borough has a total area of 1.4 square miles (3.6 km2), all of it land.
The Indians who first inhabited this area were the Lenni Lenape Indians (meaning the "original people"). The Tribe in this immediate area was the Minsi or Wolf tribe. Indian inhabitants in the Sinking Spring area supposedly called the main spring as the sunken spring. White settlers later called it the "sinking spring."
Penn Avenue is the main thoroughfare of Sinking Spring. There is a stone monument in the 3800 block of Penn Avenue.