Gibraltar is a census-designated place (CDP) in northern Robeson Township in southern Berks County, Pennsylvania, United States.

It is served by the Twin Valley School District and is across the Schuylkill River from Exeter.

[7] In the mid-18th Century, prior to being named Gibraltar, the place was known as Seideltown.

Descendants of Ernst Seidel (an emigrant from Sweden) operated ironworks (forges) in that area.

[9] Twin Valley Middle School and Twin Valley High School are in Caernarvon Township, Berks County, and have Elverson postal addresses.