Penndel remained a farming region until 1876 when the Philadelphia Reading Railroad began service, and the Langhorne train station was established.

In 1878 Thomas Eastburn & Co. advertised 130 Building Lots in the area calling it "The Eden of Bucks County.

"[3] Slowly individual homes and small businesses were built in close proximity to the railroad, and the town expanded from there.

It began as the Eden Post Office, was incorporated as the borough of Attleboro on June 22, 1899;[4] the name changed to South Langhorne in February 1911,[5] and finally to Penndel on November 17, 1947.

[6] Today Penndel has both a thriving industrial district and residential areas with both new and historically significant homes.

According to the United States Census Bureau, the borough has a total area of 0.4 square miles (1.0 km2), all land.

Ice storms and large snowstorms depositing ≥ 12 inches (30 cm) occur once every few years, particularly during nor’easters from December through February.

In 2014, the borough was estimated to be 72.4% Non-Hispanic White, 15.3% Black or African American, 2.3% Asian, 2.1% none of the former, and 2.6% were two or more races.

The buildings stone was quarried locally on Mr. Rumpf's farm, formerly the Joyce property, and the sand was hauled from a pit just below neighboring Hulmeville Borough.

Pennsylvania Route 413 passes through the northern tip of the borough briefly along Bellevue Avenue and Lincoln Highway, becoming concurrent with US 1 Business.

Pennsylvania Route 513 starts at PA 413 and heads southward along Bellevue Avenue to the south end of the borough.