Sesame Place, while physically located in Middletown Township, has Langhorne as its mailing address.

The Langhorne post office also services the northeastern part of Lower Southampton Township, which uses the ZIP code 19053.

The earliest established settlers (three Dutch and two British) arrived in the early 18th century.

Historian William J. Buck wrote "A resident of the place has informed me that this name is of local origin; that a William Richardson Atlee (son of Colonel Samuel Atlee of the Revolutionary Army), a lawyer and son-in-law of General Wayne, resided here about 1790 or perhaps a little earlier.

Shortly afterwards a post office was established here, when it was called Attleborough, a slight change from the original."

[4] The village became known as Attleborough until 1876, when it was incorporated and named for Jeremiah Langhorne,[5] an early resident of the area and former chief justice of the Supreme Court of Pennsylvania.

[6] Langhorne was the base of eGames, the publisher of the cult classic Speedy Eggbert.

[7] According to the U.S. Census Bureau, the borough has a total area of 0.5 square miles (1.3 km2), all land.

SEPTA provides bus service to Langhorne along City Bus Route 14, which runs between the Frankford Transportation Center in Northeast Philadelphia and the Oxford Valley Mall, and Suburban Bus Route 130, which runs between Frankford Avenue and Knights Road in Northeast Philadelphia and Bucks County Community College in Newtown.

The average wettest month is July which corresponds with the annual peak in thunderstorm activity.

During the winter months, the average annual extreme minimum air temperature is 0.8 °F (−17.3 °C).

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

[20] The plant hardiness zone is 7a with an average annual extreme minimum air temperature of 0.8 °F (−17.3 °C).

[18] The spring bloom typically begins by April 7 and fall color usually peaks by November 2.