Chalfont is a borough with home rule status in Bucks County, Pennsylvania, United States. The population was 4,009 at the 2010 census. The borough is served by SEPTA Regional Rail's Lansdale/Doylestown Line at Chalfont station.
Chalfont is named after Chalfont St Giles in Buckinghamshire, England. Chalfont was the home of William Penn's first wife, and William Penn is buried at Jordans Quaker Meeting House near Chalfont St Giles.
The Chalfont Historic District is listed on the National Register of Historic Places and contains many American colonial and Victorian-style houses. Several of these are former residences which are currently occupied by businesses and are concentrated near the intersection of Butler Avenue (U.S. Route 202 Business) and North Main Street (Pennsylvania Route 152) and extend along North Main Street.
Chalfont is located within the Delaware Valley.
Chalfont is located at 40°17′23″N 75°12′37″W (40.289739, −75.210241).
Neshaminy Creek and Pine Run pass through Chalfont.
According to the United States Census Bureau, the borough has a total area of 1.6 square miles (4.3 km²), all of it land.
According to the Köppen climate classification system, Chalfont has a Hot-summer Humid continental climate (Dfa).