Mary Ann Furnace Historic District

Longswamp is an unincorporated community in Longswamp Township in Berks County, Pennsylvania, United States. Longswamp is located along State Street southeast of Topton.

The Long-Hawerter Mill is an historic, American grist mill that is located on Little Lehigh Creek in Longswamp Township, Berks County, Pennsylvania. It was listed on the National Register of Historic Places in 1990.

Rittenhouse Gap is the name of a village in Longswamp Township in Berks County, Pennsylvania, United States, situated at 40°28′04″N 75°37′47″W. The gap which gives the town its name lies between the headwaters of Swabia Creek, in the Lehigh River watershed, and an unnamed tributary of the Perkiomen Creek, in the Schuylkill River watershed. Gap Hill lies along its northwestern side. The village is located at the northeastern end of the gap, around the source of Swabia Creek. The Catasauqua and Fogelsville Railroad was extended to the village in 1865, to carry magnetite from the mines in the vicinity, largely owned by the Thomas Iron Company. These mines were among those selected by Thomas Edison for experiments in magnetic beneficiation of iron ore, by which he hoped to make iron mining in the Northeastern United States cost effective. The availability of cheap Mesabi Range ore defeated his plans, and the mines and railroad were abandoned after World War I. The geological origins of the deposits have been the subject of recent research. With the closing of the iron mines, the community lost its principal support. It now lies at the head of the Bear Creek Mountain Resort and uses the Macungie zip code of 18062.

Mertztown is a census-designated place in Longswamp Township in Berks County, Pennsylvania. It is located near the borough of Topton. As of the 2010 census, the population was 664 residents.Mertztown is located in Berks County at latitude 40.506 and longitude -75.665. Its elevation is 466 feet. It appears on the United States Geological Survey map for Topton and is in the Eastern Time Zone (UTC-5). The Reading Railroad which ran through Mertztown, was later acquired by Norfolk Southern as the Reading Line, and remains a heavily used railroad branch. A branch of the Catasauqua and Fogelsville Railroad once passed through the Farmington and Klines Corner section in Mertztown, but the tracks were later removed. Mertztown was founded in 1823 by Robert Mertz. The population density is .01% Black, .01% Hispanic or other, and 99.8% white. Atlas Minerals, a major mineral company, is located in Mertztown. The company, which moved to Mertztown in 1917, has been based there ever since. Mertztown is served by Brandywine Heights Area School District, which is based in Mertztown. Gateway Christian School is also located in Mertztown. The area code is 610. The Toad Creek runs east through the village from Topton into the Little Lehigh Creek.

Henningsville is an unincorporated community in Longswamp Township in Berks County, Pennsylvania, United States. Henningsville is located at the intersection of Woodside Avenue and Centennial Road.

Longswamp Township is a township in Berks County, Pennsylvania, United States. The population was 5,551 at the 2020 census.

Maple Grove is an unincorporated community in Longswamp Township in Berks County, Pennsylvania, United States. Maple Grove is located near the intersection of State Street and Mountain Road.

Hancock is an unincorporated community in Longswamp Township in Berks County, Pennsylvania, United States. Hancock is located at the intersection of State Street and Park Avenue.

Dorney Road Landfill is a 27-acre (11 ha) municipal and industrial landfill in Upper Macungie Township and Longswamp Township, Pennsylvania that was polluted with toxic waste from 1952 to 1978. The site is surrounded by rural residences and farmland. The U.S. Environmental Protection Agency (EPA) added the site to the Superfund National Priorities List in 1984. The site was remediated and removed from the National Priorities List in 2018.

Seisholtzville is a village that is primarily located in Hereford Township, Pennsylvania, with a portion of the village located in Longswamp Township. It uses the Macungie Zip Code of 18062. The area code is 610 and it is served by the Bally telephone exchange.

Huffs Church is a village in western Hereford Township, Berks County, Pennsylvania, United States. The West Branch Perkiomen Creek flows southeastward through the village to join the Perkiomen Creek in the Green Lane Reservoir. It is split between the Alburtis zip code of 18011 and that of the Barto zip code of 19504. Landhaven Bed & Breakfast is in the center of the village and includes five rooms, an antique general store, and occasional live music.

Fredericksville is an unincorporated community in Rockland Township in Berks County, Pennsylvania, United States. Fredericksville is located at the intersection of Fredericksville and Five Points Roads.