Whitemarsh Township is a home rule municipality in Montgomery County, Pennsylvania, United States. It retains its former classification of "Township" in its official name despite being a home rule municipality. The population was 19,707 at the 2020 census. Whitemarsh is adjacent to the neighborhood of Andorra in the Roxborough section of Philadelphia, and is bordered in Montgomery County by Springfield, Upper Dublin, Whitpain, and Plymouth townships, Conshohocken, and the Schuylkill River, which separates it from Lower Merion Township.

Communities in Whitemarsh Township include Barren Hill, Lafayette Hill, part of Miquon, which straddles Whitemarsh and Springfield townships, Spring Mill, part of Plymouth Meeting, which straddles Whitemarsh and Plymouth townships, and part of Fort Washington, some of which is in Whitemarsh, but which is chiefly in Upper Dublin Township.

Whitemarsh was originally inhabited by the Lenape tribe of Native Americans. It was first settled by European colonists in 1683. At that time, Whitemarsh was part of a tract of land that Major Jasper Farmar had purchased from William Penn. Farmar died shortly thereafter, before making the voyage across the ocean to settle on his newly purchased land. But his widow and family, with servants, sailed to Philadelphia in 1685, and established their homestead on the part of their land that lay in nearby Fort Washington. After Farmar's widow died in the 1690s, her son Edward began to sell 100- to 200-acre parcels of their Whitemarsh land to Quakers and German immigrants.

In 1686, limestone was discovered in Oreland, which extends across nearby Springfield and Upper Dublin townships. The subsequent discovery of limestone in the township itself drew new settlers to Whitemarsh. In 1704, Whitemarsh Township was incorporated. At that time, it was located in Philadelphia County. In 1784, Montgomery County was created, and Whitemarsh was made part of it, becoming one of the new county's 28 original communities. Throughout the 17th and 18th centuries, Whitemarsh was characterized by large English estates and its famed limestone quarries.

During the American Revolutionary War, both the Battle of White Marsh and the Battle of Barren Hill took place within the township.

• Alan West Corson Homestead
• Cold Point Historic District
• County Bridge No. 54
• Farmar Mill
• Hope Lodge
• Hovenden House, Barn and Abolition Hall
• Lee Tire and Rubber Company
• Miller's House at Spring Mill
• Mount Joy
• Plymouth Meeting Historic District
• The Highlands
• Union School

According to the U.S. Census Bureau, the township has a total area of 14.7 square miles (38.1 km), of which 14.6 square miles (37.8 km) is land, and 0.1 square miles (0.3 km) (0.68%) is water.

The U.S. Census Bureau includes two census-designated places that include parts of Whitemarsh: Plymouth Meeting and Fort Washington.

Historical population

Census	Pop.	Note	%±
1850	2,408		—
1860	3,047		26.5%
1870	3,151		3.4%
1880	3,239		2.8%
1890	3,516		8.6%
1900	3,350		−4.7%
1910	3,359		0.3%
1920	3,436		2.3%
1930	4,286		24.7%
1940	4,855		13.3%
1950	5,977		23.1%
1960	12,286		105.6%
1970	15,886		29.3%
1980	14,987		−5.7%
1990	14,863		−0.8%
2000	16,702		12.4%
2010	17,349		3.9%
2020	19,707		13.6%
Population 1850-2010

As of the 2010 census, Whitemarsh Township was 90.7% White, 3.5% Black or African American, 0.1% Native American, 4.2% Asian, and 1.2% were two or more races. 1.7% of the population were of Hispanic or Latino ancestry [2].

As of the 2000 census, there were 16,702 people, 6,179 households, and 4,597 families residing in the township. The population density was 1,143.5 inhabitants per square mile (441.5/km). There were 6,372 housing units at an average density of 436.3 per square mile (168.5/km). The racial makeup of the township was 93.29% White, 2.21% African American, 0.02% Native American, 3.70% Asian, 0.14% from other races, and 0.63% from two or more races. Hispanics or Latinos of any race were 0.99% of the population.

There were 6,179 households, out of which 34.4% had children under the age of 18 living with them, 64.4% were married couples living together, 7.1% had a female householder with no husband present, and 25.6% were non-families. 20.8% of all households were made up of individuals, and 7.3% had someone living alone who was 65 years of age or older. The average household size was 2.62 and the average family size was 3.06.

The age distribution was 24.3% under the age of 18, 5.0% from 18 to 24, 29.8% from 25 to 44, 25.1% from 45 to 64, and 15.7% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 93.7 males. For every 100 females age 18 and over, there were 89.6 males.

The median income for a household in the township was $78,630, and the median income for a family was $91,731. Males had a median income of $58,774 versus $41,977 for females. The per capita income for the township was $39,785. About 1.6% of families and 2.9% of the population were below the poverty line, including 1.8% of those under age 18 and 3.1% of those age 65 or over.

Presidential elections results

Year	Republican	Democratic
2020	33.1% 4,413	66.1% 8,809
2016	34.2% 3,847	61.8% 6,960
2012	43.6% 4,540	55.5% 5,782
2008	40.5% 4,311	59.0% 6,275
2004	42.8% 4,336	56.9% 5,767
2000	42.4% 3,685	55.5% 4,822
1996	42.4% 3,173	49.4% 3,698
1992	43.3% 3,537	42.4% 3,495

Whitemarsh Township is governed by a five-member Board of Supervisors elected to four-year terms. As of 2019, the board members are Chair Melissa Sterling (D), Vice-chair Amy Grossman (D), Michael Drossner (D), Laura Boyle Nester (D) and Fran McCusker (D).

Fort Washington State Park is a 483-acre (1.95 km) area in the middle of the township along the Wissahickon Creek.

Miles Park, at the intersection of Germantown Pike and Joshua Road, has basketball courts, baseball fields, a walking track, a snack bar, and vending machines.

Several country clubs have grounds within the town: the Whitemarsh Valley Country Club, the ACE Club, and the Green Valley Club, which each have one golf course, and the Philadelphia Cricket Club, which has two golf courses.

The Colonial School District provides public education to the children of Whitemarsh Township.

As of 2018, there were 88.36 miles (142.20 km) of public roads in Whitemarsh Township, of which 3.70 miles (5.95 km) were maintained by the Pennsylvania Turnpike Commission (PTC), 25.03 miles (40.28 km) were maintained by the Pennsylvania Department of Transportation (PennDOT) and 59.63 miles (95.97 km) were maintained by the township.

The east–west Pennsylvania Turnpike (Interstate 276) and the north-south Fort Washington Expressway (Pennsylvania Route 309) run through the township. Although neither has an interchange in Whitemarsh, the turnpike has an interchange in nearby Plymouth Township, and the Route 309 expressway has an interchange in nearby Fort Washington that also connects with the turnpike. Arterial roads in the township include Ridge Pike, Germantown Pike, Butler Pike, Skippack Pike (Pennsylvania Route 73), Bethlehem Pike, Stenton Avenue, Pennsylvania Avenue, Joshua Road, and Morris Road.

Two SEPTA Regional Rail lines serve the township. The Lansdale/Doylestown line, which connects Bucks, Montgomery, and Philadelphia counties, has a station on the easternmost side of the township: the Fort Washington station. And the Manayunk/Norristown line, which runs along the Schuylkill River, has two stations on the westernmost side of the township: one in Miquon and another, farther north, in Spring Mill.

SEPTA operates City Bus Routes 27 and L and Suburban Bus Routes 94, 95, 97, and 201 in the township, connecting it to Philadelphia and to other suburbs.

Since December 21, 2017, OurBus has provided Whitemarsh Township with intercity bus service, as part of a route that runs from West Chester, Pennsylvania, to Park Avenue on Manhattan Island in New York City. The bus stop in Fort Washington is adjacent to the Fort Washington railroad station.

Norfolk Southern Railway's Morrisville Line, which carries only freight, passes through Whitemarsh Township, running parallel to the southern side of the Pennsylvania Turnpike.

There are no airports in Whitemarsh Township. The closest airport is the Wings Field in Whitpain Township.

• National Register of Historic Places listings in Montgomery County, Pennsylvania
• Great Train Wreck of 1856
• St. Thomas' Church, Whitemarsh
• Erdenheim Farm

• Whitemarsh Township
• living places page
• Lafayette Hill and Whitemarsh News & Events

Preceded by Lower Merion

Bordering communities of Philadelphia

Succeeded by Springfield Township