Location in Allegheny County and state of Pennsylvania
Location in Allegheny County and state of Pennsylvania

Harmar Township is a township in Allegheny County, Pennsylvania, United States. The population was 3,136 at the 2020 census.[1]

The township was named after Harmar Denny, a U.S. congressman and son of Ebenezer Denny.[2]


According to the United States Census Bureau, the township has a total area of 6.4 square miles (17 km2), of which 6.0 square miles (16 km2) is land and 0.5 square miles (1.3 km2), or 7.45%, is water.


Harmar Township is entirely in the Allegheny River drainage basin and contains one undeveloped state park, Allegheny Islands State Park, on three alluvial islands in the Allegheny River. Deer Creek flows through the township; it joins the Allegheny at Harmar.[3]

Government and Politics

Presidential Elections Results[4][5][6]
Year Republican Democratic Third Parties
2020 53% 1,018 44% 855 1% 28
2016 55% 914 42% 693 4% 52
2012 54% 810 45% 671 1% 18

Surrounding and adjacent neighborhoods

Harmar Township has six land borders, including Indiana Township to the north, Frazer Township to the northeast, Springdale Township and Cheswick to the east, O'Hara Township to the southwest and Fox Chapel to the west.

Bordering the Allegheny River, Harmar runs adjacent with Oakmont to the south (with a direct link via Hulton Bridge) and Plum to the south and southeast.


Historical population
Census Pop.
2021 (est.)3,094[1]−1.3%
U.S. Decennial Census[7]
Harmar Township is home to Allegheny Islands State Park and the C.W. Bill Young Lock and Dam in the Allegheny River.

At the 2000 census there were 3,242 people, 1,522 households, and 882 families living in the township. The population density was 543.3 people per square mile (209.7/km2). There were 1,637 housing units at an average density of 274.3/sq mi (105.9/km2). The racial makeup of the township was 97.75% White, 0.68% African American, 0.09% Native American, 0.99% Asian, 0.06% from other races, and 0.43% from two or more races. Hispanic or Latino of any race were 0.56%.[8]

There were 1,522 households, 19.8% had children under the age of 18 living with them, 45.7% were married couples living together, 9.1% had a female householder with no husband present, and 42.0% were non-families. 37.1% of households were made up of individuals, and 13.8% were one person aged 65 or older. The average household size was 2.09 and the average family size was 2.75.

The age distribution was 17.1% under the age of 18, 5.5% from 18 to 24, 28.0% from 25 to 44, 26.9% from 45 to 64, and 22.5% 65 or older. The median age was 45 years. For every 100 females, there were 89.9 males. For every 100 females age 18 and over, there were 87.4 males.

The median household income was $38,625 and the median family income was $50,054. Males had a median income of $35,731 versus $28,455 for females. The per capita income for the township was $24,486. About 6.3% of families and 6.6% of the population were below the poverty line, including 14.8% of those under age 18 and 4.7% of those age 65 or over.


  1. ^ a b Bureau, US Census. "City and Town Population Totals: 2020-2021". Census.gov. US Census Bureau. Retrieved July 20, 2022.
  2. ^ "What's in a name? For some, a bit of history". Pittsburgh Post-Gazette. May 10, 1984. p. 1. Retrieved May 16, 2015.
  3. ^ "Deer Creek". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved December 20, 2010.
  4. ^ EL. "2012 Allegheny County election". Pittsburgh Tribune-Review. Retrieved October 15, 2017.
  5. ^ EL. "2016 Pennsylvania general election results". Pittsburgh Post-Gazette. Retrieved October 15, 2017.
  6. ^ "Election Night Reporting".
  7. ^ "Census of Population and Housing". Census.gov. Retrieved June 4, 2016.
  8. ^ "U.S. Census website". United States Census Bureau. Retrieved January 31, 2008.

Coordinates: 40°32′38″N 79°49′54″W / 40.54389°N 79.83167°W / 40.54389; -79.83167