Upper St. Clair Township, Allegheny County, Pennsylvania

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Upper St. Clair Township,
Allegheny County, Pennsylvania
First Class Township with home rule
Fulton Log House
Location in Allegheny County and state of Pennsylvania
Location in Allegheny County and state of Pennsylvania
Country United States
State Pennsylvania
County Allegheny
Settled 1762
Incorporated 1788
 • Type Board of Commissioners
 • President Robert W. Orchowski
 • Total 9.8 sq mi (25 km2)
Population (2010)
 • Total 19,229
Time zone Eastern (EST) (UTC-5)
 • Summer (DST) EDT (UTC-4)
Area code(s) 412
Website [www.twpusc.org Upper St. Clair Township]

Upper St. Clair Township is a township with home rule status in Allegheny County, Pennsylvania, United States.

An affluent suburb located about 10 miles (16 km) south of Pittsburgh, Upper St. Clair possesses a nationally recognized school district. The population was 19,229 at the 2010 census.


The first European settler in present-day Upper St. Clair was John Fife, who settled near what is now the intersection of Washington and McLaughlin Run roads in 1762.[1]

St. Clair Township was named after General Arthur St. Clair of Revolutionary War fame, the 9th President of the United States in Congress Assembled. Under his administration as President from February 2, 1787 to October 29, 1787, the Northwest Ordinance and United States Constitution of 1787 were passed.[2]

St. Clair was one of the original townships of Allegheny County, Pennsylvania at the county's creation in 1788. In 1836, the St. Clair Township was divided into two separate townships, Upper St. Clair and Lower St. Clair. The residents of Upper St. Clair formed their township to ensure better government service that could be obtained by separating from the more densely populated northern part of the township. Upper St. Clair Township was further subdivided throughout the 19th and 20th centuries as several parts of the original township separated to form new townships and boroughs. In 1973, Upper St. Clair Township adopted a home rule charter that took effect on January 5, 1976, and is no longer governed by the Pennsylvania Township Code.[3]

The Whiskey Rebellion of 1794 had its roots in Upper St. Clair.

Formed as a volunteer militia company in 1844 by residents of the township, the "St. Clair Guards" later became Company H of the 62nd Pennsylvania Infantry.

The community was home to several mines beginning in the late 19th century. Freehold Real Estate Co. built the first major residential development in March 1913 along Washington Road, which at the time was conveniently close to streetcar service.

Today, the community has many fashionable homes and is considered one of the wealthiest suburbs of Pittsburgh.[4]


According to the United States Census Bureau, the township is located at 40°20′8.2986″N 80°4′46.9956″W / 40.335638500°N 80.079721000°W / 40.335638500; -80.079721000Coordinates: 40°20′8.2986″N 80°4′46.9956″W / 40.335638500°N 80.079721000°W / 40.335638500; -80.079721000. It has a total area of 9.8 square miles (25 km2), of which 0.10% is water.[5]

Neighboring communities[edit]

Upper St. Clair Township is bordered by South Fayette Township to the west, Bridgeville to the northwest, Scott Township and Mt. Lebanon to the north, Bethel Park to the east, and Peters Township (in Washington County) to the south.



Historical population
Census Pop.
1850 1,626
1860 1,847 13.6%
1870 810 −56.1%
1880 829 2.3%
1890 1,548 86.7%
1900 2,693 74.0%
1910 1,311 −51.3%
1920 1,458 11.2%
1930 1,947 33.5%
1940 2,486 27.7%
1950 3,629 46.0%
1960 8,287 128.4%
1970 15,471 86.7%
1980 19,023 23.0%
1990 19,692 3.5%
2000 20,053 1.8%
2010 19,229 −4.1%
Est. 2012 19,299 0.4%

As of the census[12] of 2000, there were 20,053 people, 6,966 households, and 5,823 families residing in the township. The population density was 2,055.7 people per square mile (794.1/km²). There were 7,091 housing units at an average density of 726.9/sq mi (280.8/km²). The racial makeup of the township was 93.79% White, 0.18% African American, 0.02% Native American, 4.02% Asian, 0.02% Pacific Islander, 0.07% from other races, and 0.62% from two or more races. Hispanic or Latino people of any race were 0.78% of the population.

There were 6,966 households, out of which 60.8% had children under the age of 18 living with them, 76.3% were married couples living together, 5.6% had a female householder with no husband present, and 16.4% were non-families. 15.0% of all households were made up of individuals, and 9.0% had someone living alone who was 65 years of age or older. The average household size was 2.81 and the average family size was 3.14.

In the township the population was spread out, with 28.3% under the age of 18, 4.3% from 18 to 24, 22.6% from 25 to 44, 28.3% from 45 to 64, and 16.4% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 93.7 males. For every 100 females age 18 and over, there were 89.1 males.

The median income for a household in the township was $106,444, based on 2012 estimates.[14] About 3.2% of the population were below the poverty line. 3.3% Unemployment rate is lower than average for the state.

Best places to live in the US[edit]

Upper St. Clair was ranked as one of the 10 best places to live in the United States in 2009, according to U.S. News & World Report.[15]

Notable people[edit]


  1. ^ "History of Upper St. Clair". Township of Upper St. Clair. Retrieved July 23, 2009. 
  2. ^ *Klos, Stanley L. (2004). ""Arthur St. Clair"". President Who? Forgotten Founders. Pittsburgh, Pennsylvania: Evisum, Inc. ISBN 0-9752627-5-0. 
  3. ^ Pennsylvania Code Title 302, Section 25.1–101 et seq.
  4. ^ "Top 20 and Bottom 20 Wealthiest Suburbs". ERSI. Retrieved 15 December 2016. 
  5. ^ "Census 2000 Gazetteer Files". United States Census Bureau. Retrieved July 25, 2009. 
  6. ^ "Population of Civil Divisions Less than Counties" (PDF). 1870 United States Census. U.S. Census Bureau. Retrieved November 25, 2013. 
  7. ^ "Population of Civil Divisions Less than Counties" (PDF). 1880 United States Census. U.S. Census Bureau. Retrieved November 24, 2013. 
  8. ^ "Population-Pennsylvania" (PDF). U.S. Census 1910. U.S. Census Bureau. Retrieved November 22, 2013. 
  9. ^ "Number and Distribution of Inhabitants:Pennsylvania-Tennessee" (PDF). Fifteenth Census. U.S. Census Bureau. 
  10. ^ "Number of Inhabitants: Pennsylvania" (PDF). 18th Census of the United States. U.S. Census Bureau. Retrieved November 22, 2013. 
  11. ^ "Pennsylvania: Population and Housing Unit Counts" (PDF). U.S. Census Bureau. Retrieved November 22, 2013. 
  12. ^ a b "American FactFinder". United States Census Bureau. Retrieved January 31, 2008. 
  13. ^ "Incorporated Places and Minor Civil Divisions Datasets: Subcounty Population Estimates: April 1, 2010 to July 1, 2012". U.S. Census Bureau. Retrieved November 25, 2013. 
  14. ^ "Upper St. Clair, PA Employment and Jobs". Areavibes. Retrieved June 16, 2012. 
  15. ^ "Best Places to Live 2009". U.S. News & World Report. Retrieved July 23, 2009. 
  16. ^ "45 Sean Lee". Penn State Official Athletic Site – Football. Retrieved July 23, 2009. 
  17. ^ "Ryan Malone". NHL.com -Players. Retrieved July 23, 2009. 
  18. ^ "Kevin Orie". The Baseball Cube. Retrieved July 23, 2009. 
  19. ^ "Pens sign Upper St. Clair native Reese". Retrieved July 2, 2012. 

External links[edit]