Upper St. Clair Township, Allegheny County, Pennsylvania | |
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 Fulton Log House in Upper St. Clair Township | |
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 Location of Upper St. Clair inAllegheny County, Pennsylvania (right) and of Allegheny County inPennsylvania (left) | |
| Coordinates:40°20′08″N80°4′47″W / 40.33556°N 80.07972°W /40.33556; -80.07972 | |
| Country | United States |
| State | Pennsylvania |
| County | Allegheny |
| Settled | 1762 |
| Incorporated | 1788 |
| Named after | Arthur St. Clair |
| Government | |
| • Type | Board of Commissioners |
| • President | Mark D. Christie |
| • Twp. Manager | Matthew Serakowski |
| Area | |
• Total | 9.83 sq mi (25.45 km2) |
| • Land | 9.82 sq mi (25.43 km2) |
| • Water | 0.0077 sq mi (0.02 km2) |
| Population (2020) | |
• Total | 21,160 |
| • Density | 2,152.59/sq mi (831.12/km2) |
| Time zone | UTC-5 (Eastern (EST)) |
| • Summer (DST) | UTC-4 (EDT) |
| Area code | 412 |
| FIPS code | 42-003-79274 |
| Website | http://www.twpusc.org |
Upper St. Clair is atownship withhome rule status in southernAllegheny County, Pennsylvania, United States, located approximately 11 miles (17.7 km) south ofDowntown Pittsburgh, in theSouth Hills region of Allegheny County. As of the2020 census, the township population was 21,160.
Around 9% of the township's area is dedicated to 14 parks and multiple fields, totaling approximately 733 acres.[2] The township has six borders with neighboring communities, includingSouth Fayette Township to the west,Bridgeville to the northwest,Scott Township andMt. Lebanon to the north,Bethel Park to the east, andPeters Township inWashington County to the south.
St. Clair Township was named after GeneralArthur St. Clair of Revolutionary War fame, the ninth President of theUnited States in Congress Assembled. Under his administration as president from February 2, 1787, to October 29, 1787, theNorthwest Ordinance andUnited States Constitution of 1787 were passed.[3]
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.[4]
St. Clair was one of the original townships ofAllegheny County, Pennsylvania at the county's creation in 1788. In 1836, the St. Clair Township was divided into two separate townships, Upper St. Clair andLower 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 andboroughs. 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.[5]
TheWhiskey Rebellion of 1794 had its roots in Upper St. Clair.
Formed as a volunteermilitia company in 1844 by residents of the township, the "St. Clair Guards" later became Company H of the62nd 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. During the 1930s, Upper St. Clair was recorded as a community within the city which had a school district providing regular nursing services.[6]
According to theUnited States Census Bureau, the township has a total area of 9.8 square miles (25 km2), of which 0.10% is water.[7]
Upper St. Clair is served by a K-12namesake public school district, consisting of three elementary schools (Baker, Eisenhower, and Streams), two middle schools (Boyce and Fort Couch), and a singleUpper St. Clair High School. In addition, a church named forSt. Louise de Marillac hosts a privateCatholic-affiliated school serving from Pre-K to 8th grade. A K-8 school for students with special needs known as the Wesley School also operates within the township.[8][9][10]
| Census | Pop. | Note | %± |
|---|---|---|---|
| 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% | |
| 2020 | 21,160 | 10.0% | |
| Sources:[11][12][13][14][15][16][17][18] | |||
As of thecensus of2020, there were 21,160 people and 7,506 households residing in the township. The population density was 2,152.59 inhabitants per square mile (831.12/km2). There were 7,887 housing units. The racial makeup of the township was 88.6%White, 1.0%African American, 0.10%American Indian, 9.4%Asian, 0.0%Pacific Islander, 0.7% fromother races, and 5.2% fromtwo or more races.Hispanic orLatino people of any race were 2.7% of the population.[20]
There were 7,506 households, out of which 38.9% had children under the age of 18 living with them, 71.2% were married couples living together, and 17.9% had a female householder with no spouse or partner present. 18.2% of all households were made up of individuals, and 12.6% had someone living alone who was 65 years of age or older.[20]
In the township the population was spread out, with 25.9% under the age of 18, 7.2% were 20 to 29, 19.6% from 25 to 44, 21.8% from 45 to 64, and 19.0% who were 65 years of age or older. The median age was 42.9 years. For every 100 females there were 93.7 males. For every 100 males, there were 96.29 females.[20]
The structure of Upper St. Clair is a managerial government along with an elected Board of Commissioners consisting of seven members. In a Commission/Manager form of government, the main responsibility of the Board of Commissioner is to function as a policy-making body of government, while the managerial body is responsible for the administrative functions of the Township.
Matthew R. Serakowski is the currentTownship Manager and Mark S. Mansfield is the current Assistant Township Manager. The elected Board of Commissioners are Mark D. Christie (President), Nicholas J. Seitanakis (Vice President), Russell Del Re, C. Elise Logan, Robert W. Orchowski, Daniel R. Paoly, and Ronald J. Pardini.[21]
| Year | Republican | Democratic | Third Parties |
|---|---|---|---|
| 2024 | LOST | WON | LOST |
| 2020 | 46%6,380 | 53%7,353 | 1%173 |
| 2016 | 52%6,064 | 48%5.618 | 1%76 |
| 2012 | 62%7,388 | 37%4,468 | 1%87 |
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