Allegheny County, Pennsylvania facts for kids

Quick facts for kids Allegheny County
U.S. county
Allegheny County Courthouse
Flag Seal
Location within the U.S. state of Pennsylvania
Pennsylvania's location within the U.S.
Country	United States
State	Pennsylvania
Founded	September 24, 1788
Named for	Allegheny River
Seat	Pittsburgh
Largest city	Pittsburgh
Area
• Total	745 sq mi (1,930 km2)
• Land	730 sq mi (1,900 km2)
• Water	14 sq mi (40 km2)  1.9%%
Population  (2020)
• Total	1,250,578
• Density	1,700/sq mi (700/km2)
Time zone	UTC−5 (Eastern)
• Summer (DST)	UTC−4 (EDT)
Congressional districts	12th, 17th
Pennsylvania Historical Marker
Designated:	December 30, 1982

Allegheny County (/ˌælɪˈɡeɪni/ AL-ig-AY-nee) is a county in Pennsylvania, United States. As of the 2020 census, the population was 1,250,578, making it the state's second-most populous county, after Philadelphia County. Its county seat and most populous city is Pittsburgh, Pennsylvania's second most populous city. The county is part of the Greater Pittsburgh region of the state, and is the center of the Pittsburgh media market.

Allegheny was the first county in Pennsylvania to be given a Native American name. It was named after the Lenape word for the Allegheny River. The meaning of "Allegheny" is uncertain. It is usually said to mean "fine river". Stewart says that the name may come from a Lenape account of an ancient mythical tribe called "Allegewi", who lived along the river before being taken over by the Lenape.

History

1680 British map of Western Pennsylvania and Allegheny County from the Darlington Collection

Allegheny County Courthouse

Prior to European contact, this area was settled for thousands of years by succeeding cultures of indigenous peoples. During the colonial era, historic native groups known by the colonists to settle in the area included members of western nations of the Iroquois, such as the Seneca; the Lenape, who had been pushed from the East by European-American settlers; the Shawnee, who also had territory in Ohio; and the Mingo, a group made up of a variety of peoples from more eastern tribes.

European fur traders such as Peter Chartier established trading posts in the region in the early eighteenth century.

In 1749, Captain Pierre Joseph Céloron de Blainville claimed the Ohio Valley and all of western Pennsylvania for King Louis XV of France. The captain traveled along the Ohio and Allegheny rivers. He installed lead plates in the ground to mark the land for France.

Most of the towns during that era were developed along waterways, which were the primary transportation routes, as well as providing water for domestic uses. Through the eighteenth century, both the French and the British competed for control over the local rivers in this frontier territory of North America. Native American bands and tribes allied with the colonists to differing degrees, often based on their trading relationships. The British sent Major George Washington to expel the French from their posts, with no success. He also nearly drowned in the ice-filled Allegheny River while returning to camp.

The English tried again in 1754 to establish a post in the area. They sent 41 Virginians to build Fort Prince George. The French learned of the plan and sent an army to capture the fort. They resumed building it and added increased defensive fortification, renaming it as Fort Duquesne.

Given its strategic location at the Ohio, Fort Duquesne became an important focal point of the French and Indian War. The first British attempt to retake the fort, the Braddock Expedition, failed miserably. In 1758 British forces under General John Forbes recaptured the fort; he had it destroyed to prevent any use by the French. The British built a new, larger fort on the site, including a moat, and named it Fort Pitt. The historic site has been preserved as Pittsburgh's Point State Park.

Under their colonial charters, both Pennsylvania and Virginia claimed the region that is now Allegheny County. Pennsylvania administered most of the region as part of its Westmoreland County. Virginia considered everything south of the Ohio River and east of the Allegheny River to be part of its Yohogania County, and governed it from Fort Dunmore. In addition, parts of the county were located in the proposed British colony of Vandalia and the proposed U.S. state of Westsylvania. The overlapping boundaries, multiple governments, and confused deed claims soon proved unworkable. Near the end of the American Revolutionary War, in 1780 Pennsylvania and Virginia agreed to extend the Mason–Dixon line westward. This region was assigned to Pennsylvania. From 1781 until 1788, much of what Virginia had claimed as part of Yohogania County was administered as a part of the newly created Washington County, Pennsylvania.

Allegheny County was officially created on September 24, 1788, from parts of Washington and Westmoreland counties. It was formed to respond to pressure from the increase in settlers living in the area around Pittsburgh; this was designated as the county seat in 1791. The county originally extended north to the shores of Lake Erie; it was reduced to its current borders by 1800. As population increased in the territory, other counties were organized.

In the 1790s, the United States federal government imposed a whiskey excise tax. Farmers who had depended on whiskey income refused to pay and started the so-called Whiskey Rebellion after driving off tax collector John Neville. After a series of demonstrations by farmers, President George Washington sent troops to suppress the frontier rebellion.

The area developed rapidly through the 1800s with industrialization. It became the nation's prime steel producer by the late 19th century and Pittsburgh was nicknamed "Steel Capital of the World".

In 1913, the county's 125th anniversary was celebrated with a week-long series of events. The final day, September 27, was marked by a steamboat parade of 30 paddle wheelers. They traveled from Monongahela Wharf down the Ohio to the Davis Island Dam. The boats in line were the Steel City (formerly the Pittsburgh and Cincinnati packet Virginia), the flag ship; City of Parkersburg, Charles Brown, Alice Brown, Exporter, Sam Brown, Boaz, Raymond Horner, Swan, Sunshine, I. C. Woodward, Cruiser, Volunteer, A. R. Budd, J. C. Risher, Clyde, Rival, Voyager, Jim Brown, Rover, Charlie Clarke, Robt. J. Jenkins, Slipper, Bertha, Midland Sam Barnum, Cadet, Twilight, and Troubadour.

On October 27, 2018, during a Sabbath course and a Torah study a domestic terrorist attack occurred at the Tree of Life – Or L'Simcha Congregation killing 11 people and harming six others, marking it one of the deadliest terrorist attacks in Pennsylvania history.

Geography

According to the U.S. Census Bureau, the county has a total area of 745 square miles (1,930 km²), of which 730 square miles (1,900 km²) is land and 14 square miles (36 km²) (1.9%) is water.

Three major rivers traverse Allegheny County: the Allegheny River and the Monongahela River converge at Downtown Pittsburgh to form the Ohio River. The Youghiogheny River flows into the Monongahela River at McKeesport, 10 miles (16 km) to the southeast. There are several islands in these courses. The rivers drain via the Mississippi River into the Gulf of Mexico. Although the county's industrial growth resulted in clearcutting of the area's forests at one time, there has been regrowth and a significant woodland remains.

Adjacent counties

• Butler County (north)
• Armstrong County (northeast)
• Beaver County (northwest)
• Westmoreland County (east and south)
• Washington County (southwest)

Major roads and highways

Climate

Allegheny has a humid continental climate which is hot-summer, (Dfa) except in higher elevations, where it is warm-summer (Dfb).

Religion

In 2010 statistics, the largest religious group in Allegheny County was the Roman Catholic Diocese of Pittsburgh, with 460,672 Catholics worshipping at 179 parishes; followed by the United Methodist Church, with 44,204 Methodists in 100 congregations; the Presbyterian Church in the United States of America, with 42,838 Presbyterians in 145 congregations; non-denominational Protestants, with 33,103 adherents in 85 congregations; the Evangelical Lutheran Church in America, with 24,718 Lutherans in 77 congregations; the American Baptist Churches USA, with 17,148 Baptists in 42 congregations; the Assemblies of God, with 12,398 Pentecostals in 30 congregations; Reform Judaism, with 8,483 Jews in 6 congregations; the 7,780 Episcopal Church (United States), with 7,780 Episcopalians in 19 congregations; and Hinduism in the United States, with 6,700 Hindus in four temples. Altogether, 60.6% of the population was claimed as members by religious congregations, although members of historically African-American denominations were underrepresented due to incomplete information. In 2014, Allegheny County had 794 religious organizations, the 11th most out of all US counties.

Demographics

As of the 2010 census, there were 1,223,348 people living in the county. The population density was 1,676 people per square mile (647 people/km²). The racial makeup of the county was 82.87% White, 14.39% Black or African American, 2.94% Asian, 0.03% Pacific Islander, 0.37% from other races, and 1.40% from two or more races. About 1.31% of the population were Hispanic or Latino of any race.

At the 2000 census, there were 1,281,666 people, 537,150 households, and 332,495 families living in the county. The population density was 1,755 people per square mile (678 people/km²). There were 583,646 housing units at an average density of 799 per square mile (308/km²). The racial makeup of the county was 84.33% White, 12.41% Black or African American, 0.12% Native American, 1.69% Asian, 0.03% Pacific Islander, 0.34% from other races, and 1.07% from two or more races. About 0.87% of the population were Hispanic or Latino of any race. 20.0% were of German, 15.0% Italian, 12.7% Irish, 7.5% Polish and 5.1% English ancestry. 93.5% spoke English and 1.3% Spanish as their first language.

There were 537,150 households, out of which 26.40% had children under the age of 18 living with them, 46.10% were married couples living together, 12.40% had a female householder with no husband present, and 38.10% were non-families. Some 32.70% of all households were made up of individuals, and 13.20% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.96.

The age distribution of the population shows 21.90% under the age of 18, 8.50% from 18 to 24, 28.30% from 25 to 44, 23.40% from 45 to 64, and 17.80% who were 65 years of age or older. The median age was 40. For every 100 females, there were 90.00 males; for every 100 females age 18 and over, there were 86.20 males.

2020 census

Economy

In the late 18th century, farming played a critical role in the growth of the area. There was a surplus of grain due to transportation difficulties in linking with the eastern portion of the state. As a result, the farmers distilled the grain into whiskey, which significantly helped the farmers financially.

Employment by occupation in Allegheny County

The area quickly became a key manufacturing area in the young nation. Coupled with deposits of iron and coal, and the easy access to waterways for barge traffic, the city quickly became one of the most important steel producing areas in the world. Based on 2007 data from the US Army Corps of Engineers, Pittsburgh is the second (after Laredo, Texas) busiest inland port in the nation.

US steel production declined late in the 20th century, and Allegheny County's economy began a shift to other industries. It is presently known for its hospitals, universities, and industrial centers. Despite the decline of heavy industry, Pittsburgh is home to a number of major companies and is ranked in the top ten among US cities hosting headquarters of Fortune 500 corporations, including U.S. Steel Corporation, PNC Financial Services Group, PPG Industries, and H. J. Heinz Company.

The county leads the state in number of defense contractors supplying the U.S. military.

Regions

Education

Colleges and universities

Community, junior and technical colleges

Public school districts

Map of Allegheny County, Pennsylvania Public School Districts

School districts include:

Approved private schools

These private schools provide special education for disabled students:

• ACLD Tillotson School, Pittsburgh
• The Day School at The Children's Institute, Pittsburgh
• DePaul School for Hearing and Speech, Pittsburgh
• Easter Seal Society of Western Pennsylvania
• The Education Center at the Watson Institute, Sewickley
• Pace School, Pittsburgh
• Pressley Ridge Day School, Pittsburgh
• Pressley Ridge School for the Deaf, Pittsburgh
• The Watson Institute Friendship Academy, Pittsburgh
• Wesley Spectrum Highland Services, Pittsburgh
• Western Pennsylvania School for Blind Children, Pittsburgh
• Western Pennsylvania School for the Deaf, Pittsburgh

Private high schools

Transportation

Allegheny County's public transportation provider is Pittsburgh Regional Transit. The Allegheny County Department of Public Works oversees infrastructure, maintenance, and engineering services in the county.

The Three Rivers Heritage Trail provides uninterrupted bicycle and pedestrian connections along the three rivers in the city, and the Great Allegheny Passage trail runs from downtown Pittsburgh to Washington, D.C.

The Allegheny County Airport is the original airport for Pittsburgh and houses a number of flight schools, charter flight operations, and medevac operations. It is owned and operated by The Allegheny County Airport Authority.

Pittsburgh International Airport is the major passenger airport for the county with service to many destinations on several airlines. Like the Allegheny County Airport, it is also owned and operated by The Allegheny County Airport Authority.

Major roadways

• Interstate 79 runs north to south from Warrendale to Bridgeville
• Interstate 279 runs north to south from Franklin Park to Downtown
• Interstate 579 (Crosstown Boulevard), from Interstate 279 on the north shore to Liberty Bridge / Boulevard of the Allies
• Interstate 76 / PA Turnpike runs east to west from Interstate 376 in Monroeville to the Warrendale interchange (at Interstate 79)
• Interstate 376 runs east to west from Interstate 76 in Monroeville across the county to Pittsburgh International Airport and beyond
• Pennsylvania Turnpike 576 (future I-576) runs south from Interstate 376 at the Pittsburgh International Airport to US Route 22, also called the Findlay Connector. The next phase of this road extension, from US Route 22 to Interstate 79 running along the County line, is currently under construction and is expected to be open to traffic in 2020.
• US Route 19 runs north to south from Warrendale to Upper St. Clair
• US Route 22 runs west to east, along much of US Route 30 and Interstate 376, from Imperial to Monroeville
• US Route 30 runs west to east from Clinton to North Versailles, joining US 22 and Interstate 376 south of the Pittsburgh International Airport and leaving those same two routes in Wilkinsburg

For information about major state roads, see list of State Routes in Allegheny County, Pennsylvania and Allegheny County Belt System.

Parks and recreation

There are two Pennsylvania state parks in Allegheny County. Point State Park is at the confluence of the Allegheny and Monongahela rivers in Downtown Pittsburgh, and Allegheny Islands State Park is in the Allegheny River in Harmar Township and is undeveloped as of August 2010.

Pennsylvania State Game Lands Number 203 is also located in Allegheny County providing hunting and other activities.

Allegheny Land Trust, a regional land conservation group headquartered in Sewickley, has purchased land in Allegheny County for use as public green spaces for scenic and recreational purposes. In 2012 it pursued land formerly owned by the Pittsburgh Cut Flower Company in Richland Township. In 2020, it received a grant to convert a former country club into a public green space. In December 2020, it donated 20 undeveloped acres across three parcels in Hampton to expand North Park.

Sports

• Pittsburgh Steelers, football team
• Pittsburgh Penguins, ice hockey team
• Pittsburgh Pirates, baseball team
• Pittsburgh Riverhounds, soccer team
• Pittsburgh Passion, Women's Football Alliance team
• Pittsburgh Thunderbirds, American Ultimate Disc League team
• Steel City Roller Derby, Women's Flat Track Derby Association team

Communities

Map of Allegheny County, Pennsylvania, with municipal labels showing cities and boroughs (red), Townships (white), and census-designated places (blue)

Under Pennsylvania law, there are four types of incorporated municipalities: cities, boroughs, townships, and (in a case) a town. The following municipalities are in Allegheny County:

Cities

• Clairton
• Duquesne
• McKeesport
• Pittsburgh (county seat)

Boroughs

Townships

Census-designated places

Census-designated places are geographical areas designated by the US Census Bureau for the purposes of compiling demographic data. They are not actual jurisdictions under Pennsylvania law. Other unincorporated communities, such as villages, may be listed here as well.

Unincorporated communities

Former places

Many political subdivisions of Allegheny County have come and gone through subdivision or annexation through the years. These include:

• Allegheny City – the area that is now the North Shore (or North Side) of the City of Pittsburgh, north of the Allegheny River.
• Allentown Borough – now the neighborhood of Allentown in Pittsburgh.
• Birmingham Borough – what is now Pittsburgh's South Side.
• Brushton Borough
• Carrick Borough – now the neighborhood of Carrick. Formed out of Baldwin Township in 1904, this borough existed until it was annexed by Pittsburgh in 1927. It was named for Carrick-on-Suir, Ireland. Some of the area's manhole covers still bear the Carrick Borough name.
• Chartier Township – existed at the time of the 1860 U.S. Federal Census.
• Collins Township – in what is now the northeast part of the City of Pittsburgh, east of Lawrenceville and north of Penn Avenue.
• Knoxville Borough
• Lawrenceville Borough
• McClure Township – McClure was formed in 1858 from the section of Ross Township adjacent to Allegheny City. In 1867 McClure, along with sections of Reserve Township, was incorporated into Allegheny City. The McClure section of this annexation became Wards 9 (Woods Run Area) and 11 (present-day Brighton Heights) in the City of Pittsburgh.
• Mifflin Township- comprised the modern day communities of Whitaker, West Mifflin, West Homestead, West Elizabeth, Pleasant Hills, Munhall, Lincoln Place, Jefferson Hills, Homestead, Hays, Duquesne, Dravosburg, Clairton and part of Baldwin.
• Patton Township – was in the east-central part of the county, north of North Versailles Township, east of Wilkins and Penn Townships, and south of Plum Township. In the U.S. census for 1860–1880. In 1951 it became incorporated as the borough of Monroeville.
• Northern Liberties Borough – in what is now the Strip District of Pittsburgh. The borough was annexed to Pittsburgh in 1837 as the first addition to the city's original territory.
• Peebles Township – included most of what is now the eastern part of the city of Pittsburgh from the Monongahela River in the south (today's Hazelwood) to the Allegheny River in the north. It was subdivided into Collins and Liberty townships, all of which were incorporated into Pittsburgh in 1868.
• Pitt Township
• St. Clair Township – stretched from the Monongahela River south to the Washington County line. It divided into Lower St. Clair, which eventually became part of the City of Pittsburgh, Dormont, Mount Lebanon, and Upper St. Clair.
• Snowden – now known as South Park Township.
• Sterrett Township
• Temperanceville – what is now Pittsburgh's West End.
• Union Borough – the area surrounding Temperanceville.
• West Liberty Borough – now the neighborhoods of Brookline and Beechview in Pittsburgh.

Population ranking

The population ranking of the following table is based on the 2010 census of Allegheny County.

† county seat

See also

In Spanish: Condado de Allegheny para niños