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 … See more

In 2010 statistics, the largest religious group in Allegheny County was the Diocese of Pittsburgh, with 460,672 Catholics worshipping at 179 parishes, followed by 44,204 See more

As of the 2010 census, there were 1,223,348 people living in the county. The population density was 1676 people per square mile … See more

• East Hills
• North Hills
• South Hills
• West Hills
• City of Pittsburgh See more

Until January 1, 2000, Allegheny County's government was defined under Pennsylvania's Second Class County Code. The county … See more

As of 6 November 2022, there were 939,382 registered voters in the county; a majority were Democrats. There were 534,214 registered Democrats, 264,193 registered Republicans, 98,958 registered as independents and 42,017 registered with other parties See more

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 … See more