​Incorporated in 1935, Sewickley Heights Borough had a population of 857 in 2020 and occupies 7.3 square miles. It borders Bell Acres,...

Edgeworth Borough was incorporated in 1904, as was Leetsdale, from part of Leet Township, with additional land acquired by voluntary...

Learn about the Sewickley Valley and it's eleven municipalities

​ Bell Acres Borough was incorporated in 1960. It occupies 5.2 square miles and had a population of 1,505 in 2020. It borders Economy and...

​Leet Township, incorporated in 1869, occupies 1.6 square miles and had a population of 1,620 in 2020. It borders Bell Acres, Edgeworth,...

Aleppo Township, originally incorporated in 1876 from the western section of Kilbuck Township, was part of the Depreciation lands...

​The Village of Sewickley grew to serve the traffic on the Beaver Road and the Ohio River. It was first named “Sewickleyville” in 1840,...

Leetsdale Borough was incorporated in 1904, as was Edgeworth, from part of Leet Township. Occupying 1.1 square miles, it had a population...

​Haysville Borough, incorporated in 1902 and with a population of 81 in 2020, is the least populated municipality in Allegheny County. It...

​Glenfield Borough, incorporated in 1883, had a population of 212 in 2020; it occupies one square mile and borders Kilbuck, Aleppo,...

​Incorporated in 1883, Glen Osborne Borough had a population of 590 in 2020 and occupies 0.6 of a square mile, bordering Sewickley,...

​Sewickley Hills Borough., a part of Sewickley Heights Township until its incorporation in 1958, borders Bell Acres, Franklin Park, Ohio...