Allegheny County, PA

ALLEGHANY COUNTY, in the southwestern part of Pennsylvania. Watered by Alleghany, Youghiogheny, Monongahela, and Ohio rivers. Length of this county, 32 miles; mean breadth, 18, with an area of 575 square miles. The face of the country is peculiarly diversified by depressed vales, lying within large swelling hills, which are productive to their summits. In the bosom of these hills there exist inexhaustible beds of fine bituminous coal. Excellent lime and building stone also abounds. Courts are held at Pittsburgh. Pop. in 1820,34,921; in 1830, 50,552; in 1840, 81,235; in 1850, 138,300. (Fanning's, 1853)
    Place Unit Type
    Containing Unit
    Name Type
    Carnegie, PA City or Town
    Carrick, PA City or Town
    Elizabeth, PA City or Town
    Greentree, PA City or Town
    Pittsburgh, PA City or Town
    Sewickley, PA City or Town
    Wilkinsburg, PA City or Town
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