Cities in Allegheny County, United States ( 359 )
- Adams, Massachusetts
- Ahuimanu
- Aiea, Hawaii
- Aiken, South Carolina
- Alamosa
- Alfred, New York
- Allendale, New Jersey
- Allison Park
- Andover, Minnesota
- Andrews, Texas
- Annapolis
- Anoka, Minnesota
- Arnold, Maryland
- Ashland, Wisconsin
- Aspinwall, Pennsylvania
- Avalon, Pennsylvania
- Baldwin, Pennsylvania
- Bay Minette
- Bear, Delaware
- Bellevue, Pennsylvania
- Belvedere, South Carolina
- Bennington
- Benson, Arizona
- Bergenfield
- Bethel Park
- Bethlehem, North Carolina
- Bisbee, Arizona
- Blaine, Minnesota
- Blue Hills, Connecticut
- Bluffton, Ohio
- Bogota, New Jersey
- Boulder City
- Brackenridge, Pennsylvania
- Brentwood, Pennsylvania
- Bridgeville, Pennsylvania
- Brigham City