Amerikas Forenede Stater
- Pittsburg, folketællingsudpeget sted i Lawrence County, Alabama
- Pittsburg, en by i amtet Contra Costa, Californien
- Pittsburg, Williamson County landsby, Illinois
- Pittsburg, by i Crawford County, Kansas
- Pittsburg, en by i Coos County, New Hampshire
- Pittsburg, by i Pittsburg County, Oklahoma
- Pittsburg, by i Camp County, Texas