- Monnogahela Iron & Metal Co
- Monogahela Animal Hospital
- Monogahela Fire Dept Social
- Monongahela Area Library
- Monongahela Auto Parts
- Monongahela Cemetery
- Monongahela Chamber-Commerce
- Monongahela Clerk's Office
- Monongahela Elementary Ctr
- Monongahela Ford Co Inc
- Monongahela Ford Co Inc
- Monongahela Health Officer
- Monongahela Iron & Metal Co
- Monongahela Manor
- Monongahela Mayor's Office
- Monongahela Medical Supply Co
- Monongahela Pa Wine & Spirit
