- Caruso Heating & AC INC
- Castle Catering Svc
- Castle Claims Svc Inc
- Castle Gas Co Inc
- Castle Place
- Castle Ridge Apartments
- Castle Shannon Auto Body
- Castle Shannon Boro Public Wrk
- Castle Shannon Borough Offices
- Castle Shannon Dental Pvlln
- Castle Shannon Development
- Castle Shannon Fire Dept
- Castle Shannon Learning Ctr
- Castle Shannon Library
- Castle Shannon Liquor Store
- Castle Shannon Municipal Ofc
- Castle Shannon Plumbing & Htg
- Castle Shannon Police Dept
- Castle Shannon Sunoco
- Castle Shannon United Mthdst
- Castle Tavern Inc
