| Business | Phone |
| College Park City Adm 4500 Knox Rd, College Park 20740 | (301) 864-8667 |
| College Park City Office 4500 Knox Rd, College Park 20740 | (301) 864-5586 |
| College Park Code Enforcement 4601 Calvert Rd # A, College Park 20740 | (301) 864-8877 |
| College Park Parking Enfrcmnt 4500 Knox Rd, College Park 20740 | (301) 864-5585 |
| College Park Planning Dept 4500 Knox Rd, College Park 20740 | (301) 277-3445 |
| College Park Senior Ctr 9014 Rhode Island Ave, College Park 20740 | (301) 345-8100 |
| College Park Youth & Family 4912 Nantucket Rd, College Park 20740 | (301) 474-1210 |