| Baltimore Gas & Electric | 800-685-0123 |
| Child Care Resource Center | 410-297-2984 |
| Harford County Infants and Toddlers Program | 410-638-3823 |
| Havre de Grace Main Street | 410-939-1811 |
| HdG Arts Commission | 410-939-5425 |
| HdG Chamber of Commerce | 410-939-3033 |
| HdG City Hall | 410-939-1800 |
| HdG Office of Tourism & Visitor Center | 410-939-2100 |
| HdG Public Library | 410-939-6700 |
| HdG Recreation & Parks Council |
410-939-6724 |
| HdG U.S. Post Office | 410-939-9507 |
| HdG Water & Waste Water Treatment | 410-939-1220 |
| HdG Yacht Basin | 410-939-0015 |
| Pet License (Harford) | 410-638-3505 |
| Verizon | 800-870-0000 |
| Verizon | 800-222-0300 |
| Voter Registration | 410-638-3565 |
