| Business | Phone |
| Waukegan City Treasurer 410 Robert V Sabonjian Pl, Waukegan 60085 | (847) 599-2569 |
| Waukegan City Treasurers Ofc 410 Robert V Sabonjian Pl, Waukegan 60085 | (847) 249-8794 |
| Waukegan Finance Dept 410 Robert V Sabonjian Pl, Waukegan 60085 | (847) 599-2540 |
| Waukegan Twp Assessor 415 Washington St, Waukegan 60085 | (847) 623-4550 |