| Business | Phone |
| Facility Services Dept 211 W Spruce Ave, Montesano 98563 | (360) 249-5753 |
| Grays Harbor Cnty Equalization 310 W Spruce Ave # 217, Montesano 98563 | (360) 249-5400 |
| Grays Harbor County Comm 100 W Broadway Ave 1, Montesano 98563 | (360) 249-3731 |
| Grays Harbor Data Processing 100 W Broadway Ave 32, Montesano 98563 | (360) 249-4144 |
| Grays Harbor Domestic Violence 102 W Broadway Ave 203, Montesano 98563 | (360) 249-4472 |
| Grays Harbor Fire District 2 8 Firestation Rd, Montesano 98563 | (360) 249-4730 |
| Grays Harbor Planning Dept 100 W Broadway Ave 31, Montesano 98563 | (360) 249-5579 |
| Grays Harbor Superior Ct Clerk 102 W Broadway Ave 203, Montesano 98563 | (360) 249-3842 |
| Grays Harbor Treasurer's Ofc 100 W Broadway Ave 22, Montesano 98563 | (360) 249-3751 |
| Honorable Gordon L Godfrey 102 W Broadway Ave # 305, Montesano 98563 | (360) 249-6363 |
| Honorable Stephen E Brown 102 W Broadway Ave 202a, Montesano 98563 | (360) 249-3441 |