| Business | Phone |
| New Trier Employment Svc 739 Elm St, Winnetka 60093 | (847) 446-4820 |
| New Trier Township Aid 739 Elm St, Winnetka 60093 | (847) 446-8201 |
| New Trier Twp Adm 739 Elm St, Winnetka 60093 | (847) 446-8202 |
| Northfield Village Hall 361 Happ Rd, Winnetka 60093 | (847) 446-9200 |
| Winnetka Village Refuse Cllctn 1390 Willow Rd, Winnetka 60093 | (847) 716-3531 |
| New Trier Extension 7 Happ Rd, Winnetka 60093 | (847) 446-6600 |
| North Shore Mosquito Abatement 117 Northfield Rd, Winnetka 60093 | (847) 446-9434 |
| Winnetka Vlg Electric Or Water 510 Green Bay Rd, Winnetka 60093 | (847) 716-3551 |