| Emergency | 911 | |
| Fire | 847-882-2138 | |
| Police | 847-882-1818 | |
| Village Hall | 847-882-9100 | |
| Township: | ||
| Barrington | 847-381-5632 | |
| Dundee | 847-428-2634 | |
| Hanover | 630-837-0301 | |
| Palatine | 847-358-6700 | |
| Schaumburg | 847-884-0030 | |
| County: | ||
| Cook | 312-603-5656 | |
| Post Office | 847-885-6510 | |
| Park District | 847-885-7500 | |
| Hospital | 847-843-2000 | |
| Library | 847-885-3511 | |
| Train | 312-322-6777 | |
| Gas | 888-642-6748 | |
| Electric | 800-334-7661 | |
| Water | 847-882-9100 | |
| Refuse | 800-344-1977 | |
| Telephone | 800-244-4444 | |
| Cable TV | 866-594-1234 | |
| School District: | ||
| 15 | 847-963-3000 | |
| 46 | 847-888-5000 | |
| 54 | 847-885-6700 | |
| 211 | 847-755-6600 | |
| 220 | 847-381-6300 | |
| 300 | 847-426-1300 | |
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