- P.O. Box 833, Somerville, NJ 08876-0833 PHONE: 908-725-1552 = 800-560-1688 FAX: 908-722-7823 LOCATION: 360 Grove Street at Route 22 East Office & Visitor Information Center Hours: Monday-Friday 8:00 am - 5:00 pm DIRECTIONS TODAY'S WEATHER ...www.somersetcountychamber.org