Town Hall Address 393 Jackson Hill Road, P. O. Box 179 Middlefield, CT 06455 United States- Middlesex County Website http://www.middlefieldct.org Town Clerk 860-349-7116 http://www.middlefieldct.org/town-clerk/ United States Tax Collector 860-349-7117 Mon-Fri – 9:00-1:30, Jan. & July – Town Hall hours United States Assessor 860-349-7111 http://gis.vgsi.com/middlefieldct/ Mon-Fri – 9:00-2:00, Jan. & July – Town Hall hours United States Building 860-349-7123 United States Zoning 860-349-7123 United States Probate Court Middletown (PD-15) Tax Adjustment Uniform Fiscal Year- July, January Indices General Index > real property > sewer assessment Town Hall Hours Monday – 9:00 to 5:00, Tuesday to Thursday – 9:00 to 4:00, Friday – 9:00 to 3:00 Water Source Well and Septic Sewer Source Sewer in Lake Beseck area and Harvest Wood / Rt. 66 County Middlesex