Middlesex County Treasurer & Tax Collector

Find Middlesex County Connecticut treasurer, tax collector, tax assessor, and property assessor. Treasurers and tax collectors provide information on property searches, tax bills, property liens, tax assessed values, and deductions.


Clinton Tax Collector 54 East Main Street Clinton CT 06413 860-669-9067


Cromwell Tax Collector 41 West Street Cromwell CT 06416 860-632-3445

Deep River Tax Collector 174 Main Street Deep River CT 06417 860-526-6028

Durham Tax Collector 30 Town House Road Durham CT 06422 860-349-1165

East Haddam Tax Collector 7 Main Street East Haddam CT 06423 860-873-5033

East Hampton Tax Collector 20 East High Street East Hampton CT 06424 860-267-2300

Middlefield Tax Collector 393 Jackson Hill Road Middlefield CT 06455 860-349-7117

Middletown Tax Collector 245 deKoven Drive Middletown CT 06457 860-344-3429

Old Saybrook Treasurer 302 Main Street Old Saybrook CT 06475 860-395-3073

Westbrook Tax Collector 866 Boston Post Road Westbrook CT 06498 860-399-3043

What forms of payment are accepted by Tax Collectors?

Tax Collectors will generally accept cash, personal checks, and credit card payments. Many will also offer online payments using electronic checks, credit cards, or PayPal. It is common for a convenience charge to be added to online payments.

What are special assessments?

Special assessments are additional charges on a property, which are usually associated with a public improvement that benefits certain property owners, such as a sewer assessment. Special assessments are usually added to the owner's property tax bill.

What are supplemental tax bills?

Supplemental tax bills are additional property tax bills that result from a re-appraisal of a property, usually because of a transfer of ownership or a physical improvement or expansion to the property. If the reappraisal determines that additional taxes are owed, a supplemental tax bill is issued.