Coos County Treasurer & Tax Collector Office

Find Coos County New Hampshire treasurer, tax collector, tax assessor, and property assessor offices. Treasurers and tax collectors provide information on property searches, tax bills, property liens, tax assessed values, and deductions.


Berlin Tax Collector 168 Main Street Berlin NH 03570 603-752-6350


Coos County Tax Collector 92 School Street Carroll NH 03595 603-846-5494

Coos County Tax Collector's Office PO Box 10 West Stewartstown NH 03597 603-246-3321

Dalton Tax Collector 741 Dalton Road Dalton NH 03598 603-837-9802

Gorham Tax Collector 20 Park Street Gorham NH 03581 603-466-2744

Groveton Tax Collector 3 State Street Northumberland NH 03582 603-636-1451

Whitefield Tax Collector 38 King Square Whitefield NH 03598 603-837-9871

About Treasurer & Tax Collector Offices

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.