Warren County Treasurer & Tax Collector

Find Warren County New Jersey 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.


Alpha Tax Collector 1001 East Boulevard Phillipsburg NJ 08865 908-454-0088


Bethlehem Township Treasurer 405 Mine Road Asbury NJ 08802 908-735-4107

Blairstown Township Tax Collector 12 Mohican Road Blairstown NJ 07825 908-362-6663

Oxford Tax Collector 11 Green Street Oxford NJ 07863 908-453-3529

Warren County Board Of Taxation 202 Mansfield Street Belvidere NJ 07823 908-475-6071

Washington Tax Collector 100 Belvidere Avenue Washington NJ 07882 908-689-3601

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.