Warren County, New Jersey Property Tax Rates and Average Tax Bills

Scroll down to see a tax map with more information

Tax Assessor Phone Numbers


The average 2019 Warren County property tax bill was $7,072
The average 2019 New Jersey property tax bill was $8,736
Click table headers to sort
Municipality2020 General Tax Rate2019 Average Tax Bill
Allamuchy Twp2.953$6,882
Alpha Boro3.192$5,908
Belvidere Town5.695$6,938
Blairstown Twp2.472$7,235
Franklin Twp3.002$9,203
Frelinghuysen Twp2.502$8,113
Greenwich Twp3.332$8,881
Hackettstown Town3.129$8,407
Hardwick Twp3.24$8,223
Harmony Twp2.445$5,086
Hope Twp3.013$7,581
Independence Twp3.372$7,683
Knowlton Twp3.599$7,291
Liberty Twp3.168$7,034
Lopatcong Twp2.955$6,875
Mansfield Twp3.478$7,988
Oxford Twp4.172$6,838
Phillipsburg Town4.042$4,431
Pohatcong Twp3.964$6,858
Washington Boro5.161$7,380
Washington Twp3.628$8,847
White Twp2.182$5,568
Warren County, NJ Property Tax Map
Tax Rate Less Than County Average Tax Rate Less Than County Average
Tax Rate More Than County Average Tax Rate More Than County Average
Tap or click markers for tax data for each town

Warren County, NJ Tax Assessor Phone Numbers

TownTax AssessorPhone #
Allamuchy TwpRich Motyka908-852-5132
Alpha BoroKathy Degan908-454-0088
Belvidere TownDavid Gill908-475-3924
Blairstown TwpRich Motyka908-362-6643
Franklin TwpCraig Brotons908-689-3853
Frelinghuysen TwpDavid Gill908-852-4121
Greenwich TwpJennifer Carabelli908-859-0909
Hackettstown TownJason Cohen908-852-3130
Hardwick TwpDavid Gill908-362-6528
Harmony TwpRich Motyka908-213-1600
Hope TwpRich Motyka908-459-5011
Independence TwpAnn Marie Mcdougal908-637-4133
Knowlton TwpRich Motyka908-496-4783
Liberty TwpPenny Holenstein908-637-4579
Lopatcong TwpRobert Sweeney908-859-3355
MansfieldJason Laliker908-689-6151
Oxford TwpRich Motyka908-453-3380
Phillipsburg TownCraig Brotons908-454-5500
Pohatcong TwpJennifer Carabelli908-475-6121
Washington BoroCraig Brotons908-689-3600
Washington TwpCraig Brotons908-689-7200
White TwpMichelle Trivigno908-475-3279