Township of Frelinghuysen


Farmland Preservation
Historical Committee
Land Use Board
Municipal Clerk
Office of the Mayor
Open Space Committee
Online Forms
Recreation Committee
Residents Guide
Township Committee
Township History

(908) 852-4121
Fax: (908) 852-7621

Business Hours:
Monday - Friday
Closed for lunch

Mailing Address:
Township of Frelinghuysen
210 Main Street
Johnsonburg, NJ 07825

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Frelinghuysen Township
Warren County, NJ

Frelinghuysen Township rated #4 in the
2015 Best Places to live in NJ for families.

About 24 square miles in area, the Township of Frelinghuysen offers an immensely varied prospect of mountains, valleys, rivers, marshes, rock ledges, and rolling farmland, as well as a history that is still very much in evidence—from old Indian camps near rivers and lakes to its several historic villages, many historic houses, and other structures, such as mills and lime kilns. [More...]

Mud Pond

New Jersey Municipal Website Rankings

Frelinghuysen Township finished 3rd in the county and 167th in the state!

Office of Emergency Management Coordinator

Nick Pachnos
Cell Phone: 908-256-6355

In an effort to provide more reliable and effective communications with citizens, Frelinghuysen Township has implemented Swiftreach Networks, Inc. as our emergency notification provider.

Swift911™ is a system designed to make phone calls to specific people or areas in the event of an emergency or for sharing important information. Frelinghuysen Office of Emergency Management and other departments will use this system to notify citizens by phone of information regarding you or your property. The system can make thousands of calls in a minute to convey vital information. These messages may include information on floods, fires, water emergencies, road closures, missing persons, evacuation orders, and weather emergencies.

The Swiftreach Network Data has been provided by a third party data provider and only includes listed phone numbers in Frelinghuysen Township. It is important for residents and business owners to provide contact information such as unlisted, unpublished or cell phone numbers. Accurate numbers in the database help to ensure emergency information will be passed on to everyone in a timely manner.

Please note: This website it is not monitored on a 24/7 basis and if you are experiencing a true emergency you should dial 911.

Add/Remove/Update Your Contact Information


June 20, 2018 - The Warren County Mosquito Control Commission is planning to perform a limited, targeted adult mosquito treatment tomorrow night, Wednesday, June 20, 2018, please see the list below of townships & affected roads. An adult mosquito insecticide will be sprayed by Ultra-low volume (ULV) truck-mounted sprayer between 8:15 pm and 11:30 pm. The product being applied is: Zenivex E4 (EPA Reg # 2724-807) Active Ingredient Etofenprox OR Duet Dual Action Adulticide (EPA Reg #1021-1795-8329) Active Ingredient (Prallethrin, Sumithrin, Piperonyl Butoxide). More information can be found at:

HARDWICK- Riverview Rd, Ward Rd


HOPE- Far View Rd


June 6, 2018 - Congratulations Todd Mcpeek for being awarded the Mayor's Award at Founders day picnic for years of dedication to Frelinghuysen Twp. It is much appreciated!!

April 17, 2018 - Part time secretary for backing up office staff when needed. Duties would include answering phones, taking messages, miscellaneous office work, as needed and working with the public in the absence of the Clerk. Please contact Donna Zilberfarb, Township Clerk, Frelinghuysen Township, 210 Main Street, Johnsonburg, NJ 07825. Please email resume if interested to

April 5, 2018 - The New Jersey Board of Public Utilities has a "Clean Energy" incentive program for New Jersey residents, businesses and local municipalities. (read the flier here)

April 4, 2018 - Information regarding the Warren County mosquito control program. Read the details here.

Information for new or current residents

A resource guide for new or current residents to the Township of Frelinghuysen can be found here.

The Frelinghuysen Township Municipal code book is available here:
Code of the Township of Frelinghuysen, NJ

Municipal Court

The Frelinghuysen Township Municipal Court is located at:

Municipal Courts of Knowlton Township
628 Route 94
Columbia, New Jersey 07832.

Court Clerk: Rosanne V. McPartland, CMCA

Telephone: 908-496-4131
Fax: 908-496-8997

Easy Things You Can Do Every Day To Protect Our Water...Storm water Brochure

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