Mercer County, NJ Ordinances (2026)

Mercer County has no standalone right-to-farm ordinance of its own; instead the County Agricultural Development Board, created under County Code § 3.05.010, is charged with mediating…

Any tie-in to a County drainage structure or storm drain system requires a Mercer County road construction/right-of-way occupancy permit before work starts.

Mercer County Code § 5.03.050 bans diverting stormwater, sump-pump discharge or runoff onto County roadways, gutters, drains, bridges or culverts, and bars any construction that lets…

No one may use or occupy Mercer County park land or structures except under terms, conditions, and times approved by the County Park Commission.

Any gathering of 50 or more people in a Mercer County park, including a street-fair-style festival with vendors, needs a group use permit filed at least seven days before the event…

Mercer County's Park Commission bans possessing or consuming alcohol, drugs or narcotics in any county park or recreation area, and bars anyone visibly under the influence from…

Mercer County parks bar coasting with hand sleds, bobs, skis, carts or any other wheeled or runner vehicle, the category the Park Commission uses to cover skateboards, everywhere…

Mercer County parks are open sunrise to sunset, 365 days a year, and the Park Commission's rules bar anyone from loitering in a park beyond its posted hours. The same…

Mercer County parks ban smoking around any playground or recreation area whenever children are present. The Park Commission's Rules and Regulations place the restriction in the same…

Dogs, cats and other furred animals in Mercer County parks must stay on a leash no longer than 6 feet and cannot run at large outside designated dog park areas. Owners must clean up…

Mobile food vending is banned in every Mercer County park unless the vendor first gets written consent from the Park Commission. The rule blocks selling, soliciting or peddling food or…

Bicycles in Mercer County parks are confined to drives, roadways, paths and trails the Park Commission has designated for that use. Footpaths and walks set aside for pedestrian travel…

Every park and recreation area run by the Mercer County Park Commission operates on a fixed sunrise-to-sunset schedule, 365 days a year, under the Commission's December 7, 2016 Rules…

Using loudspeakers, public address systems or amplifiers anywhere in a Mercer County park or recreation area requires written permission from the Park Commission in advance. The rule…

Building, lighting or maintaining a fire in a Mercer County park is barred except in a camp stove or a fireplace the Park Commission has provided or designated. Oil or gas camp stoves…

Flying a drone or any radio controlled aircraft in Mercer County parks requires written permission from the Park Commission first. The Rules and Regulations place the ban inside the…

Mercer County bans parking outright on several named streets at Trenton-Mercer Airport, enforced under the county's own traffic code.

Using a Mercer County electric vehicle charging station costs $1 per hour for the first four hours under County Code § 5.05.02, rising to $5 per hour after that until the vehicle is…

Mercer County's only codified loading-zone rule is airport-specific: County Code § 6.03.050 designates a single loading zone and a taxi stand on Terminal Circle at Trenton-Mercer…

Mercer County Code § 5.04.030 bans dumping yard waste, garbage, appliances, rubbish or any other debris on County property, or into any County waterway, lake or storm drain, except in…

Placing a dumpster or roll-off container in a Mercer County road right-of-way requires a Right-of-Way Occupancy Permit (ROWOP) under County Code § 5.03.020. The County Engineer must…

Mercer County prohibits dumping or leaving yard waste, cut vegetation, shrubs, or plants on any county-owned property unless placed in a designated receptacle, with the same rule…

Mercer County prohibits placing advertising signs and structures, including digital billboards, along any county road, street, or right-of-way it controls, under the county's…

Mercer County bars placing advertising signs, including garage-sale signs, along any county road or right-of-way without a right-of-way occupancy permit approved by the County Engineer.

Mercer County makes it illegal to cut, dig up, or remove trees, shrubs, or turf on county-owned property such as parks and grounds, with a fine up to $200 for violators.

Any excavation, driveway, curb, sign or structure that touches a Mercer County road right-of-way needs a Roadway Construction Permit/Right-of-Way Occupancy Permit (RCP/ROWOP) under…

Mercer County does not require a performance or maintenance bond for sidewalk removal, replacement or installation; County Code § 5.03.030(F)(4) says that obligation is 'generally…

Mercer County bars storing materials or equipment on sidewalks and walkways within its county right-of-way unless at least five feet stays open to public travel, and requires a county…