Are There Muskrats in New Jersey?
Yes, muskrats are very common throughout New Jersey in marshes, coastal wetlands, and inland water bodies. These semi-aquatic rodents thrive in the state's extensive salt marshes along the coast and in fresh marshes throughout inland areas. Muskrats are well established and active year-round, becoming especially visible during spring and fall.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 22, 2026.
- 484
- GBIF records
Yes, muskrats are in New Jersey. Next you'll want:
Yes, muskrats are very common throughout New Jersey in marshes, coastal wetlands, and inland water bodies. These semi-aquatic rodents thrive in the state's extensive salt marshes along the coast and in fresh marshes throughout inland areas. Muskrats are well established and active year-round, becoming especially visible during spring and fall.
Where Muskrats Live in New Jersey
Muskrats inhabit nearly all suitable wetland habitats throughout New Jersey. The extensive salt marshes of the Delaware Bay provide prime habitat for muskrats, particularly in areas like the Forsythe National Wildlife Refuge and surrounding marshes. Coastal wetlands along the Atlantic shore from Cape May northward to Sandy Hook support strong muskrat populations. The Hudson River estuary and associated tidal marshes in northeastern New Jersey host significant numbers of muskrats. The Hackensack Meadowlands, despite urban pressures, still contain muskrat populations in remaining marsh areas. The Delaware River drainage supports muskrats in its tributary wetlands and flood plains. Inland marshes and ponds throughout central and northern New Jersey provide habitat. The Passaic River and its associated wetlands in the northern portion of the state contain established muskrat families. Wherever water persists with adequate vegetation, muskrats establish themselves. For more on muskrat in New Jersey, see ourNew Jersey muskrat guide.
Season and Activity in New Jersey
Muskrats remain active throughout New Jersey's entire year, though their behavior shifts seasonally. Spring brings intense activity as mating occurs and females prepare nesting chambers in lodges and bank burrows. Late spring and early summer witness young muskrats venturing from family groups as populations expand. Fall activity increases as families gather vegetation and reinforce shelter structures before winter arrives. Winter remains an active period for muskrats despite cold temperatures, as they continue foraging and maintaining their homes beneath ice and snow. New Jersey's relatively mild winters compared to northern states allow consistent muskrat activity even in the coldest months. Spring and fall provide the most reliable viewing opportunities when muskrats are most visible. Early morning and late evening hours yield the highest frequency of sightings throughout the year. You can also browseNew Jersey wildlife.
How to Identify a Muskrat
Muskrats measure 16 to 25 inches in total length including their distinctive flattened tail. Their dense fur appears rich brown to nearly black, waterproof and fully suited for aquatic living. The flattened tail is the defining characteristic, appearing compressed vertically and covered with small scales rather than hair. This tail shape immediately distinguishes muskrats from all other New Jersey rodents. Their body is stocky and compact, built for swimming and diving. Muskrats have small rounded ears partially hidden by dense fur and small dark eyes positioned high on the head. Front feet have sharp claws for digging and lodge construction, while hind feet are partially webbed for swimming propulsion. Males and females look similar, though breeding males may appear bulkier during spring. In water, muskrats display a humped silhouette with head and flattened tail both clearly visible. See all of ourwildlife guides.
Where to Spot Muskrats in New Jersey
Muskrats concentrate in areas with dense emergent vegetation including cattails, bulrushes, and water lilies. The Forsythe National Wildlife Refuge in Ocean County provides reliable viewing opportunities with established marsh trails and observation areas. Cape May wetlands and surrounding marshes in southern New Jersey host abundant muskrat populations visible during early morning hours. The Hudson River wetlands near the Lincoln Tunnel area, though urban, still contain observable muskrats in remaining marsh patches. The Delaware River marshes in northwestern New Jersey offer viewing opportunities from public access areas. Hackensack Meadowlands trails provide access to locations where muskrats can be spotted, though numbers fluctuate. The Passaic River wetlands in northern New Jersey support muskrat populations accessible from certain public areas. Early morning and late afternoon produce the most frequent sightings. TheNew Jersey wildlife hubidentifies specific public access points for wetland exploration and wildlife viewing.
Muskrat Behavior and Habits
Muskrats are highly aquatic animals, spending the vast majority of their lives in or immediately adjacent to water. They feed almost exclusively on aquatic vegetation including cattails, bulrushes, water lilies, algae, and pondweeds, occasionally supplemented with freshwater mussels, snails, and small fish. Muskrats construct distinctive dome-shaped lodges from marsh vegetation and mud, typically 3 to 4 feet in height with underwater entrances for predator defense. Some individuals prefer burrowing into marsh banks and pond edges, creating tunnel networks. Muskrats are somewhat colonial animals and may share marshes with multiple family groups. They produce two or more litters per year in New Jersey, with average litter sizes of 5 to 6 young. Young muskrats become independent by late summer and disperse seeking their own territories. Lodges remain visible throughout winter, becoming more prominent as surrounding vegetation dies back.
Safety and Coexistence in New Jersey
Muskrats are shy animals that pose no threat to human populations. They are not aggressive and readily flee from disturbances and human presence. New Jersey fish and wildlife regulations allow licensed trappers to legally take muskrats during designated seasons. In most urban and suburban areas, muskrats coexist peacefully with human neighbors despite habitat pressures. Occasionally muskrats cause minor damage by burrowing into pond structures or dikes, but such damage is typically manageable and localized. Natural predators including mink, foxes, raccoons, great blue herons, and bald eagles help maintain natural population balance. Residential ponds frequently support muskrats without conflict. To safely enjoy observing muskrats, maintain distance and visit public wetland areas during appropriate times. Avoid disturbing lodges, particularly during spring when mothers raise young offspring.
Similar Species People Confuse with Muskrats
Beavers are the species most frequently confused with muskrats, though they are much larger at 35 to 60 pounds versus muskrats at 2 to 4 pounds. Beavers have distinctly rounded tails and construct much larger dam structures. Nutrias are another wetland rodent occasionally mistaken for muskrats but are larger with orange front teeth and round rat-like tails. Muskrats have the signature flattened tail and brown dense fur. Water shrews are much smaller than muskrats with pointed snouts and different proportions. Mink are sometimes confused with muskrats but are carnivorous predators with sleeker bodies and smaller size. The muskrat's characteristic flattened tail and distinctive lodges make identification straightforward for anyone familiar with New Jersey's wetland animals.
Frequently Asked Questions About Muskrats
Q: What is the best time to see muskrats in New Jersey? A: Spring and fall are prime seasons, though early mornings and late afternoons yield sightings year-round. Q: How many muskrats can live in one marsh? A: Populations depend on habitat quality, but a productive marsh may contain dozens of muskrat families with multiple lodges. Q: Do muskrats hibernate in New Jersey? A: No, muskrats remain active throughout the winter using air pockets in lodges and beneath ice. Q: What predators hunt muskrats in New Jersey? A: Mink, foxes, raccoons, great blue herons, and bald eagles all prey on muskrats as part of natural food webs. Explore ourwildlife guidefor more information about New Jersey's aquatic animals, and visit theNew Jersey wildlife hubfor additional details about the state's wetland wildlife and habitats.
Plan your muskrat sighting in New Jersey
484 verified muskrat records have been logged in New Jersey, most recently in 2026. See the GBIF records.
Where to look in New Jersey
- Appalachian National Scenic Trail · Wildlife Watching, Birdwatching · Find hotels
- Delaware Water Gap National Recreation Area · Wildlife Watching, Birdwatching · Find hotels
- Great Egg Harbor River · Wildlife Watching, Birdwatching · Find hotels
- Morristown National Historical Park · Wildlife Watching, Birdwatching · Find hotels
- Ellis Island Part of Statue of Liberty National Monument · Find hotels
- Gateway National Recreation Area · Find hotels
More places to see muskrat
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