Cities in Sussex County, New Jersey by Population (2024)

There are 27 cities in Sussex County, New Jersey.

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

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2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Hopatcong1New Jersey14,72014,3280.67%1,35310.88
Lake Hopatcong2New Jersey10,39810,301-0.39%1,4087.39
Lake Mohawk3New Jersey10,1039,1482.02%2,0125.02
Newton4New Jersey8,2058,344-0.43%2,4423.36
Franklin5New Jersey5,0464,8940.76%1,1584.36
Stanhope6New Jersey3,5943,5170.53%1,9551.84
Highland Lakes7New Jersey3,5124,666-7.58%8134.32
Upper Greenwood Lake8New Jersey3,4523,8830.5%1,2602.74
Hamburg9New Jersey3,3533,2630.66%2,9281.15
Hewitt10New Jersey2,5442,6120.08%5504.62
Ogdensburg11New Jersey2,3062,2520.57%1,0462.20
Sussex12New Jersey2,0622,0140.58%3,4770.59
Byram Center13New Jersey1,9212,017-1.23%6712.86
Vernon Center14New Jersey1,5241,4621.06%5172.95
Crandon Lakes15New Jersey1,0611,221-3.63%4152.56
Layton16New Jersey1,0349281.77%1486.98
Vernon Valley17New Jersey9971,171-4.13%3742.67
Branchville18New Jersey8147890.74%1,3730.59
Andover19New Jersey6065920.5%4501.35
Johnsonburg20New Jersey57736310.32%5421.06
Mount Hermon21New Jersey29016311.54%3110.93
Hope22New Jersey27315310.98%3770.72
Blairstown23New Jersey2662680%6350.42
Silver Lake24New Jersey256397-11.72%2031.26
Marksboro25New Jersey20512510.81%952.15
Allamuchy26New Jersey90114-6.25%352.58
Ross Corner27New Jersey02090%01.78
showing: 27 rows

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Sussex County, New Jersey?

Hopatcong is the largest city in Sussex County.

What is the smallest city in Sussex County, New Jersey?

Ross Corner is the smallest city in Sussex County.

How many cities are in Sussex County?

There are 27 cities in Sussex County, New Jersey.

Frequently Asked Questions