States · New Jersey · Sussex County

Lake Mohawk, New Jersey.

A community in Sussex County, with no city government of its own. Zillow publishes no home prices for it: see Sussex County’s.

Living in Lake Mohawk, Sussex County, New Jersey

Lake Mohawk, in Sussex County, had 9,759 people in the 2020 census. Half its households earn more than $149,135 a year and half less, against $116,186 across Sussex County; 2% of its people live below the poverty line. 84% of its homes are lived in by their owners and 16% are rented. Unemployment in Sussex County was 4.3% in August 2026, and the county had 0.9% more jobs in 2025 than the year before. The most residents work in schools and health care, then professional services.

People 9,759 in the 2020 census; median age 43.3
Household income $149,135 the median, give or take $18,597 · Sussex County: $116,186
Unemployment 4.3% Sussex County, August 2026; 5.4% a year before
Homes 84% lived in by their owners; 16% rented
  • 3,839households
  • 61%of adults have a degree
  • 2%below the poverty line
  • 34 mintypical commute
  • 23%work from home

What residents work in

  • Schools, hospitals and social care24%
  • Professional and business services17%
  • Manufacturing13%
  • Shops (retail)9%
  • Building trades8%
  • Restaurants, hotels and entertainment7%

Employed residents by industry, from the Census survey. Sussex County had 38,705 jobs in 2025, 0.9% more than the year before (Bureau of Labor Statistics).

Weather through the year

Average daily high and low for each month: coldest in January, 36° and 19°; warmest in July, 84° and 62° 20° 40° 60° 80° J 36° 19° F M A M J J 84° 62° A S O N D
Average daily high and low for each month: coldest in January, 36° and 19°; warmest in July, 84° and 62° 20° 40° 60° 80° J 36° 19° F M A M J J 84° 62° A S O N D

Coldest in January, with highs near 36° and lows near 19°; warmest in July, with highs near 84° and lows near 62°. About 49 inches of rain and melted snow a year.

Average daily high and low, 1991–2020, at the Andover Aeroflex Airport weather station, 3 miles away (NOAA).

Largest workplaces in Sussex County

  1. ThorlabsInstrument lenses manufacturing1,227
  2. Newton Medical CenterGeneral hospital914FTE
  3. Sparta Township Public School DistrictSchool district601FTE
  4. Vernon Township School DistrictSchool district547FTE
  5. Sussex County Community CollegeTwo-year college458
  6. Ronetco SupermarketsSupermarkets330
  7. Ronetco SupermarketsSupermarkets315
  8. AW Franklin- Ascend Wellness HoldingsHydroponic crop farming312

Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 66 workplaces with 20 or more staff, 6,972 people in all across the county; Lake Mohawk has two of its own. Hospitals come from their Medicare cost reports (CMS, 2023), school districts from the Common Core of Data (NCES, 2023–24) and colleges from IPEDS (NCES, 2023–24); FTE marks full-time equivalent staff. Not listed: many offices and banks, which need not report to OSHA; military bases, whose staff OPM withholds; and, in about half the states, city and county governments.

Natural hazards

  1. Strong windVery high
  2. Cold wavesVery high
  3. Winter weatherRelatively high
  4. LightningRelatively high
  5. Inland floodingRelatively moderate

FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms in Lake Mohawk’s census tracts, against the rest of the country; all of them together, relatively moderate. It is meant for planning, not a substitute for a local risk assessment or a flood map: FEMA’s index.

From the U.S. Census Bureau’s 2020 census and its American Community Survey (2020–2024 five-year estimates), and the Bureau of Labor Statistics. A survey, so each figure has a margin of error, and figures it is not sure of are left out. More on Sussex County.