The Town FilesGreen Knoll, New Jersey
Community in Somerset County · population 6,594 (2020 Census)
- Median home
- $597,100
- Household income
- $165,227
- Jan low / Jul high
- 19° / 86°
- Snow a year
- 21 in
- Tornadoes ≤10 mi since 1950
- 7
- Median age
- 44.5
Green Knoll is a community of 6,594 people in Somerset County, New Jersey. The median home is worth $597,100, above the typical New Jersey town ($435,600). It ranks more upscale than 89% of New Jersey towns, better for retirees than 79% of New Jersey towns, better for families than 78% of New Jersey towns.
How Green Knoll ranks
Percentile among New Jersey towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of New Jersey towns.
Homes and cost of living
The median home in Green Knoll is worth $597,100, above the typical New Jersey town ($435,600). Homes cost about 3.6 times the median household income of $165,227, which is more affordable than 58% of New Jersey towns. Median rent is $1,448 a month. 78.8% of households own their home.
| Housing | Green Knoll | Typical New Jersey town |
|---|---|---|
| Median home value | $597,100 | $435,600 |
| Median rent | $1,448 | $1,774 |
| Median household income | $165,227 | $111,891 |
| Home value ÷ income | 3.6× | 3.8× |
| Homeownership | 78.8% | 80.8% |
| Median year built | 1979 | 1969 |
| Seasonal / vacation homes | 0.0% | — |
Who lives in Green Knoll
| People | Green Knoll | Typical New Jersey town |
|---|---|---|
| Median age | 44.5 | 42.7 |
| Age 65 and over | 24.5% | 18.3% |
| Under 18 | 19.6% | — |
| Bachelor's degree or higher | 58.0% | 44.1% |
| Below the poverty line | 3.3% | 5.7% |
| Veterans | 1.9% | — |
| Born outside the U.S. | 19.4% | — |
| Work from home | 28.9% | 16.3% |
| Average commute | 28.7 min | 30.4 min |
| Homes with broadband | 94.4% | 94.6% |
Weather in Green Knoll
July highs average 85.5°F and January lows 19.4°F. About 46.7 inches of rain and melted snow fall a year, with 21.0 inches of snow (typical New Jersey town: 24.5 in). Expect about 16 days a year at 90°F or hotter and 137 nights at or below freezing.
Tornadoes, storms and disasters
7 tornadoes have passed within 10 miles of Green Knoll since 1950, compared with 9 for the typical New Jersey town. The strongest, an EF1, struck on June 26, 2023 about 7.6 miles from the town center. The most recent was on June 26, 2023.
Hail of 1 inch or larger has been reported within 10 miles 24 times; the largest was 1.75 inches on August 17, 2007.
Severe weather in Somerset County since 1996
Somerset County has been included in 30 federal disaster or emergency declarations since 1953, most often for fire, flood, other.
| Declared | Incident | Declaration |
|---|---|---|
| September 5, 2021 | Hurricane | DR-4614: Remnants Of Hurricane Ida |
| September 2, 2021 | Hurricane | EM-3573: Remnants Of Hurricane Ida |
| March 25, 2020 | Biological | DR-4488: Covid-19 Pandemic |
| March 13, 2020 | Biological | EM-3451: Covid-19 |
| June 8, 2018 | Severe Storm | DR-4368: Severe Winter Storm And Snowstorm |
Jobs and pay in Somerset County
Somerset County had 190,468 jobs in 2024, paying an average of $106,418 a year. Unemployment was 3.8% in 2023; in Green Knoll itself the ACS puts it at 4.2%.
Towns near Green Knoll
- Bridgewater, NJ1.0 mi · 45,977 people · home $605,500
- Bridgewater Center, NJ1.7 mi · 6,082 people · home $703,700
- Martinsville, NJ2.0 mi · 12,147 people · home $720,400
- Somerville, NJ2.4 mi · 12,346 people · home $435,700
- Raritan, NJ2.8 mi · 7,835 people · home $456,900
- The Hills, NJ3.4 mi · 11,410 people · home $577,000
- Bradley Gardens, NJ3.4 mi · 14,077 people · home $546,300
- Finderne, NJ3.7 mi · 6,392 people · home $413,400
Green Knoll questions
Is Green Knoll, New Jersey a good place to retire?
On The Town Files lifestyle rankings, Green Knoll scores better for retirees than 79% of New Jersey towns and quieter than 65%. 24.5% of residents are 65 or older (median age 44.5).
How much does a house cost in Green Knoll?
The median owner-occupied home in Green Knoll is valued at $597,100 (Census ACS 2020–2024), against a median household income of $165,227, so homes cost about 3.6 times income. Median rent is $1,448 a month.
What is the weather like in Green Knoll?
July highs average 85.5°F and January lows 19.4°F (NOAA 1991–2020 normals). It gets about 46.7 inches of precipitation a year and 21.0 inches of snow.
Does Green Knoll get tornadoes?
7 tornadoes have passed within 10 miles of Green Knoll since 1950 (NOAA Storm Events); the strongest was an EF1 on June 26, 2023. The typical New Jersey town has had 9.
- U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024)
- U.S. Census Bureau, 2020 Census and 2025 Gazetteer (2020 / 2025)
- NOAA NCEI U.S. Climate Normals (1991–2020)
- NOAA NCEI Storm Events Database (1950–2026)
- FEMA OpenFEMA Disaster Declarations (this product uses the FEMA OpenFEMA API but is not endorsed by FEMA) (1953–2026)
- NCES Common Core of Data (2023–24)
- BLS Quarterly Census of Employment and Wages; USDA ERS county unemployment (BLS LAUS) (2000–2024)
- The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025)