Green Knoll vs Watchung

A side-by-side comparison of Green Knoll and Watchung: population, income, housing, and more.

Green Knoll and Watchung are places in New Jersey. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Green Knoll has the higher population (6,664 vs 6,429 in Watchung). Watchung has the higher median household income ($166,536 vs $156,630 in Green Knoll). Watchung has the higher median home value ($833,300 vs $581,600 in Green Knoll).

Population, income & housing

	Green Knoll	Watchung
Population	6,664	6,429
Median age	44.1 yrs	46.4 yrs
Median household income	$156,630	$166,536
Median home value	$581,600	$833,300
Median gross rent	$1,417	$2,571
Housing units	2,458	2,429
Homeownership rate	75.9%	87.4%
Bachelor's degree or higher	58.4%	62.8%
Unemployment rate	4.2%	8.0%

Trends (ACS 5-year, 2019–2023)

	Green Knoll	Watchung
Population	6,631 → 6,664 (+0.5%)	6,039 → 6,429 (+6.5%)
Median household income	$118,016 → $156,630 (+32.7%)	$157,263 → $166,536 (+5.9%)
Median home value	$482,500 → $581,600 (+20.5%)	$674,500 → $833,300 (+23.5%)
Median gross rent	$1,161 → $1,417 (+22.0%)	$2,021 → $2,571 (+27.2%)

Green Knoll

Population

6,6316,664

Median household income

$118,016$156,630

Median home value

$482,500$581,600

Median gross rent

$1,161$1,417

Watchung

Population

6,0396,429

Median household income

$157,263$166,536

Median home value

$674,500$833,300

Median gross rent

$2,021$2,571

Age & race/ethnicity

Age distribution (share)

	Green Knoll	Watchung
Under 5	4.6%	3.9%
5 to 17	17.1%	17.2%
18 to 24	7.6%	5.9%
25 to 34	9.2%	7.6%
35 to 44	13.6%	11.4%
45 to 54	11.8%	10.9%
55 to 64	13.3%	15.0%
65 to 74	10.4%	17.1%
75 and over	12.3%	10.9%

Race & ethnicity (share)

	Green Knoll	Watchung
White (non-Hispanic)	62.0%	73.2%
Black or African American	3.8%	1.3%
American Indian & Alaska Native	0.0%	0.0%
Asian	23.8%	11.5%
Native Hawaiian & Pacific Islander	0.1%	0.0%
Some other race	0.6%	0.5%
Two or more races	1.3%	4.6%
Hispanic or Latino	8.4%	8.9%

Educational attainment (age 25+)

Share of adults 25+

	Green Knoll	Watchung
No high school diploma	4.1%	4.9%
High school graduate	22.8%	14.5%
Some college or associate's	14.7%	17.8%
Bachelor's degree	35.1%	37.3%
Graduate or professional degree	23.3%	25.4%

Commute to work

How workers get to work (share)

	Green Knoll	Watchung
Drove alone	61.4%	62.9%
Carpooled	9.0%	1.1%
Public transit	0.8%	6.9%
Walked	0.6%	1.3%
Bicycle	0.0%	0.0%
Worked from home	27.5%	27.8%
Other means	0.6%	0.0%

Housing

Units in structure (share)

	Green Knoll	Watchung
1-unit, detached	66.6%	78.3%
1-unit, attached	12.2%	4.3%
2 to 4 units	2.4%	0.7%
5 to 19 units	1.4%	9.2%
20 or more units	16.6%	7.4%
Mobile home & other	0.9%	0.0%

Poverty & households

	Green Knoll	Watchung
Poverty rate	2.9%	2.1%
Average household size	2.70	2.68
Mean commute (minutes)	28	32
Median year structure built	1980	1970