Green Harbor vs Onset

A side-by-side comparison of Green Harbor and Onset: population, income, housing, and more.

Green Harbor and Onset are places in Massachusetts. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Onset has the higher population (1,561 vs 1,254 in Green Harbor). Green Harbor has the higher median home value ($825,600 vs $415,500 in Onset). Since 2019, Onset's population has grown faster (+107.0% vs +53.1%).

Population, income & housing

	Green Harbor	Onset
Population	1,254	1,561
Median age	69.2 yrs	45.2 yrs
Median household income	$195,930	—
Median home value	$825,600	$415,500
Housing units	703	1,364
Homeownership rate	100.0%	89.4%
Bachelor's degree or higher	34.0%	25.0%
Unemployment rate	3.0%	18.2%

Trends (ACS 5-year, 2019–2023)

	Green Harbor	Onset
Population	819 → 1,254 (+53.1%)	754 → 1,561 (+107.0%)
Median household income	$218,157 → $195,930 (-10.2%)	$42,727 → $72,017 (+68.6%)
Median home value	$848,700 → $825,600 (-2.7%)	$228,800 → $415,500 (+81.6%)
Median gross rent	—	$1,345 → $1,583 (+17.7%)

Green Harbor

Population

8191,254

Median household income

$218,157$195,930

Median home value

$848,700$825,600

Onset

Population

7541,561

Median household income

$42,727$72,017

Median home value

$228,800$415,500

Median gross rent

$1,345$1,583

Age & race/ethnicity

Age distribution (share)

	Green Harbor	Onset
Under 5	14.0%	17.1%
5 to 17	0.0%	8.3%
18 to 24	3.1%	0.5%
25 to 34	14.3%	16.1%
35 to 44	0.0%	7.8%
45 to 54	13.4%	14.0%
55 to 64	3.7%	15.4%
65 to 74	39.9%	16.1%
75 and over	11.7%	4.8%

Race & ethnicity (share)

	Green Harbor	Onset
White (non-Hispanic)	100.0%	65.5%
Black or African American	0.0%	3.4%
American Indian & Alaska Native	0.0%	0.0%
Asian	0.0%	0.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	3.1%
Two or more races	0.0%	12.3%
Hispanic or Latino	0.0%	15.7%

Educational attainment (age 25+)

Share of adults 25+

	Green Harbor	Onset
No high school diploma	31.3%	2.2%
High school graduate	21.3%	46.5%
Some college or associate's	13.3%	26.3%
Bachelor's degree	29.4%	12.7%
Graduate or professional degree	4.6%	12.3%

Commute to work

How workers get to work (share)

	Green Harbor	Onset
Drove alone	95.2%	61.4%
Carpooled	0.0%	0.0%
Public transit	0.0%	0.0%
Walked	0.0%	0.0%
Bicycle	0.0%	0.0%
Worked from home	4.8%	27.2%
Other means	0.0%	11.5%

Housing

Units in structure (share)

	Green Harbor	Onset
1-unit, detached	100.0%	79.0%
1-unit, attached	0.0%	8.7%
2 to 4 units	0.0%	12.4%
5 to 19 units	0.0%	0.0%
20 or more units	0.0%	0.0%
Mobile home & other	0.0%	0.0%

Poverty & households

	Green Harbor	Onset
Poverty rate	6.8%	6.1%
Average household size	2.74	2.15
Mean commute (minutes)	—	16
Median year structure built	1948	1938