Mason's Island, Stonington Town, CT demographics:
population, income, and more

Total population
435
-0.5% year-over-year change
Median household income
$137,425/yr
3.8% year-over-year change
Housing units
217
-0.5% year-over-year change

Mason's Island population

How many people live in Mason's Island

Mason's Island is home to 435 residents, according to the most recent Census data. Gender-wise, 49.9% of Mason's Island locals are male, and 50.1% are female.

Total population
435
-0.5% year-over-year change
Gender ratio
Male
49.9%
217
Female
50.1%
218
Value Percent YoY change
Male 217 49.9% -0.9%
Female 218 50.1% 0.0%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Mason's Island is 53, with the population distributed as follows: about 11.7% are children under 15, then 9% are in the 15 to 24 age group. Adults between 25 and 44 make up 19.3% of the population, while another 29% fall into the 45 to 64 bracket. Finally, around 31% are 65 or older.

Median age
53.2
Age breakdown
Under 15
11.7%
15 to 24
9%
25 to 44
19.3%
45 to 64
29%
Over 65
31%
Value Percent YoY change
Under 15 51 11.7% -3.8%
15 to 24 39 9% 8.3%
25 to 44 84 19.3% 2.4%
45 to 64 126 29% -3.1%
Over 65 135 31% -0.7%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Mason's Island, 92.2% of the population are US-born citizens, while 6.7% have gained naturalized citizenship. At the same time, 1.2% of residents are non-citizens. As for race, 83.2% of locals are Caucasian, 1.6% are African American and 3.7% have Asian roots. There’s also a share of 10.3% that includes residents with two or more races.

Citizenship
U.S.-born citizens
92.2%
Non-U.S.-born citizens
6.7%
Non-citizens
1.2%
Value Percent YoY change
U.S.-born citizens 401 92.2% 0.2%
Non-U.S.-born citizens 29 6.7% -3.3%
Non-citizens 5 1.2% -28.6%
Racial breakdown
White
83.2%
Black or African American
1.6%
American Indian and Alaska Native
0.2%
Asian
3.7%
Native Hawaiian and other Pacific Islander
0%
Two or more races
10.3%
Other
0.9%
Value Percent
White 362 83.2%
Black or African American 7 1.6%
American Indian and Alaska Native 1 0.2%
Asian 16 3.7%
Two or more races 45 10.3%
Other 4 0.9%

Households in Mason's Island

A peek inside Mason's Island households

Mason's Island has 192 households, with an average of 2 members in each. Of these, 63% are families, while the remaining 37% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
192
-0.5% year-over-year change
Average people per household
2
Non-family households
71
Family households
121
Value Percent YoY change
Non-family households 71 37% 1.4%
Family households 121 63% -1.6%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Mason's Island

The housing landscape of Mason's Island

Mason's Island's housing consists of 217 units, with 77% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 5.1% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 2.3% of the housing landscape.

Housing units
217
-0.5% year-over-year change
Housing types
Value Percent
1 unit, detached 167 77%
1 unit, attached 11 5.1%
2 units 9 4.2%
3 or 4 units 7 3.2%
5 to 9 units 1 0.5%
10 to 19 units 2 0.9%
20 to 49 units 4 1.8%
50 or more units 11 5.1%
Mobile home 5 2.3%
Homes built since 2020
4
300.0% year-over-year change

The age of buildings in Mason's Island

In Mason's Island, the median construction year is 1966. About 25.9% of homes were built before the 1940s, with another 5.1% going up by 1949. Most development happened in the second half of the 20th century. Then, 11.6% of homes were added from 2000 to 2009, 3.7% between 2010 and 2019, and 1.8% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 56 25.9% 1.8%
Built between 1940 and 1949 11 5.1% 37.5%
Built between 1950 and 1959 21 9.7% -8.7%
Built between 1960 and 1969 31 14.4% -6.1%
Built between 1970 and 1979 19 8.8% 18.8%
Built between 1980 and 1989 24 11.1% -14.3%
Built between 1990 and 1999 17 7.9% 0.0%
Built between 2000 and 2009 25 11.6% -3.9%
Built between 2010 and 2019 8 3.7% -20.0%
Built in 2020 or later 4 1.8% 300.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Mason's Island occupancy rates

Out of the 192 occupied housing units in Mason's Island, 80.7% are owner-occupied, while 18.8% are lived in by tenants. Meanwhile, 11.5% of all homes on the local market sit vacant.

Occupied housing units
192
-0.5% year-over-year change
Occupancy breakdown
Renter occupied
36
Owner occupied
155
Value Percent YoY
change
Renter occupied 36 18.8% 5.9%
Owner occupied 155 80.7% -2.5%
Unoccupied housing units
11.5%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Mason's Island housing costs

Housing costs in Mason's Island come to a median of $1,839 per month, while tenants specifically pay a median gross rent of $1,915.

Median housing costs per month
$1,839/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Mason's Island
$1,915/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Mason's Island

Mason's Island education at a glance

About 21.2% of the population in Mason's Island went to high school, while 15.3% pursued college studies. Another 8.2% earned an associate degree and 29.7% hold a bachelor’s. Meanwhile, 25.3% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 1 0.3% 0.0%
High school diploma 78 21.2% 9.9%
College diploma 56 15.3% -5.1%
Associate degree 30 8.2% -9.1%
Bachelor's degree 109 29.7% 0.0%
Graduate degree 93 25.3% -5.1%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Mason's Island

How much people earn in Mason's Island

The average annual household income in Mason's Island was $164,866 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.6% change from the previous year. At the same time, the median income stood at $137,425, reflecting a +3.8% shift over the same period.

Average household income in Mason's Island
$164,866/year
2.6% year-over-year change
Median household income in Mason's Island
$137,425/year
3.8% year-over-year change

Mason's Island income by age

In Mason's Island, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $133,529. Those with someone between 45 and 64 in charge, often well established professionally, earn $173,834 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $102,250, while those led by someone over 65, many of whom may be retired, have about $102,850 in earnings. Overall, 96.9% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $102,250 -16.0%
25 - 44 $133,529 0.8%
45 - 64 $173,834 4.6%
Over 65 $102,850 2.3%
Above poverty level
407
Below poverty level
13
Value Percent YoY
change
Above poverty level 407 96.9% -1.0%
Below poverty level 13 3.1% 18.2%

Employment in Mason's Island

Workforce and job types in Mason's Island

88.1% of the working population are employed in professional or administrative positions, while 11.9% are in hands-on or service-based jobs. Also, 10.4% run their own businesses, 57.2% are employed by private companies, and 15.4% work in the public sector.

Workforce demographics

White collar
177
Blue collar
24
Value Percent YoY change
White collar 177 88.1% 0.6%
Blue collar 24 11.9% 0.0%
Employer type
Self employees
10.4%
Private companies
57.2%
Governmental workers
15.4%
Not for profit companies
16.9%
Value Percent YoY change
Self employees 21 10.4% 0.0%
Private companies 115 57.2% 3.6%
Governmental workers 31 15.4% -11.4%
Not for profit companies 34 16.9% 6.2%

Transportation in Mason's Island

How people get around in Mason's Island

Commuting methods vary: 97% of residents travel by personal vehicle and 2.4% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 159 97% 0.0%
Railroad 1 0.6% 0.0%
Walk 4 2.4% 33.3%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Mason's Island by zipcode?

Zipcode Population Number of households Median income Average income
06355 12,173 5,364 $137,425 $164,866

Explore more communities

FAQs about Mason's Island demographics 

What is the total population of Mason's Island?

Mason's Island has a total population of 435 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -0.5% compared to a year ago.

What is the gender ratio in Mason's Island?

The gender ratio in Mason's Island is as follows:
  • 49.9% males (217 residents)
  • 50.1% females (218 residents)

What is the median age in Mason's Island?

The median age in Mason's Island is 53.2.

What is the age distribution of the population in Mason's Island?

The age distribution in Mason's Island is as follows:
  • Under 15: 11.7% (51 residents)
  • Ages 15-24: 9% (39 residents)
  • Ages 25-44: 19.3% (84 residents)
  • Ages 45-64: 29% (126 residents)
  • Over 65: 31% (135 residents)

What is the racial and ethnic makeup of Mason's Island?

The racial and ethnic makeup of Mason's Island is as follows:
  • White: 83.2% (362 residents)
  • Black or African American: 1.6% (7 residents)
  • American Indian and Alaska Native: 0.2% (1 residents)
  • Asian: 3.7% (16 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 10.3% (45 residents)
  • Other: 0.9% (4 residents)

What percentage of the population in Mason's Island are U.S.-born citizens?

U.S.-born citizens represent 92.2% of the population in Mason's Island.

How many housing units are there in Mason's Island?

There are 217 housing units in Mason's Island, reflecting a -0.5% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Mason's Island and what is the average household size?

Mason's Island has a total of 192 households, with an average of 2 people in each.

What is the median household income in Mason's Island?

Mason's Island has a median household income of $137,425, representing a +3.8% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Mason's Island?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 88.1% (177 residents)
  • Blue-collar workers: 11.9% (24 residents)

Places of employment:
  • Self-employed: 10.4% (21 residents)
  • Private companies: 57.2% (115 residents)
  • Governmental workers: 15.4% (31 residents)
  • Not-for-profit companies: 16.9% (34 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025