Anderson Island, WA demographics:
population, income, and more

Total population
1,448
8.0% year-over-year change
Median household income
$80,282/yr
11.4% year-over-year change
Housing units
1,112
13.8% year-over-year change

Anderson Island population

How many people live in Anderson Island

Anderson Island is home to 1,448 residents, according to the most recent Census data. Gender-wise, 48.5% of Anderson Island locals are male, and 51.5% are female.

Total population
1,448
8.0% year-over-year change
Gender ratio
Male
48.5%
702
Female
51.5%
746
Value Percent YoY change
Male 702 48.5% 4.0%
Female 746 51.5% 12.0%
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

Adults between 25 and 44 make up 3.5% of the population, while another 54.1% fall into the 45 to 64 bracket. Finally, around 39.8% are 65 or older.

Median age
61.6
Age breakdown
Under 15
0%
15 to 24
2.6%
25 to 44
3.5%
45 to 64
54.1%
Over 65
39.8%
Value Percent YoY change
15 to 24 37 2.6% -2.6%
25 to 44 51 3.5% -23.9%
45 to 64 783 54.1% 3.6%
Over 65 577 39.8% 20.2%
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 Anderson Island, 95.4% of the population are US-born citizens, while 4.6% have gained naturalized citizenship. There’s also a share of 14.6% that includes residents with two or more races.

Citizenship
U.S.-born citizens
95.4%
Non-U.S.-born citizens
4.6%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 1,381 95.4% 7.0%
Non-U.S.-born citizens 67 4.6% 34.0%
Racial breakdown
White
82%
Black or African American
0.9%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0.7%
Two or more races
14.6%
Other
1.8%
Value Percent
White 1,188 82%
Black or African American 13 0.9%
Native Hawaiian and other Pacific Islander 10 0.7%
Two or more races 211 14.6%
Other 26 1.8%

Households in Anderson Island

A peek inside Anderson Island households

Anderson Island has 819 households, with an average of 2 members in each. Of these, 67.8% are families, while the remaining 32.2% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
819
9.3% year-over-year change
Average people per household
2
Non-family households
264
Family households
555
Value Percent YoY change
Non-family households 264 32.2% 0.0%
Family households 555 67.8% 14.4%
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 Anderson Island

The housing landscape of Anderson Island

Anderson Island's housing consists of 1,112 units, with 95.7% being detached single-family homes ideal for those wanting space. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 3.7% of the housing landscape.

Housing units
1,112
13.8% year-over-year change
Housing types
Value Percent
1 unit, detached 1,064 95.7%
10 to 19 units 7 0.6%
Mobile home 41 3.7%
Homes built since 2020
25
19.1% year-over-year change

The age of buildings in Anderson Island

In Anderson Island, the median construction year is 1993. About 8.9% of homes were built before the 1940s, with another 2% going up by 1949. Most development happened in the second half of the 20th century. Then, 10.1% of homes were added from 2000 to 2009, 8.7% between 2010 and 2019, and 2.2% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 99 8.9% 16.5%
Built between 1940 and 1949 22 2% 29.4%
Built between 1950 and 1959 50 4.5% -19.4%
Built between 1960 and 1969 83 7.5% 69.4%
Built between 1970 and 1979 28 2.5% -40.4%
Built between 1980 and 1989 154 13.8% -8.9%
Built between 1990 and 1999 442 39.8% 42.1%
Built between 2000 and 2009 112 10.1% -14.5%
Built between 2010 and 2019 97 8.7% 14.1%
Built in 2020 or later 25 2.2% 19.1%
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.

Anderson Island occupancy rates

Out of the 819 occupied housing units in Anderson Island, 96.6% are owner-occupied, while 3.4% are lived in by tenants. Meanwhile, 26.3% of all homes on the local market sit vacant.

Occupied housing units
819
9.3% year-over-year change
Occupancy breakdown
Renter occupied
28
Owner occupied
791
Value Percent YoY
change
Renter occupied 28 3.4% 180.0%
Owner occupied 791 96.6% 7.0%
Unoccupied housing units
26.3%
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.

Anderson Island housing costs

Median housing costs per month
$1,864/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.

Education in Anderson Island

Anderson Island education at a glance

About 3.2% of the population in Anderson Island went to high school, while 44.4% pursued college studies. Another 9.5% earned an associate degree and 32% hold a bachelor’s. Meanwhile, 10.8% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
High school diploma 46 3.2% -2.1%
College diploma 643 44.4% -2.4%
Associate degree 138 9.5% -25.4%
Bachelor's degree 464 32% 30.7%
Graduate degree 157 10.8% 65.3%
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 Anderson Island

How much people earn in Anderson Island

The average annual household income in Anderson Island was $161,876 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +7.8% change from the previous year. At the same time, the median income stood at $80,282, reflecting a +11.4% shift over the same period.

Average household income in Anderson Island
$161,876/year
7.8% year-over-year change
Median household income in Anderson Island
$80,282/year
11.4% year-over-year change

Anderson Island income by age

Those with someone between 45 and 64 in charge, often well established professionally, earn $87,500 overall. Overall, 76.9% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
45 - 64 $87,500 N/A
Over 65 $62,188 3.1%
Above poverty level
1,114
Below poverty level
334
Value Percent YoY
change
Above poverty level 1,114 76.9% 13.4%
Below poverty level 334 23.1% -7.0%

Employment in Anderson Island

Workforce and job types in Anderson Island

The job market in Anderson Island is powered by 475 working residents, spread across a range of industries and roles. 87.4% of the working population are employed in professional or administrative positions, while 12.6% are in hands-on or service-based jobs. Also, 6.7% run their own businesses, 63.2% are employed by private companies, and 8.2% work in the public sector.

Workforce demographics

Working population
475
4.4% year-over-year change
White collar
415
Blue collar
60
Value Percent YoY change
White collar 415 87.4% 9.2%
Blue collar 60 12.6% -20.0%
Employer type
Self employees
6.7%
Private companies
63.2%
Governmental workers
8.2%
Not for profit companies
21.9%
Value Percent YoY change
Self employees 32 6.7% 166.7%
Private companies 300 63.2% 0.0%
Governmental workers 39 8.2% -43.5%
Not for profit companies 104 21.9% 40.5%

Transportation in Anderson Island

How people get around in Anderson Island

Means of transportation
Value Percent YoY change
Car 294 61.9% -7.8%
Ferryboat 38 8% N/A
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 Anderson Island by zipcode?

Zipcode Population Number of households Median income Average income
98303 1,448 819 $80,282 $161,876

Explore more communities

FAQs about Anderson Island demographics 

What is the total population of Anderson Island?

Anderson Island has a total population of 1,448 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 +8.0% compared to a year ago.

What is the gender ratio in Anderson Island?

The gender ratio in Anderson Island is as follows:
  • 48.5% males (702 residents)
  • 51.5% females (746 residents)

What is the median age in Anderson Island?

The median age in Anderson Island is 61.6.

What is the age distribution of the population in Anderson Island?

The age distribution in Anderson Island is as follows:
  • Under 15: 0% (0 residents)
  • Ages 15-24: 2.6% (37 residents)
  • Ages 25-44: 3.5% (51 residents)
  • Ages 45-64: 54.1% (783 residents)
  • Over 65: 39.8% (577 residents)

What is the racial and ethnic makeup of Anderson Island?

The racial and ethnic makeup of Anderson Island is as follows:
  • White: 82% (1,188 residents)
  • Black or African American: 0.9% (13 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0.7% (10 residents)
  • Two or More Races: 14.6% (211 residents)
  • Other: 1.8% (26 residents)

What percentage of the population in Anderson Island are U.S.-born citizens?

U.S.-born citizens represent 95.4% of the population in Anderson Island.

How many housing units are there in Anderson Island?

There are 1,112 housing units in Anderson Island, reflecting a +13.8% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Anderson Island and what is the average household size?

Anderson Island has a total of 819 households, with an average of 2 people in each.

What is the median household income in Anderson Island?

Anderson Island has a median household income of $80,282, representing a +11.4% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Anderson Island?

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

Job types:
  • White-collar workers: 87.4% (415 residents)
  • Blue-collar workers: 12.6% (60 residents)

Places of employment:
  • Self-employed: 6.7% (32 residents)
  • Private companies: 63.2% (300 residents)
  • Governmental workers: 8.2% (39 residents)
  • Not-for-profit companies: 21.9% (104 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