Plymouth, WA demographics:
population, income, and more

Total population
198
-26.4% year-over-year change
Median household income
$50,865/yr
0.6% year-over-year change
Housing units
75
-14.8% year-over-year change

Plymouth population

How many people live in Plymouth

Plymouth is home to 198 residents, according to the most recent Census data. Gender-wise, 66.7% of Plymouth locals are male, and 33.3% are female.

Total population
198
-26.4% year-over-year change
Gender ratio
Male
66.7%
132
Female
33.3%
66
Value Percent YoY change
Male 132 66.7% -23.7%
Female 66 33.3% -31.2%
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 Plymouth is 56, with the population distributed as follows: about 4.6% are children under 15, then 22.7% are in the 15 to 24 age group. Adults between 25 and 44 make up 16.2% of the population, while another 23.7% fall into the 45 to 64 bracket. Finally, around 32.8% are 65 or older.

Median age
55.8
Age breakdown
Under 15
4.6%
15 to 24
22.7%
25 to 44
16.2%
45 to 64
23.7%
Over 65
32.8%
Value Percent YoY change
Under 15 9 4.6% -84.2%
15 to 24 45 22.7% 0.0%
25 to 44 32 16.2% -42.9%
45 to 64 47 23.7% -4.1%
Over 65 65 32.8% 4.8%
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 Plymouth, 79.8% of the population are US-born citizens, while 8.6% have gained naturalized citizenship. At the same time, 11.6% of residents are non-citizens. There’s also a share of 6.6% that includes residents with two or more races.

Citizenship
U.S.-born citizens
79.8%
Non-U.S.-born citizens
8.6%
Non-citizens
11.6%
Value Percent YoY change
U.S.-born citizens 158 79.8% -29.5%
Non-U.S.-born citizens 17 8.6% -34.6%
Non-citizens 23 11.6% 21.1%
Racial breakdown
White
65.7%
Black or African American
0%
American Indian and Alaska Native
2.5%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
6.6%
Other
25.2%
Value Percent
White 130 65.7%
American Indian and Alaska Native 5 2.5%
Two or more races 13 6.6%
Other 50 25.2%

Households in Plymouth

A peek inside Plymouth households

Plymouth has 75 households, with an average of 2 members in each. Of these, 53.3% are families, while the remaining 46.7% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
75
-14.8% year-over-year change
Average people per household
2
Non-family households
35
Family households
40
Value Percent YoY change
Non-family households 35 46.7% 2.9%
Family households 40 53.3% -25.9%
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 Plymouth

The housing landscape of Plymouth

Plymouth's housing consists of 75 units, with 57.3% 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 36% of the housing landscape.

Housing units
75
-14.8% year-over-year change
Housing types
Value Percent
1 unit, detached 43 57.3%
Mobile home 27 36%
Boat, RV, van, etc. 5 6.7%
Homes built since 2020
% year-over-year change

The age of buildings in Plymouth

In Plymouth, the median construction year is 1998. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built between 1960 and 1969 6 8% 20.0%
Built between 1970 and 1979 9 12% -59.1%
Built between 1980 and 1989 4 5.3% -71.4%
Built between 1990 and 1999 22 29.3% 46.7%
Built between 2000 and 2009 28 37.3% 3.7%
Built between 2010 and 2019 6 8% 20.0%
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.

Plymouth occupancy rates

Out of the 75 occupied housing units in Plymouth, 94.7% are owner-occupied, while 5.3% are lived in by tenants.

Occupied housing units
75
-14.8% year-over-year change
Occupancy breakdown
Renter occupied
4
Owner occupied
71
Value Percent YoY
change
Renter occupied 4 5.3% -85.7%
Owner occupied 71 94.7% 18.3%
Unoccupied housing units
0.0%
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.

Plymouth housing costs

Median housing costs per month
$429/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 Plymouth

Plymouth education at a glance

About 54.1% of the population in Plymouth went to high school, while 6.6% pursued college studies. Another 10.5% earned an associate degree and 10.5% hold a bachelor’s. Meanwhile, 2.8% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 28 15.5% 86.7%
High school diploma 98 54.1% -2.0%
College diploma 12 6.6% -40.0%
Associate degree 19 10.5% 11.8%
Bachelor's degree 19 10.5% -61.2%
Graduate degree 5 2.8% 0.0%
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 Plymouth

How much people earn in Plymouth

The average annual household income in Plymouth was $66,918 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +9.7% change from the previous year. At the same time, the median income stood at $50,865, reflecting a +0.6% shift over the same period.

Average household income in Plymouth
$66,918/year
9.7% year-over-year change
Median household income in Plymouth
$50,865/year
0.6% year-over-year change

Plymouth income by age

Those with someone between 45 and 64 in charge, often well established professionally, earn $52,917 overall. Overall, 91.4% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
45 - 64 $52,917 48.0%
Over 65 $39,000 -0.4%
Above poverty level
181
Below poverty level
17
Value Percent YoY
change
Above poverty level 181 91.4% -11.7%
Below poverty level 17 8.6% -73.4%

Employment in Plymouth

Workforce and job types in Plymouth

43.8% of the working population are employed in professional or administrative positions, while 56.2% are in hands-on or service-based jobs. Also, 5.7% run their own businesses, 68.6% are employed by private companies, and 2.9% work in the public sector.

Workforce demographics

White collar
46
Blue collar
59
Value Percent YoY change
White collar 46 43.8% 43.8%
Blue collar 59 56.2% -3.3%
Employer type
Self employees
5.7%
Private companies
68.6%
Governmental workers
2.9%
Not for profit companies
22.9%
Value Percent YoY change
Self employees 6 5.7% 20.0%
Private companies 72 68.6% -5.3%
Governmental workers 3 2.9% 0.0%
Not for profit companies 24 22.9% 166.7%

Transportation in Plymouth

How people get around in Plymouth

Means of transportation
Value Percent YoY change
Car 84 100% 29.2%
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 Plymouth by zipcode?

Zipcode Population Number of households Median income Average income
99346 198 75 $50,865 $66,920

Explore more communities

FAQs about Plymouth demographics 

What is the total population of Plymouth?

Plymouth has a total population of 198 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 -26.4% compared to a year ago.

What is the gender ratio in Plymouth?

The gender ratio in Plymouth is as follows:
  • 66.7% males (132 residents)
  • 33.3% females (66 residents)

What is the median age in Plymouth?

The median age in Plymouth is 55.8.

What is the age distribution of the population in Plymouth?

The age distribution in Plymouth is as follows:
  • Under 15: 4.6% (9 residents)
  • Ages 15-24: 22.7% (45 residents)
  • Ages 25-44: 16.2% (32 residents)
  • Ages 45-64: 23.7% (47 residents)
  • Over 65: 32.8% (65 residents)

What is the racial and ethnic makeup of Plymouth?

The racial and ethnic makeup of Plymouth is as follows:
  • White: 65.7% (130 residents)
  • Black or African American: 0% ( residents)
  • American Indian and Alaska Native: 2.5% (5 residents)
  • Asian: 0% ( residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 6.6% (13 residents)
  • Other: 25.2% (50 residents)

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

U.S.-born citizens represent 79.8% of the population in Plymouth.

How many housing units are there in Plymouth?

There are 75 housing units in Plymouth, reflecting a -14.8% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Plymouth has a total of 75 households, with an average of 2 people in each.

What is the median household income in Plymouth?

Plymouth has a median household income of $50,865, representing a +0.6% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Plymouth?

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

Job types:
  • White-collar workers: 43.8% (46 residents)
  • Blue-collar workers: 56.2% (59 residents)

Places of employment:
  • Self-employed: 5.7% (6 residents)
  • Private companies: 68.6% (72 residents)
  • Governmental workers: 2.9% (3 residents)
  • Not-for-profit companies: 22.9% (24 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