Summit Lake, WA demographics:
population, income, and more

Total population
36,429
1.5% year-over-year change
Median household income
$96,868/yr
7.1% year-over-year change
Housing units
15,546
0.3% year-over-year change

Summit Lake population

How many people live in Summit Lake

Summit Lake is home to 36,429 residents, according to the most recent Census data. Gender-wise, 48.5% of Summit Lake locals are male, and 51.5% are female.

Total population
36,429
1.5% year-over-year change
Gender ratio
Male
48.5%
17,678
Female
51.5%
18,752
Value Percent YoY change
Male 17,678 48.5% -0.5%
Female 18,752 51.5% 3.4%
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 Summit Lake is 41, with the population distributed as follows: about 15.6% are children under 15, then 11.6% are in the 15 to 24 age group. Adults between 25 and 44 make up 29.6% of the population, while another 24.1% fall into the 45 to 64 bracket. Finally, around 19.2% are 65 or older.

Median age
41
Age breakdown
Under 15
15.6%
15 to 24
11.6%
25 to 44
29.6%
45 to 64
24.1%
Over 65
19.2%
Value Percent YoY change
Under 15 5,677 15.6% 0.2%
15 to 24 4,215 11.6% -2.1%
25 to 44 10,788 29.6% 2.6%
45 to 64 8,766 24.1% 1.2%
Over 65 6,983 19.2% 3.5%
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 Summit Lake, 91.9% of the population are US-born citizens, while 5.9% have gained naturalized citizenship. At the same time, 2.2% of residents are non-citizens. As for race, 72.1% of locals are Caucasian, 3.3% are African American and 5.5% have Asian roots. Another 0.8% are Indigenous American, 0.3% are Pacific Islanders, while 4.1% identify as another race. There’s also a share of 14% that includes residents with two or more races.

Citizenship
U.S.-born citizens
91.9%
Non-U.S.-born citizens
5.9%
Non-citizens
2.2%
Value Percent YoY change
U.S.-born citizens 33,467 91.9% 1.5%
Non-U.S.-born citizens 2,152 5.9% 1.5%
Non-citizens 810 2.2% 2.0%
Racial breakdown
White
72.1%
Black or African American
3.3%
American Indian and Alaska Native
0.8%
Asian
5.5%
Native Hawaiian and other Pacific Islander
0.3%
Two or more races
14%
Other
4.1%
Value Percent
White 26,252 72.1%
Black or African American 1,204 3.3%
American Indian and Alaska Native 295 0.8%
Asian 2,005 5.5%
Native Hawaiian and other Pacific Islander 96 0.3%
Two or more races 5,086 14%
Other 1,491 4.1%

Households in Summit Lake

A peek inside Summit Lake households

Summit Lake has 14,840 households, with an average of 2 members in each. Of these, 63.5% are families, while the remaining 36.5% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
14,840
0.2% year-over-year change
Average people per household
2
Non-family households
5,420
Family households
9,420
Value Percent YoY change
Non-family households 5,420 36.5% -1.9%
Family households 9,420 63.5% 1.4%
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 Summit Lake

The housing landscape of Summit Lake

Summit Lake's housing consists of 15,546 units, with 63% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 4.3% 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 9.5% of the housing landscape.

Housing units
15,546
0.3% year-over-year change
Housing types
Value Percent
1 unit, detached 9,790 63%
1 unit, attached 670 4.3%
2 units 403 2.6%
3 or 4 units 680 4.4%
5 to 9 units 773 5%
10 to 19 units 557 3.6%
20 to 49 units 320 2.1%
50 or more units 798 5.1%
Mobile home 1,477 9.5%
Boat, RV, van, etc. 78 0.5%
Homes built since 2020
189
950.0% year-over-year change

The age of buildings in Summit Lake

In Summit Lake, the median construction year is 1990. About 4.6% of homes were built before the 1940s, with another 3.9% going up by 1949. Most development happened in the second half of the 20th century. Then, 18.4% of homes were added from 2000 to 2009, 14.7% between 2010 and 2019, and 1.2% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 709 4.6% 10.8%
Built between 1940 and 1949 603 3.9% 6.0%
Built between 1950 and 1959 477 3.1% -0.2%
Built between 1960 and 1969 958 6.2% -15.7%
Built between 1970 and 1979 2,608 16.8% -5.5%
Built between 1980 and 1989 2,227 14.3% -5.1%
Built between 1990 and 1999 2,617 16.8% 0.8%
Built between 2000 and 2009 2,868 18.4% 8.9%
Built between 2010 and 2019 2,291 14.7% -1.6%
Built in 2020 or later 189 1.2% 950.0%
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.

Summit Lake occupancy rates

Out of the 14,840 occupied housing units in Summit Lake, 65.6% are owner-occupied, while 34.4% are lived in by tenants. Meanwhile, 4.5% of all homes on the local market sit vacant.

Occupied housing units
14,840
0.2% year-over-year change
Occupancy breakdown
Renter occupied
5,103
Owner occupied
9,737
Value Percent YoY
change
Renter occupied 5,103 34.4% -3.0%
Owner occupied 9,737 65.6% 1.9%
Unoccupied housing units
4.5%
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.

Summit Lake housing costs

Housing costs in Summit Lake come to a median of $1,810 per month, while tenants specifically pay a median gross rent of $1,727.

Median housing costs per month
$1,810/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 Summit Lake
$1,727/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 Summit Lake

Summit Lake education at a glance

About 26.6% of the population in Summit Lake went to high school, while 22.4% pursued college studies. Another 10.1% earned an associate degree and 25.1% hold a bachelor’s. Meanwhile, 14.8% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 288 1% -13.5%
High school diploma 7,816 26.6% 10.7%
College diploma 6,559 22.4% -6.2%
Associate degree 2,967 10.1% -2.7%
Bachelor's degree 7,363 25.1% 4.3%
Graduate degree 4,348 14.8% 0.2%
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 Summit Lake

How much people earn in Summit Lake

The average annual household income in Summit Lake was $121,400 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +4% change from the previous year. At the same time, the median income stood at $96,868, reflecting a +7.1% shift over the same period.

Average household income in Summit Lake
$121,400/year
4.0% year-over-year change
Median household income in Summit Lake
$96,868/year
7.1% year-over-year change

Summit Lake income by age

In Summit Lake, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $101,222. Those with someone between 45 and 64 in charge, often well established professionally, earn $123,445 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $53,240, while those led by someone over 65, many of whom may be retired, have about $76,826 in earnings. Overall, 90.2% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $53,240 -2.4%
25 - 44 $101,222 16.8%
45 - 64 $123,445 -0.6%
Over 65 $76,826 0.7%
Above poverty level
32,152
Below poverty level
3,507
Value Percent YoY
change
Above poverty level 32,152 90.2% 1.9%
Below poverty level 3,507 9.8% -3.5%

Employment in Summit Lake

Workforce and job types in Summit Lake

83.7% of the working population are employed in professional or administrative positions, while 16.3% are in hands-on or service-based jobs. Also, 9.5% run their own businesses, 49.4% are employed by private companies, and 31.8% work in the public sector.

Workforce demographics

White collar
14,794
Blue collar
2,875
Value Percent YoY change
White collar 14,794 83.7% -0.3%
Blue collar 2,875 16.3% 4.8%
Employer type
Self employees
9.5%
Private companies
49.4%
Governmental workers
31.8%
Not for profit companies
9.4%
Value Percent YoY change
Self employees 1,678 9.5% -1.8%
Private companies 8,723 49.4% -0.5%
Governmental workers 5,616 31.8% 5.8%
Not for profit companies 1,652 9.4% -8.3%

Transportation in Summit Lake

How people get around in Summit Lake

In Summit Lake, the average commute time is 25 minutes. Commuting methods vary: 95% of residents travel by personal vehicle and 3.6% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
25 min
Means of transportation
Value Percent YoY change
Car 12,646 95% -6.5%
Taxicab 29 0.2% 11.5%
Bus or trolleybus 91 0.7% -48.6%
Motorcycle 5 0% -80.0%
Bicycle 70 0.5% 18.6%
Walk 473 3.6% 10.3%
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 Summit Lake by zipcode?

Zipcode Population Number of households Median income Average income
98502 35,398 14,791 $92,207 $115,390
98512 31,864 12,719 $101,530 $123,812

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FAQs about Summit Lake demographics 

What is the total population of Summit Lake?

Summit Lake has a total population of 36,429 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 +1.5% compared to a year ago.

What is the gender ratio in Summit Lake?

The gender ratio in Summit Lake is as follows:
  • 48.5% males (17,678 residents)
  • 51.5% females (18,752 residents)

What is the median age in Summit Lake?

The median age in Summit Lake is 41.

What is the age distribution of the population in Summit Lake?

The age distribution in Summit Lake is as follows:
  • Under 15: 15.6% (5,677 residents)
  • Ages 15-24: 11.6% (4,215 residents)
  • Ages 25-44: 29.6% (10,788 residents)
  • Ages 45-64: 24.1% (8,766 residents)
  • Over 65: 19.2% (6,983 residents)

What is the racial and ethnic makeup of Summit Lake?

The racial and ethnic makeup of Summit Lake is as follows:
  • White: 72.1% (26,252 residents)
  • Black or African American: 3.3% (1,204 residents)
  • American Indian and Alaska Native: 0.8% (295 residents)
  • Asian: 5.5% (2,005 residents)
  • Native Hawaiian and Other Pacific Islander: 0.3% (96 residents)
  • Two or More Races: 14% (5,086 residents)
  • Other: 4.1% (1,491 residents)

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

U.S.-born citizens represent 91.9% of the population in Summit Lake.

How many housing units are there in Summit Lake?

There are 15,546 housing units in Summit Lake, reflecting a +0.3% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Summit Lake has a total of 14,840 households, with an average of 2 people in each.

What is the median household income in Summit Lake?

Summit Lake has a median household income of $96,868, representing a +7.1% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Summit Lake?

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

Job types:
  • White-collar workers: 83.7% (14,794 residents)
  • Blue-collar workers: 16.3% (2,875 residents)

Places of employment:
  • Self-employed: 9.5% (1,678 residents)
  • Private companies: 49.4% (8,723 residents)
  • Governmental workers: 31.8% (5,616 residents)
  • Not-for-profit companies: 9.4% (1,652 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