Martha Lake, Washington Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Martha Lake, Washington is 22,740 as of the 2023 American Community Survey, making it the 62nd-largest city in Washington. The median household income is $132,130, the median home value is $725,400, and the median age is 33.9.
22,740
Population
4995
People / sq mi
$132,130
Median Income
$725,400
Median Home Value
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Martha Lake covers 4.6 sq mi of land at 4995 people per square mile.
About Martha Lake, WA
In Martha Lake, home values do the distinguishing — a median of $725,400. Martha Lake is a city in Washington with a population of 22,740.
Households take in a median $132,130, comfortably above the US median of $78,538. About 7.1% of residents live below the federal poverty level, below the national 12.4%. Real estate commands a premium here — a median home value of $725,400, with typical rent around $2,014.
Educational attainment is on the higher side for US cities — 47.5% of adults hold a four-year degree, above the national 35.0%. Remote work is on the higher side at 23.4%, above the national 14.0%, and the average commute runs about 29 minutes each way.
High housing values reframe the income picture in Martha Lake — even solid earnings stretch less against home prices and rents at this level.
Race & Ethnicity
| White | 53.8% |
| Black or African American | 5.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.8% |
| Two or More Races | 0.0% |
Economy & Income
$132,130
Median Household Income
$52,621
Per Capita Income
7.1%
Poverty Rate
3.3%
Unemployment Rate
Housing
$725,400
Median Home Value
$2,014
Median Rent
62.4%
Owner-Occupied
Education
92.7%
High School+
47.5%
Bachelor's+
Commute
1.3%
Drive Alone
63.7%
Public Transit
23.4%
Work From Home
28.5 min
Avg Commute
Community Profile
27.9%
Foreign Born
63.0%
Non-English at Home
5.1%
Veterans
8.5%
With Disability
96.2%
Health Insurance
99.0%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 22.6% |
| Finance, Insurance & Real Estate | 17.7% |
| Manufacturing | 10.7% |
| Construction | 7.8% |
| Education, Health Care & Social Services | 5.7% |
| Transportation & Warehousing | 5.5% |
| Information | 5.3% |
| Retail Trade | 4.5% |
| Arts, Entertainment & Food Services | 4.3% |
| Public Administration | 3.0% |
| Agriculture & Mining | 0.4% |
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Frequently Asked Questions
Martha Lake, Washington has a population of 22,740 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 62nd-largest city in Washington.
The median household income in Martha Lake, Washington is $132,130, with 7.1% of residents living below the federal poverty level.
The median home value in Martha Lake, Washington is $725,400, with median monthly rent at $2,014 and a homeownership rate of 62.4%.
The median age in Martha Lake, Washington is 33.9 years. The population is 49.6% male and 50.4% female.
Martha Lake Cdp, WA Climate
Martha Lake Cdp, WA has an average annual temperature of 10.6°C (51°F) and receives about 1108 mm of precipitation per year. The warmest month is August and the coldest is December. Figures are 1970–2000 climate normals.
10.6°C
Avg Temp
1108
Precip (mm/yr)
Aug
Hottest Month
Dec
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 4° / 40° | 139 mm |
| February | 6° / 42° | 106 mm |
| March | 7° / 45° | 114 mm |
| April | 10° / 49° | 87 mm |
| May | 13° / 55° | 68 mm |
| June | 15° / 60° | 57 mm |
| July | 18° / 64° | 34 mm |
| August | 18° / 65° | 37 mm |
| September | 15° / 59° | 59 mm |
| October | 11° / 51° | 96 mm |
| November | 6° / 44° | 153 mm |
| December | 4° / 39° | 158 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Martha Lake Cdp, WA
The most comfortable months to visit Martha Lake Cdp, WA are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is August (around 24°C high). The coldest is December (near 1°C low). December is usually the wettest month.
Where to stay near Martha Lake
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.