Martha Lake, Washington Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Martha Lake, WA Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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A
Health Above average
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A
Income Above average
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A
Education Above average
Source: Map AI Methodology
Population
| Metric | Martha Lake | Washington Avg | U.S. Average |
|---|---|---|---|
| Population | 20,947 | 7,801,159 | 337,468,954 |
| Population density (per sq mi) | 4510.6 | 109.3 | 86.4 |
| Population growth (%/yr) | 2.16% | 1.21% | 0.59% |
| Median age | 35.6 | 36.2 | 37.3 |
| Households | 7,802 | 3,058,619 | 130,235,071 |
Population in Martha Lake grew by 30.9% from 2009 to 2024, reaching 20,947 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Martha Lake is Millennials, aged 29–44, at 28.8% of residents. That is 5.4 points above Washington as a whole.
- Gen Z 13–28 4,475 21.4% on par
- Millennials 29–44 6,028 28.8% +5.4 pts
- Gen X 45–60 4,039 19.3% -0.2 pts
- Boomers 61–79 2,385 11.4% -4.9 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Washington, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 50.1% of the people living in Martha Lake and men 49.9%.
- Women 50.1% Washington 49.7%
- Men 49.9% Washington 50.3%
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Economy
Martha Lake has a the economy index of A, which means it is very prosperous.
| Metric | Martha Lake | Washington Avg | U.S. Average |
|---|---|---|---|
| Median household income | $131,308 | $98,224 | $80,455 |
| Income growth (%/yr) | 6.23% | 5.64% | 4.80% |
| Unemployment rate | 3.3% | 5.0% | 5.2% |
The median household income in Martha Lake is about 34% higher than in Washington.
Housing
| Metric | Martha Lake | Washington Avg | U.S. Average |
|---|---|---|---|
| Median home price | $350,000 | $485,016 | $248,835 |
| Median rent | $2,260 | $1,759 | $1,407 |
| Homeownership rate | 63.0% | 63.8% | 65.2% |
The median home price in Martha Lake is about 12.9 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $2,260 per month for that long.
Commute Time & Mobility
Commuters in Martha Lake spend about 60 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 250 hours, about 10.4 full days, spent commuting.
| Metric | Martha Lake | Washington Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 30.0 | 22.4 | 22.4 |
| Round-trip commute (min) | 60.1 | 44.8 | 44.8 |
| Yearly time spent (hours) | 250 | 187 | 187 |
| Estimated yearly cost | $7,761 | $5,785 | $5,790 |
| Work from home | 27.0% | 19.8% | 15.0% |
| Highway traffic (vehicles/day) | 38,779 | 10,119 | 8,813 |
| Local road traffic (vehicles/day) | 4,027 | 1,525 | 1,355 |
The average commute time in Martha Lake is 30 minutes, longer than the 22 minutes in Washington.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Martha Lake has a education index of A, which means it is very educated.
| Metric | Martha Lake | Washington Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 43.0% | 35.1% | 31.6% |
| Average household size | 2.67 | 2.50 | 2.53 |
Health
Martha Lake has a health index of A, which means it is very healthy.
| Metric | Martha Lake | Washington Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 80.7 | 79.6 | 78.3 |
| Self-rated poor health | 10.2% | 15.4% | 16.3% |
| Smokers | 12.5% | 16.4% | 19.0% |
Martha Lake, WA Compared With Nearby Cities
How Martha Lake, WA compares with the 2 cities closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Martha Lake, WA | 20,947 | $131,308 #1/3 | $350,000 #3/3 | 30.0 min #3/3 |
| Mill Creek, WA | 22,980 | $130,559 | $523,527 | 28.8 min |
| North Lynnwood, WA | 23,579 | $101,654 | $450,009 | 27.8 min |
Frequently Asked Questions
Common questions about Martha Lake, Washington.
How many people live in Martha Lake, Washington?
About 20,947 people live in Martha Lake, Washington, in 7,802 households of 2.7 people on average. The median age is 35.6, so residents are younger than the U.S. median of 37.3 by about 2 years.
Is Martha Lake, Washington urban or rural?
Averaged over its land area, Martha Lake, Washington has 4,511 people per square mile, a density typical of a city. That is about 52 times the U.S. average of 86.
Can a typical household afford a home in Martha Lake, Washington?
The median home costs 2.7 times the median household income ($350,000 against $131,308), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $2,260 a month takes about 21% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is unemployment high in Martha Lake, Washington?
Unemployment in Martha Lake, Washington is only 3.3%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
How educated are people in Martha Lake, Washington?
43.0% of adults in Martha Lake, Washington hold a bachelor's degree or higher (about 1 in 2), well above the U.S. share of 31.6%.
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