Martha Lake is a census-designated place (CDP) in Snohomish County, Washington, United States. The population was 21,129 at the 2020 census. It lies west of Mill Creek and northeast of Lynnwood, near the lake of the same name.

Based on per capita income, Martha Lake ranks 95th of 522 areas in the state of Washington to be ranked.

Geography

Martha Lake is located at (47.850802, -122.239296).

According to the United States Census Bureau, the CDP has a total area of 4.7&nbsp;square miles (12.2&nbsp;km<sup>2</sup>), of which, 4.6&nbsp;square miles (11.9&nbsp;km<sup>2</sup>) of it is land and 0.1&nbsp;square miles (0.2&nbsp;km<sup>2</sup>) of it (1.65%) is water.

Demographics

2020 census

As of the 2020 census, Martha Lake had a population of 21,660. The median age was 34.8 years. 23.8% of residents were under the age of 18 and 10.7% of residents were 65 years of age or older. For every 100 females there were 98.1 males, and for every 100 females age 18 and over there were 97.5 males age 18 and over.

There were 7,705 households in Martha Lake, of which 36.7% had children under the age of 18 living in them. Of all households, 54.6% were married-couple households, 16.0% were households with a male householder and no spouse or partner present, and 20.9% were households with a female householder and no spouse or partner present. About 18.8% of all households were made up of individuals and 4.8% had someone living alone who was 65 years of age or older.

! Race !! Number !! Percent

|-

| White || 11,955 || 55.2%

|-

| Black or African American || 936 || 4.3%

|-

| American Indian and Alaska Native || 131 || 0.6%

|-

| Asian || 4,421 || 20.4%

|-

| Native Hawaiian and Other Pacific Islander || 174 || 0.8%

|-

| Some other race || 1,403 || 6.5%

|-

| Two or more races || 2,640 || 12.2%

|-

| Hispanic or Latino (of any race) || 2,832 || 13.1%

|}

2000 census

As of the census

References