Marietta-Alderwood Population

2011–2026

3,491

2026 projection

0.8% since 2020 (increase)

01K2K3K4K5K20122014201620182020202220242026

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Marietta-Alderwood. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20263,491-260.74%
20253,517-520.73%
20233,569+2658.02%
20223,304-39810.75%
20213,702+2396.90%
20203,463-62315.25%
20194,086+37810.19%
20183,708-78717.51%
20174,495+30.07%
20164,492-2124.51%

Showing 10 of 15 years.

Marietta-Alderwood Demographics

38.3median age

Median age

Female35.9 yrs
Male38.9 yrs

Adults

3,145
836 seniors · 27%2,309 other adults

Sex

Female 45.5% · 1,707Male 54.5% · 2,047

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 38 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Marietta-Alderwood Income

$76,019median household income

Median household income

$76,019

Half of households earn more, half earn less

Median earnings

$55,681

Typical yearly pay for a worker 25 or older.

Poverty rate

7.9%

About 1 in 13 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Marietta-Alderwood Marital Status

44% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married44%43%45%
Never married39%36%43%
Divorced12%17%6%
Widowed3%3%2%
Separated2%1%3%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201