Arlington, Washington Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Arlington, Washington is 20,599 as of the 2023 American Community Survey, making it the 73rd-largest city in Washington. The median household income is $84,919, the median home value is $492,600, and the median age is 37.1.
The population has grown 22.0% since 2010 (18,002 → 21,959).
20,599
Population
2066
People / sq mi
$84,919
Median Income
$492,600
Median Home Value
Arlington covers 10.0 sq mi of land at 2066 people per square mile.
About Arlington, WA
Arlington is a city in Washington with a population of 20,599. It ranks #73 among cities in Washington by population. The median age is 37.1, younger than the national median. The population is 50.0% male and 50.0% female.
The median household income in Arlington is $84,919, above the US median of $74,580. 7.0% of residents live below the federal poverty level. Home values sit at a median of $492,600, with monthly rent averaging $1,764. The homeownership rate of 63.4% is close to the national rate of 64.8%.
Educational attainment in Arlington reflects 20.3% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 11.1% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 30.4 minutes each way.
Arlington city Population History (2010-2024)
The city of Arlington city had a population of 18,002 in 2010 and 21,959 in 2024, a 22.0% growth over 14 years. The peak was 21,959 in 2024. Average annual growth rate: 1.44%.
21,959
Population (2024)
18,002
Population (2010)
21,959
Peak (2024)
1.44%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 18,002 |
| 2011 | 18,057 |
| 2012 | 18,292 |
| 2013 | 18,612 |
| 2014 | 18,755 |
| 2015 | 18,868 |
| 2016 | 19,080 |
| 2017 | 19,232 |
| 2018 | 19,764 |
| 2019 | 20,523 |
| 2020 | 20,045 |
| 2021 | 20,786 |
| 2022 | 21,227 |
| 2023 | 21,416 |
| 2024 | 21,959 |
Race & Ethnicity
| White | 75.6% |
| Black or African American | 1.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.0% |
| Two or More Races | 0.2% |
Economy & Income
$84,919
Median Household Income
$43,023
Per Capita Income
7.0%
Poverty Rate
2.3%
Unemployment Rate
Housing
$492,600
Median Home Value
$1,764
Median Rent
63.4%
Owner-Occupied
Education
90.9%
High School+
20.3%
Bachelor's+
Commute
0.8%
Drive Alone
73.7%
Public Transit
11.1%
Work From Home
30.4 min
Avg Commute
Community Profile
31.1%
Foreign Born
84.3%
Non-English at Home
12.7%
Veterans
14.5%
With Disability
93.2%
Health Insurance
97.0%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 19.1% |
| Manufacturing | 16.4% |
| Education, Health Care & Social Services | 10.8% |
| Construction | 10.5% |
| Finance, Insurance & Real Estate | 8.0% |
| Retail Trade | 6.2% |
| Public Administration | 4.5% |
| Information | 4.5% |
| Arts, Entertainment & Food Services | 3.7% |
| Agriculture & Mining | 1.2% |
| Transportation & Warehousing | 1.1% |
Largest cities in Washington
Largest counties in Washington
Part of Washington
Metro areas in Washington
City rankings
Frequently Asked Questions
Arlington, Washington has a population of 20,599 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 73rd-largest city in Washington.
The median household income in Arlington, Washington is $84,919, with 7.0% of residents living below the federal poverty level.
The median home value in Arlington, Washington is $492,600, with median monthly rent at $1,764 and a homeownership rate of 63.4%.
The median age in Arlington, Washington is 37.1 years. The population is 50.0% male and 50.0% female.
The population has grown 22.0% since 2010 (18,002 → 21,959).
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Statewide data for Washington
Population, race, income, age, and trends across Washington
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.