Arlington vs Mill Creek

A side-by-side comparison of Arlington and Mill Creek: population, income, housing, and more.

Arlington and Mill Creek are places in Washington. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Mill Creek has the higher population (20,846 vs 20,599 in Arlington). Mill Creek has the higher median household income ($121,578 vs $84,919 in Arlington). Mill Creek has the higher median home value ($836,300 vs $492,600 in Arlington).

Population, income & housing

	Arlington	Mill Creek
Population	20,599	20,846
Median age	37.1 yrs	38.8 yrs
Median household income	$84,919	$121,578
Median home value	$492,600	$836,300
Median gross rent	$1,764	$2,197
Housing units	8,126	9,151
Homeownership rate	63.4%	59.8%
Bachelor's degree or higher	20.3%	53.7%
Unemployment rate	3.6%	4.5%

Trends (ACS 5-year, 2019–2023)

	Arlington	Mill Creek
Population	19,483 → 20,599 (+5.7%)	20,553 → 20,846 (+1.4%)
Median household income	$82,626 → $84,919 (+2.8%)	$103,750 → $121,578 (+17.2%)
Median home value	$323,200 → $492,600 (+52.4%)	$536,800 → $836,300 (+55.8%)
Median gross rent	$1,341 → $1,764 (+31.5%)	$1,812 → $2,197 (+21.2%)

Arlington

Population

19,48320,599

Median household income

$82,626$84,919

Median home value

$323,200$492,600

Median gross rent

$1,341$1,764

Mill Creek

Population

20,55320,846

Median household income

$103,750$121,578

Median home value

$536,800$836,300

Median gross rent

$1,812$2,197

Age & race/ethnicity

Age distribution (share)

	Arlington	Mill Creek
Under 5	6.1%	6.3%
5 to 17	19.0%	15.5%
18 to 24	9.2%	7.4%
25 to 34	11.2%	15.1%
35 to 44	15.3%	14.3%
45 to 54	13.9%	14.5%
55 to 64	11.4%	11.8%
65 to 74	7.7%	8.5%
75 and over	6.2%	6.5%

Race & ethnicity (share)

	Arlington	Mill Creek
White (non-Hispanic)	72.8%	60.9%
Black or African American	1.3%	4.4%
American Indian & Alaska Native	0.5%	0.2%
Asian	5.5%	20.6%
Native Hawaiian & Pacific Islander	0.3%	0.4%
Some other race	0.4%	0.0%
Two or more races	4.0%	5.4%
Hispanic or Latino	15.1%	8.0%

Educational attainment (age 25+)

Share of adults 25+

	Arlington	Mill Creek
No high school diploma	9.1%	3.7%
High school graduate	31.1%	11.3%
Some college or associate's	39.5%	31.3%
Bachelor's degree	14.0%	33.2%
Graduate or professional degree	6.3%	20.5%

Commute to work

How workers get to work (share)

	Arlington	Mill Creek
Drove alone	73.7%	57.8%
Carpooled	12.4%	8.1%
Public transit	0.8%	4.8%
Walked	1.5%	0.3%
Bicycle	0.2%	0.2%
Worked from home	11.1%	27.4%
Other means	0.3%	1.4%

Housing

Units in structure (share)

	Arlington	Mill Creek
1-unit, detached	62.2%	49.1%
1-unit, attached	7.4%	8.4%
2 to 4 units	5.7%	2.3%
5 to 19 units	11.5%	17.8%
20 or more units	8.5%	22.3%
Mobile home & other	4.7%	0.1%

Poverty & households

	Arlington	Mill Creek
Poverty rate	11.0%	4.9%
Average household size	2.71	2.45
Mean commute (minutes)	30	33
Median year structure built	1995	1995