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SeaTac, WA vs Vashon, WA

129
SeaTac
Washington
VS
-9.4%
142
Vashon
Washington

SeaTac is moderately more affordable than Vashon, with a 9.4% lower cost of living index. SeaTac scores 129 compared to 142 for Vashon, where the US average is 100. This difference means residents of Vashon can expect to pay noticeably more for everyday expenses, housing, and services.

On the housing front, median rent in SeaTac is $1,637/month compared to $1,444/month in Vashon — a 13% difference. Interestingly, home values tell a different story: while Vashon has cheaper rent, SeaTac actually has lower median home values ($483,200 vs $717,700).

Median household income in SeaTac is $76,517 compared to $115,750 in Vashon (-33.9%). While Vashon is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of SeaTac spend roughly 25.7% of their income on rent, more than the 15% in Vashon.

Climate-wise, both cities share similar average temperatures (53.7°F vs 53.7°F). Vashon receives more rainfall at 39.3" per year compared to 39.3" in SeaTac.

Income & Cost

Cost of Living Index
SeaTac
129
9% cheaper
Vashon
142
Median Household Income
SeaTac
$76,517
Vashon
$115,750
34% higher

Housing

Median Rent
SeaTac
$1,637
Vashon
$1,444
12% cheaper
Median Home Value
SeaTac
$483,200
33% cheaper
Vashon
$717,700
Population
SeaTac
31,143
Vashon
10,424

Salary Equivalency Calculator

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Everyday Prices

BLS Average Prices by metro area

Gasoline (regular)
SeaTac $3.31
Vashon $3.31
US $3.07
🥚
Eggs (grade A, large)
SeaTac $2.70
Vashon $2.70
US $2.50
🥛
Milk (whole)
SeaTac $4.35
Vashon $4.35
US $4.03
🍞
Bread (white)
SeaTac $2.00
Vashon $2.00
US $1.85
🍗
Chicken breast
SeaTac $4.48
Vashon $4.48
US $4.14
Electricity
SeaTac $0.16
Vashon $0.16
US $0.19

Climate

NOAA 30-year normals (1991-2020)

Avg Temp
SeaTac 53.7°F
Vashon 53.7°F
Summer High
SeaTac 77°F
Vashon 77°F
Winter Low
SeaTac 38°F
Vashon 38°F
Rainfall
SeaTac 39.3"
Vashon 39.3"
Rainy Days
SeaTac 156d
Vashon 156d