SeaTac, WA

Very High · 130

Washington · Population 31,143 · Updated March 2026

$1,637
Median Rent / Month
$76,517
Median Income
$483,200
Median Home Value
$1,701
Owner Costs / Month

Affordability

How far your income goes in SeaTac

25.7%
Rent-to-Income Ratio
Moderate
Rent takes 25-35% of median income — moderate affordability.

Tax Burden in Washington

State-level tax rates that affect your costs

0%
Income Tax (Top Rate)
6.5%
Sales Tax
0.92%
Property Tax Rate

Estimated Annual Costs

$19,644
Annual Rent
$0
State Income Tax
$4,445
Property Tax (est.)

Cost of Living Overview

SeaTac has a significantly higher cost of living than most US cities, driven largely by premium housing costs. With a cost index of 130 (where 100 equals the national median), SeaTac residents can expect to pay median rent of $1,637/month while earning a median household income of $76,517/year.

The median home value in SeaTac, WA is $483,200, with typical monthly owner costs around $1,701 including mortgage, insurance, and taxes. With a rent-to-income ratio of 25.7%, SeaTac falls within the generally affordable range, though it's approaching the 30% burden threshold.

Washington has no state income tax, which can represent significant savings compared to high-tax states. Combined with a 6.5% sales tax rate and 0.92% effective property tax rate, the overall tax environment helps keep costs manageable in SeaTac.

Frequently Asked Questions

Common questions about living costs in SeaTac

What is the cost of living in SeaTac, WA?
The cost of living index in SeaTac, WA is 130 (US average = 100). Median monthly rent is $1,637, median household income is $76,517/year, and the median home value is $483,200.
Is SeaTac, WA affordable?
No, SeaTac is more expensive than the national average with a cost index of 130. The rent-to-income ratio is 25.7%—below the 30%% threshold considered affordable by HUD.
What is the average rent in SeaTac, WA?
The median gross rent in SeaTac, WA is $1,637 per month according to the US Census Bureau ACS 2023 data. Annual rent costs approximately $19,644.
What is the median household income in SeaTac?
The median household income in SeaTac, WA is $76,517 per year. This compares to the national median of approximately $80,000.
What are the taxes like in Washington?
Washington has a top income tax rate of 0%, a sales tax of 6.5%, and an effective property tax rate of 0.92%. Notably, there is no state income tax.