Mountlake Terrace, WA

Census ZIP code profile for Mountlake Terrace, WA — 1 ZIPs, total population 19,943. Median income, home value, education, commute, and demographics from the U.S. Census Bureau American Community Survey 2023 5-Year Estimates.

2026 data Public-data reference. official source

Source:

Mountlake Terrace, WA is covered by 1 USPS ZIP code serving a combined population of 19,943 according to Census ACS 5-Year Estimates. U.S. cities rarely map cleanly to a single ZIP — Mountlake Terrace splits its residents across 1 delivery areas, each with its own demographic and housing profile. The table below lists every ZIP by population, so you can see which neighborhoods carry the weight of the city total and which are smaller pockets of the same municipal boundary.

Aggregated across every ZIP in Mountlake Terrace, the median household income averages $107,687 and per-capita income averages $59,449. Poverty rate runs at 7.0% and unemployment at 4.2%. On housing, the average median home value is $667,100 with median rent of $2,004 per month, and 56.8% of occupied units are owner-occupied. These are arithmetic averages across the 1 ZIP — not population-weighted — so small ZIPs influence the headline numbers the same as large ones.

Use this city view to compare ZIPs inside Mountlake Terrace against each other rather than hunting for a single "city average." The Affordability Dashboard linked below combines these Census inputs with HUD Fair Market Rents, FBI crime data, and Department of Labor childcare costs into a graded scorecard for Mountlake Terrace as a whole, while individual ZIP pages show fine-grained household income, housing profile, education attainment, commute time, and nearby-ZIP benchmarks. Every field on this page is sourced directly from U.S. Census Bureau ACS 2023 5-Year Estimates — no estimates, no proprietary scoring, no editorial adjustment.

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1

ZIP Codes

19,943

Population

$107,687

Median Income

$667,100

Median Home Value

38.3

Median Age

How much do residents of Mountlake Terrace earn?

Median Household Income
$107,687
Per Capita Income
$59,449
Unemployment Rate
4.2%
Poverty Rate
7.0%

What does housing look like in Mountlake Terrace?

Median Home Value
$667,100
Median Rent
$2,004/mo
Owner Occupied
56.8%
Housing Units
10,198

Who lives in Mountlake Terrace?

Bachelor's Degree+
42.9%
High School+
64.5%
Avg Commute
28 min
Foreign Born
18.6%

ZIP Codes in Mountlake Terrace, WA

ZIP Code Population Density Timezone
98043 19,943 1,883 America/Los_Angeles

Frequently Asked Questions

How many ZIP codes are in Mountlake Terrace, WA?
Mountlake Terrace, WA has 1 ZIP code with a combined population of 19,943, based on Census ACS 2023 data.
What is the median household income in Mountlake Terrace?
The average median household income across Mountlake Terrace, WA ZIP codes is $107,687. The poverty rate is 7.0%.
What is the cost of living in Mountlake Terrace?
The average median home value in Mountlake Terrace, WA is $667,100. Median rent is $2,004/month. 56.8% of homes are owner-occupied.

Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023). Verify with Census Bureau →

Source: HUD USPS Crosswalk (ZIP-to-county mapping) and Source: simplemaps.com (ZIP coordinates & timezones). Verify with HUD →

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the U.S. Census Bureau American Community Survey (ACS). Consult a qualified professional before making decisions based on this data.