City rankings
Largest Cities in Washington
Seattle ranks #1 in Washington for largest cities at 754,195.
This ranking orders all 50 qualifying Washington cities by population, computed directly from the U.S. Census Bureau's American Community Survey and CDC PLACES datasets, never a blended or proprietary score. It is one of 9 single-metric rankings Areazine publishes for Washington, each answering one direct question from official federal data. Compare Seattle's standing against every other Washington city ranked below.
- 50
- Cities ranked
- 754,195
- #1 Seattle
- 25,453
- Lowest, Mill Creek East
What this Washington ranking shows
According to the U.S. Census Bureau's American Community Survey (ACS) 5-year estimates, the CDC PLACES population-level health analysis, and the CMS Hospital Compare quality data, Areazine ranks U.S. cities across more than 19,000 incorporated places, census-designated places, and consolidated city-county governments. State-level city rankings combine these federal datasets to produce intra-state comparisons across demographics, economics, health outcomes, and hospital quality.
Seattle leads 50 Washington cities at 754,195, while Mill Creek East sits at the bottom with 25,453 - a total spread of 728,742 on population. The top 5 occupy 83% of that range, indicating a wide separation between leaders and the rest of the field.
The median Washington city in this list sits at 51,513, 702,682 behind Seattle. See our methodology for ranking construction, data vintage, refresh cadence, and the federal upstream tables we join, and triangulate via the 8 other Washington rankings below, cities that lead on multiple lenses are the most robust signals.
Top 5 - Largest Cities
Does population track with city size?
Largest Cities vs. population, top 25 ranked cities
Largest Cities 50
More Washington Rankings 8
Reading this Washington ranking responsibly
Single-metric rankings are useful precisely because they are honest about what they measure. A "highest income" ranking does not tell you that the top-ranked city is the best place to live in Washington; it tells you that, among cities of population ten thousand and above in Washington that have a published median household income field in the most recent American Community Survey five-year estimates, this city has the highest such value. That precise definition matters, because composite "best places" lists from real-estate marketing sites and lifestyle magazines often combine income with subjective weights on schools, walkability, and amenities, producing a score whose components are not disclosed and whose ordering is not reproducible. Areazine's editorial commitment is to keep the underlying field, source, and vintage visible so the reader can audit any rank in this list against the canonical federal record.
Cross-checking against other rankings is a useful sanity test. A city that appears in the top ten on three or more different rankings, for example, highest income, most educated, and lowest poverty, is showing a robust signal across multiple independent dimensions. A city that appears in the top ten on only one ranking and middling on the others is showing a narrower signal, often driven by a single statistical artifact (a small population pulling the per-capita measure, a recent acquisition spike inflating median home value, an outlier survey year). The other nine Washington rankings linked above provide that cross-check at zero extra effort.
Data Sources
Population and economic data from the Census Bureau American Community Survey (2024 5-year estimates). Health data from the CDC PLACES (2023). Ranking computations use U.S. Census Bureau reference geographies. Crime statistics, where referenced, originate from the FBI Uniform Crime Reporting program (also accessible via the Crime Data Explorer).
Read our methodology - how this data is sourced, computed, and verified.