In 2023, the population of the Seattle-Tacoma-Bellevue metropolitan area in the United States was about 4.04 million people. This was a slight decrease from the previous year, when the population was about 4.03 million.

Graph and download economic data for Resident Population in Seattle-Tacoma-Bellevue, WA (MSA) (STWPOP) from 2000 to 2024 about Seattle, WA, residents, population, and USA.

Historical dataset of population level and growth rate for the Seattle metro area from 1950 to 2025.

In 2023, the GDP of the Seatle-Tacoma-Bellevue metro area amounted to ****** billion U.S. dollars, an increase from the previous year. The GDP of the United States since 1990 can be accessed here. Seattle metro area The Seattle metropolitan area in the U.S. state of Washington includes the city of Seattle, King County, Snohomish County, and Pierce County within the Puget Sound region. About **** million people were living in the Seattle metro area, which is more than half of Washington's total population in 2021 (about **** million people). This makes the Seattle metro area the **** largest metropolitan area in the United States, by population. However, Seattle is in fourth place among the 20 largest metro areas in terms of household income, which stood at ****** U.S. dollars in 2019. This is by far more than the average household income in the United States. Household income in Washington is on a similar high level. In 2021, the federal state of Washington was ranked **** in terms of household income among the states of the U.S. The city of Seattle is the largest city in the Pacific Northwest region of North America. It has about ******* residents and is among the ** largest cities in the United States. Seattle has always been an important coastal seaport city and a gateway to Alaska. The importance of the city and metro area is also due to fact that some of the biggest companies worldwide started in Seattle during the 1980s. Companies like Amazon and Microsoft are still based in the Seattle area in the state of Washington.

About this dataset

Context

The dataset tabulates the Seattle population over the last 20 plus years. It lists the population for each year, along with the year on year change in population, as well as the change in percentage terms for each year. The dataset can be utilized to understand the population change of Seattle across the last two decades. For example, using this dataset, we can identify if the population is declining or increasing. If there is a change, when the population peaked, or if it is still growing and has not reached its peak. We can also compare the trend with the overall trend of United States population over the same period of time.

Key observations

In 2023, the population of Seattle was 755,078, a 0.79% increase year-by-year from 2022. Previously, in 2022, Seattle population was 749,134, an increase of 2.37% compared to a population of 731,757 in 2021. Over the last 20 plus years, between 2000 and 2023, population of Seattle increased by 190,969. In this period, the peak population was 755,078 in the year 2023. The numbers suggest that the population has not reached its peak yet and is showing a trend of further growth. Source: U.S. Census Bureau Population Estimates Program (PEP).

Content

When available, the data consists of estimates from the U.S. Census Bureau Population Estimates Program (PEP).

Data Coverage:

• From 2000 to 2023

Variables / Data Columns

• Year: This column displays the data year (Measured annually and for years 2000 to 2023)
• Population: The population for the specific year for the Seattle is shown in this column.
• Year on Year Change: This column displays the change in Seattle population for each year compared to the previous year.
• Change in Percent: This column displays the year on year change as a percentage. Please note that the sum of all percentages may not equal one due to rounding of values.

Good to know

Margin of Error

Data in the dataset are based on the estimates and are subject to sampling variability and thus a margin of error. Neilsberg Research recommends using caution when presening these estimates in your research.

Custom data

If you do need custom data for any of your research project, report or presentation, you can contact our research staff at research@neilsberg.com for a feasibility of a custom tabulation on a fee-for-service basis.

Inspiration

Neilsberg Research Team curates, analyze and publishes demographics and economic data from a variety of public and proprietary sources, each of which often includes multiple surveys and programs. The large majority of Neilsberg Research aggregated datasets and insights is made available for free download at https://www.neilsberg.com/research/.

Recommended for further research

This dataset is a part of the main dataset for Seattle Population by Year. You can refer the same here

Graph and download economic data for Employed Persons in Seattle-Tacoma-Bellevue, WA (MSA) (LAUMT534266000000005) from Jan 1994 to Aug 2025 about Seattle, WA, household survey, persons, employment, and USA.

A dataset listing Washington cities by population for 2024.

Data files

A set of 3 data files needs to be in the same directory as the executable to specify a population for FluTE. The file names consist of a prefix (e.g., "seattle") followed by a suffix.

*-tracts.dat - Tract populations and locations, from http://www.census.gov/geo/www/cenpop/cntpop2k.html. The columns in this comma-delimited file are: state FIPS code, county FIPS code, tract FIPS code, tract population, tract longitude, and tract latitude.

*-wf.dat - Tract-to-tract workerflow, extracted from stp64.us from Census 2000 Special Tabulation Product 64: Census tract of work by census tract of residence 2000. For the US-level data. Commutes over 100 miles were eliminated from the data. The columns in this space- delimited file are: home state FIPS code, home county FIPS code, home tract FIPS code, work state FIPS code, work county FIPS code, work tract FIPS code, and number of workers.

*-employment.dat - The number of employed working-age adults and the total number of working-age adults, from the Census Summary File 3 (SF3, Table PCT35). The columns in this space-delimited file are: state FIPS code, county FIPS code, tract FIPS code, number of employed 20-64 year olds, and the total number of working-age individuals (19-64 year olds).

This sample population is:

seattle - metropolitan Seattle, based on the 2000 US Census.

Graph and download economic data for Civilian Labor Force in Seattle-Tacoma-Bellevue, WA (MSA) (LAUMT534266000000006A) from 1994 to 2024 about Seattle, WA, civilian, labor force, labor, household survey, and USA.

Graph and download economic data for Unemployment Rate in Seattle-Tacoma-Bellevue, WA (MSA) (LAUMT534266000000003A) from 1994 to 2024 about Seattle, WA, household survey, unemployment, rate, and USA.

Data from: Cities can grow without harming lakes: Lake Washington has become less eutrophic despite rapid population growth

Dataset DOI: 10.5061/dryad.dfn2z35fj

Description of the data and file structure

This contains the water-quality data associated with the following manuscript:

Nidzgorski, Daniel A. and DeGasperi, Curtis L. (2025). Cities can grow without harming lakes: Lake Washington has become less eutrophic despite rapid population growth. Ecosphere.

For questions or requests, please contact Daniel Nidzgorski at dnidz@civiceco.org, and we would appreciate it if you cited.

Files and variables

File: LakeWashingtonWaterQuality1998-2022.csv

Description: These water-quality data were collected from Lake Washington (Seattle area, USA; 47.6° N, 122.3° W) by King County's long-term monitoring program. This dataset includes data from 1998-2022 from the Madison Park 0852 monitoring location at one of the dee...

Graph and download economic data for Unemployed Persons in Seattle-Tacoma-Bellevue, WA (MSA) (LAUMT534266000000004A) from 1994 to 2024 about Seattle, WA, household survey, persons, unemployment, and USA.

In 2022, San Francisco had the highest median household income of cities ranking within the top 25 in terms of population, with a median household income in of 136,692 U.S. dollars. In that year, San Jose in California was ranked second, and Seattle, Washington third.

Following a fall after the great recession, median household income in the United States has been increasing in recent years. As of 2022, median household income by state was highest in Maryland, Washington, D.C., Utah, and Massachusetts. It was lowest in Mississippi, West Virginia, and Arkansas. Families with an annual income of 25,000 and 49,999 U.S. dollars made up the largest income bracket in America, with about 25.26 million households.

Data on median household income can be compared to statistics on personal income in the U.S. released by the Bureau of Economic Analysis. Personal income rose to around 21.8 trillion U.S. dollars in 2022, the highest value recorded. Personal income is a measure of the total income received by persons from all sources, while median household income is “the amount with divides the income distribution into two equal groups,” according to the U.S. Census Bureau. Half of the population in question lives above median income and half lives below. Though total personal income has increased in recent years, this wealth is not distributed throughout the population. In practical terms, income of most households has decreased. One additional statistic illustrates this disparity: for the lowest quintile of workers, mean household income has remained more or less steady for the past decade at about 13 to 16 thousand constant U.S. dollars annually. Meanwhile, income for the top five percent of workers has actually risen from about 285,000 U.S. dollars in 1990 to about 499,900 U.S. dollars in 2020.