Tumwater, WA Profile: Facts, Map & Data


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Tumwater, Washington - Basic Facts

The City of Tumwater had a population of 19,834 as of July 1, 2017.

The primary coordinate point for Tumwater is located at latitude 46.989 and longitude -122.924 in Thurston County. The formal boundaries for the City of Tumwater (see map below) encompass a land area of 14.36 sq. miles and a water area of 0.13 sq. miles. Thurston County is in the Pacific time zone (GMT -8). The elevation is 174 feet.

The City of Tumwater (GNIS ID: 2412111) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Washington is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Tumwater is located within Olympia Division of Thurston County.

Beneath the boundary map are tables with Tumwater population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Tumwater: Des Chutes, Falls River, New Market, Spa-kwatl, Tumwater Falls.

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City of Tumwater, WA Boundary Map

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Boundary Maps: Olympia Division | Thurston County | Washington Counties

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Tumwater, WA Data & Demographics (As of July 1, 2017)


Total Population 19,834
Daytime Population: Workers 16,432
Daytime Population: Residents 10,212
Total Daytime Population (TDP) 26,644
Ratio TDP/Total Population1 1.34
Population in Households 19,187
Population in Familes 14,035
Population in Group Qrtrs 647
Population Density2 1,381
Diversity Index3 42


Median Household Income $66,657
Average Household Income $83,413
Per Capita Income $35,947


Total Housing Units 8,898 (100%)
Owner Occupied HU 4,603 (51.7%)
Renter Occupied HU 3,736 (42.0%)
Vacant Housing Units 559 ( 6.3%)
Median Home Value $268,262
Average Home Value $290,892


Total Households 8,339
Average Household Size 2.3
Family Households 4,911
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 1.85% 1.33%
Households 1.35% 1.28%
Families 1.34% 1.21%
Median Household Income   2.68%
Per Capita Income   2.46%

Tumwater, WA - Peer Comparisons by Rank and Percentile

The table below compares Tumwater to the other 627 incorporated cities, towns and CDPs in Washington by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 68 89th
Population Density # 219 65th
Diversity Index # 253 60th
Median Household Income # 202 68th
Per Capita Income # 164 74th

Additional comparisons and rankings can be made with a VERY EASY TO USE Washington Census Data Comparison Tool.

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