Mattawa, WA Profile: Facts, Map & Data


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Mattawa, Washington - Basic Facts

The City of Mattawa had a population of 4,476 as of July 1, 2017. Mattawa ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Washington. See peer rankings below.

The primary coordinate point for Mattawa is located at latitude 46.7364 and longitude -119.9023 in Grant County. The formal boundaries for the City of Mattawa (see map below) encompass a land area of 0.74 sq. miles and a water area of 0 sq. miles. Grant County is in the Pacific time zone (GMT -8). The elevation is 768 feet.

The City of Mattawa (GNIS ID: 2412963) 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 Mattawa is located within Mattawa-Royal City Division of Grant County.

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

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City of Mattawa, WA Boundary Map

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Boundary Maps: Mattawa-Royal City Division | Grant County | Washington Counties

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


Total Population 4,476
Daytime Population: Workers 810
Daytime Population: Residents 2,421
Total Daytime Population (TDP) 3,231
Ratio TDP/Total Population1 0.72
Population in Households 4,476
Population in Familes 3,905
Population in Group Qrtrs 0
Population Density2 6,014
Diversity Index3 82


Median Household Income $33,989
Average Household Income $45,090
Per Capita Income $8,501


Total Housing Units 843 (100%)
Owner Occupied HU 291 (34.5%)
Renter Occupied HU 495 (58.7%)
Vacant Housing Units 56 ( 6.6%)
Median Home Value $98,558
Average Home Value $116,237


Total Households 787
Average Household Size 5.69
Family Households 716
Average Family Size 5
  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 0.12% 0.08%
Households -0.07% 0.05%
Families -0.17% 0.06%
Median Household Income   2.91%
Per Capita Income   3.67%

Mattawa, WA - Peer Comparisons by Rank and Percentile

The table below compares Mattawa 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 # 200 68th
Population Density # 7 99th
Diversity Index # 22 97th
Median Household Income # 605 4th
Per Capita Income # 627 0th

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

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