Sumas, WA Profile: Facts & Data


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Sumas, Washington - Basic Facts

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The City of Sumas had a population of 1,954 as of July 1, 2021.

The primary coordinate point for Sumas is located at latitude 49.0001 and longitude -122.2649 in Whatcom County. The formal boundaries for the City of Sumas encompass a land area of 1.48 sq. miles and a water area of 0 sq. miles. Whatcom County is in the Pacific time zone (GMT -8). The elevation is 43 feet.

The City of Sumas 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 Sumas is located within Sumas Division of Whatcom County.

Alternate Unofficial Names for Sumas: Sumas City.

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  1. Sumas 2021 Demographic Data
  2. Growth Rates for Sumas (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Washington Research Tools (Easy Tools & Current Data)
  3. Washington Data Comparison Tool - 2021 Demographics

Sumas, WA Data & Demographics (As of July 1, 2021)


Total Population 1,954 (100%)
Population in Households 1,954 (100.0%)
Population in Families 1,638 (83.8%)
Population in Group Quarters1 0
Population Density 1,330
Diversity Index2 53


Median Household Income $56,678
Average Household Income $70,906
% of Income for Mortgage4 21%
Per Capita Income $25,652
Wealth Index5 59


Total HU (Housing Units) 773 (100%)
Owner Occupied HU 480 (62.1%)
Renter Occupied HU 243 (31.4%)
Vacant Housing Units 51 ( 6.6%)
Median Home Value $276,220
Average Home Value $364,657
Housing Affordability Index3 127


Total Households 722
Average Household Size 2.71
Family Households 508
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. 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 races 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.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2021 2021-2026
Population 3.63% 2.57%
Households 3.64% 2.53%
Families 3.91% 2.51%
Median Household Income   0.55%
Per Capita Income   3.22%
Owner Occupied HU   3.02%

Sumas, WA - Peer Comparisons by Rank and Percentile

The table below compares Sumas to the other 625 incorporated cities, towns and CDPs in Washington by rank and percentile using July 1, 2021 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 # 318 49th
Population Density # 236 62nd
Median Household Income # 421 33rd
Housing Affordability Index # 391 63rd
Per Capita Income # 516 18th
Diversity Index # 182 71st

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

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