Zillah, WA Profile: Facts & Data


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Zillah, Washington - Basic Facts

The City of Zillah had a population of 3,374 as of July 1, 2020. Zillah ranks in the upper quartile for 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 Zillah is located at latitude 46.4021 and longitude -120.262 in Yakima County. The formal boundaries for the City of Zillah encompass a land area of 1.85 sq. miles and a water area of 0 sq. miles. Yakima County is in the Pacific time zone (GMT -8). The elevation is 817 feet.

The City of Zillah (GNIS ID: 2412331) 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 Zillah is located within Sunnyside Division of Yakima County.


Zillah, WA Data & Demographics (As of July 1, 2020)


Total Population 3,374 (100%)
Population in Households 3,374 (100.0%)
Population in Families 2,879 (85.3%)
Population in Group Quarters1 0
Population Density 1,857
Diversity Index2 82


Median Household Income $64,620
Average Household Income $78,643
% of Income for Mortgage4 15%
Per Capita Income $27,151
Wealth Index5 73


Total HU (Housing Units) 1,245 (100%)
Owner Occupied HU 834 (67.0%)
Renter Occupied HU 335 (26.9%)
Vacant Housing Units 76 ( 6.1%)
Median Home Value $227,232
Average Home Value $325,030
Housing Affordability Index3 159


Total Households 1,169
Average Household Size 2.89
Family Households 852
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.


2010-2020 2020-2025
Population 1.09% 0.95%
Households 1.02% 0.87%
Families 1.13% 0.85%
Median Household Income   1.82%
Per Capita Income   2.5%
Owner Occupied HU   1.33%


Zillah, WA - Peer Comparisons by Rank and Percentile

The table below compares Zillah to the other 625 incorporated cities, towns and CDPs in Washington by rank and percentile using July 1, 2020 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 # 244 61st
Population Density # 165 74th
Median Household Income # 295 53rd
Housing Affordability Index # 477 76th
Per Capita Income # 447 29th
Diversity Index # 21 96th

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

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