Mill Creek, WA Profile: Facts & Data

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Mill Creek, Washington - Basic Facts

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The City of Mill Creek had a population of 21,314 as of July 1, 2021. Mill Creek 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 Mill Creek is located at latitude 47.8601 and longitude -122.2043 in Snohomish County. The formal boundaries for the City of Mill Creek encompass a land area of 4.66 sq. miles and a water area of 0.01 sq. miles. Snohomish County is in the Pacific time zone (GMT -8). The elevation is 417 feet.

The City of Mill Creek 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 Mill Creek is located within Edmonds Division of Snohomish County.


Jump to... (On This Page!)
  1. Mill Creek 2021 Demographic Data
  2. Growth Rates for Mill Creek (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
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Mill Creek, WA Data & Demographics (As of July 1, 2021)

POPULATION

Total Population 21,314 (100%)
Population in Households 21,305 (100.0%)
Population in Families 17,127 (80.4%)
Population in Group Quarters1 9 ( 0.0%)
Population Density 4,590
Diversity Index2 58
 
 

INCOME

Median Household Income $108,810
Average Household Income $135,638
% of Income for Mortgage4 22%
Per Capita Income $54,927
Wealth Index5 167
 

HOUSING

Total HU (Housing Units) 8,980 (100%)
Owner Occupied HU 5,709 (63.6%)
Renter Occupied HU 2,996 (33.4%)
Vacant Housing Units 276 ( 3.1%)
Median Home Value $559,861
Average Home Value $600,653
Housing Affordability Index3 112
 

HOUSEHOLDS

Total Households 8,704
Average Household Size 2.45
Family Households 5,672
Average Family Size 3
NOTES
  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.

GROWTH RATE / YEAR

2010-2021 2021-2026
Population 1.4% 1.5%
Households 1.28% 1.44%
Families 1.28% 1.43%
Median Household Income   1.83%
Per Capita Income   2.11%
Owner Occupied HU   1.75%

Mill Creek, WA - Peer Comparisons by Rank and Percentile

The table below compares Mill Creek 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 # 71 89th
Population Density # 27 96th
Median Household Income # 75 88th
Housing Affordability Index # 277 44th
Per Capita Income # 54 92nd
Diversity Index # 136 78th

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

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