Martha Lake, WA Profile: Facts, Map & Data


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Martha Lake, Washington - Basic Facts

The Martha Lake Census Designated Place had a population of 19,131 as of July 1, 2017. Martha Lake 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 Martha Lake is located at latitude 47.8447 and longitude -122.2331 in Snohomish County. The formal boundaries for the Martha Lake Census Designated Place (see map below) encompass a land area of 4.55 sq. miles and a water area of 0.09 sq. miles. Snohomish County is in the Pacific time zone (GMT -8). The elevation is 469 feet.

The Martha Lake Census Designated Place (GNIS ID: 2408186) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

Washington is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Martha Lake Census Designated Place is located within Edmonds Division of Snohomish County.

Beneath the boundary map are tables with Martha Lake 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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Martha Lake Census Designated Place, WA Boundary Map

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Boundary Maps: Edmonds Division | Snohomish County | Washington Counties

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


Total Population 19,131
Daytime Population: Workers 1,831
Daytime Population: Residents 9,539
Total Daytime Population (TDP) 11,370
Ratio TDP/Total Population1 0.59
Population in Households 19,079
Population in Familes 15,548
Population in Group Qrtrs 52
Population Density2 4,206
Diversity Index3 60


Median Household Income $78,379
Average Household Income $102,317
Per Capita Income $37,497


Total Housing Units 7,219 (100%)
Owner Occupied HU 4,360 (60.4%)
Renter Occupied HU 2,563 (35.5%)
Vacant Housing Units 297 ( 4.1%)
Median Home Value $388,805
Average Home Value $433,429


Total Households 6,922
Average Household Size 2.76
Family Households 4,892
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 2.97% 2.41%
Households 2.93% 2.37%
Families 2.58% 2.26%
Median Household Income   1.94%
Per Capita Income   2.47%

Martha Lake, WA - Peer Comparisons by Rank and Percentile

The table below compares Martha Lake 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 # 77 88th
Population Density # 36 94th
Diversity Index # 115 82nd
Median Household Income # 139 78th
Per Capita Income # 142 78th

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

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