Oso, WA Profile: Facts, Map & Data


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Oso, Washington - Basic Facts

The Oso Census Designated Place had a population of 184 as of July 1, 2016. Oso ranks in the lower 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 Oso is located at latitude 48.2874 and longitude -121.9251 in Snohomish County. The formal boundaries for the Oso Census Designated Place (see map below) encompass a land area of 2.83 sq. miles and a water area of 0.02 sq. miles. Snohomish County is in the Pacific time zone (GMT -8). The elevation is 207 feet.

The Oso Census Designated Place (GNIS ID: 2409003) 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 Oso Census Designated Place is located within Arlington Division of Snohomish County.

Beneath the boundary map are tables with Oso population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Oso: Allen.

Neighborhood Data

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Oso Census Designated Place, WA Boundary Map

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Boundary Maps: Arlington Division | Snohomish County | Washington Counties

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Oso, WA Data & Demographics (As of July 1, 2016)


Total Population 184
Population in Households 184
Population in Familes 157
Population in Group Qrtrs 0
Population Density1 65
Diversity Index2 23


Total Households 63
Average Household Size 2.92
Family Households 48
Average Family Size 3


Total Housing Units 72 (100%)
Owner Occupied HU 49 (68.1%)
Renter Occupied HU 14 (19.4%)
Vacant Housing Units 9 (12.5%)
Median Home Value $372,222
Average Home Value $418,229


Median Household Income $58,113
Average Household Income $84,378
Per Capita Income $30,538
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.35% 0.75%
Households 0.26% 0.63%
Families 0.0% 0.41%
Median Household Income   2.79%
Per Capita Income   2.7%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Oso, WA - Peer Comparisons by Rank and Percentile

The table below compares Oso to the other 627 incorporated cities, towns and CDPs in Washington by rank and percentile using July 1, 2016 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 # 566 10th
Population Density1 # 594 5th
Diversity Index2 # 502 20th
Median Household Income # 255 59th
Per Capita Income # 222 65th

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

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