Oso Flag

Oso

County Seat:
No
Area (mi²):
2.804
State:
Washington

Oso is a CDP located in Snohomish County, Washington. Oso has a 2026 population of 451. Oso is currently growing at a rate of 3.92% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in Oso is $140,486 with a poverty rate of 0%. The median age in Oso is 40.2 years: 21.6 years for males, and 46.1 years for females. For every 100 females there are 166.3 males.

451
Total Population
161
Density (mi²)
17 3.92%
Growth

Oso Population

Oso Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026451173.92%
2025434174.08%

Median Age

Overall: 40.2 years
Female: 46.1 years
Male: 21.6 years

Oso Adults

There are 164 adults, (61 of whom are seniors) in Oso.

Sex Ratio

Female: 92 (37.6%)
Male: 153 (62.4%)

Demographics

The racial composition of Oso includes 76.73% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White18876.73%
Two or more races5723.27%
Race
Population ↓
Percentage (of total)
Two or more races3915.92%
Race
Population ↓
Percentage (of total)
White18876.73%
Two or more races187.35%

Oso Marital Status

Economics and Income Statistics

Oso 's average per capita income is $0. Household income levels show a median of $140,486. The poverty rate stands at 0%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Households$140,486$125,798
Families$140,486$125,798
Married Families--
Non Families--

$0

Average Income

$140,486

Median Household Income

0%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)