Unified School District · WA
Highline School District
Highline School District is a unified school district in Washington with a community population of 136,437. The median household income is $89,005 and the median age is 38.8.
136,437
Population
4415
People / sq mi
$89,005
Median Income
38.8
Median Age
Highline School District covers 31 sq mi of land at 4414.7 people per square mile.
Race & Ethnicity
| White | 43.8% |
| Black or African American | 0.0% |
| Asian | 31.5% |
| Hispanic or Latino (any race) | 0.0% |
Economy & Income
$89,005
Median Household Income
$45,907
Per Capita Income
8.2%
Poverty Rate
4.4%
Unemployment
Housing
$619,300
Median Home Value
$1,743
Median Rent
55.2%
Homeownership
Education Attainment
86.5%
High School+
32.8%
Bachelor's+
Other Washington School Districts
Largest Cities in Washington
Largest Counties in Washington
Congressional Districts in Washington
State rankings
Frequently Asked Questions
Highline School District serves a community with a population of 136,437 according to the latest Census ACS 5-Year estimates. This unified school district is located in Washington.
The median household income in Highline School District is $89,005, with a per capita income of $45,907. The poverty rate is 8.2%.
Highline School District is 43.8% White, 0.0% Black or African American, 31.5% Asian, and 0.0% Hispanic or Latino, per Census ACS data.
In Highline School District, 86.5% of adults have a high school diploma or higher, and 32.8% hold a bachelor's degree or higher, per Census ACS estimates.
The median home value in Highline School District is $619,300, with a median rent of $1,743. The homeownership rate is 55.2%.
More from Washington
Data for Highline School District from the American Community Survey 5-Year estimates. Land area from Census Gazetteer files. This is a unified school district (GEOID: 5303540).
Highline School District stands apart on settlement density — it is among the most densely settled of US school districts, at roughly 4,415 people per square mile. With 136,437 residents, Highline School District is a school district in Washington.
Households take in a median $89,005, comfortably above the US median of $78,538. The poverty rate is 8.2%, below the national 12.4%. Housing is expensive: the median home is worth $619,300, with typical rent around $1,743.
Educational attainment is on the higher side for US school districts — 32.8% of adults hold a four-year degree, below the national 35.0%.
That density explains much of the rest of the profile in Highline School District: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Source: U.S. Census Bureau ACS, 2026.