ZIP Code Tabulation Area · Washington

ZIP Code 98121: Seattle, WA

ZIP Code 98121 (Seattle, King County, Washington) has an estimated 21,166 residents in 14,288 households. The median household income is $152,019, the median home value is $848,400 and the median gross rent is $2,337/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Total population

21,166

Margin of error ±1,440

Median household income

$152,019

Margin of error ±$14,126

Median home value

$848,400

Margin of error ±$61,820

Median gross rent

$2,337/mo

Margin of error ±$96

Median age

33.2 yrs

Margin of error ±1.1 yrs

Mean travel time to work

20.3 min

Margin of error ±3.4 min

How ZIP 98121 compares with Washington and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 9812133.2 yrsWashington38.3 yrsUnited States38.9 yrs

Median household income

ZIP 98121$152,019Washington$98,141United States$80,734

Per capita income

ZIP 98121$125,577Washington$53,744United States$44,673

Poverty rate

ZIP 981218.7%Washington9.9%United States12.5%

Unemployment rate

ZIP 981214.1%Washington5.1%United States5.2%

Bachelor's degree or higher

ZIP 9812178.9%Washington39.6%United States35.7%

Median home value

ZIP 98121$848,400Washington$564,600United States$332,700

Median gross rent

ZIP 98121$2,337/moWashington$1,760/moUnited States$1,413/mo

Owner-occupied homes

ZIP 9812122.6%Washington63.8%United States65.2%

Mean travel time to work

ZIP 9812120.3 minWashington26.6 minUnited States26.4 min

Worked from home

ZIP 9812145.3%Washington19.8%United States15.1%

All figures for ZIP 98121

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 98121 — ACS 2020–2024 5-year estimates
MeasureZIP 98121Margin of errorWashingtonUnited States
Total population21,166±1,4407,816,116334,922,499
Median age33.2 yrs±1.1 yrs38.3 yrs38.9 yrs
Households14,288±8423,064,820129,227,496
Median household income$152,019±$14,126$98,141$80,734
Per capita income$125,577±$9,315$53,744$44,673
Poverty rate8.7%±1.9 pts9.9%12.5%
Unemployment rate4.1%±1.4 pts5.1%5.2%
Bachelor's degree or higher78.9%±4.1 pts39.6%35.7%
Median home value$848,400±$61,820$564,600$332,700
Median gross rent$2,337/mo±$96$1,760/mo$1,413/mo
Owner-occupied homes22.6%±3.7 pts63.8%65.2%
Mean travel time to work20.3 min±3.4 min26.6 min26.4 min
Worked from home45.3%±3.8 pts19.8%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 98121
GroupZIP 98121WashingtonUnited States
White alone, not Hispanic or Latino45.0%63.1%57.4%
Black or African American alone, not Hispanic or Latino4.0%3.8%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.0%0.8%0.5%
Asian alone, not Hispanic or Latino36.6%9.7%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.1%0.7%0.2%
Some other race alone, not Hispanic or Latino1.8%0.6%0.6%
Two or more races, not Hispanic or Latino6.0%6.8%4.3%
Hispanic or Latino (of any race)6.6%14.4%19.3%

Where ZIP 98121 is

State
Washington
Main county
King County
Largest overlapping place
Seattle (100% of the ZIP's land area)
Land area
0.44 sq mi· about 48,105 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in King County

98101 Seattle, WA98102 Seattle, WA98103 Seattle, WA98104 Seattle, WA98105 Seattle, WA98106 Seattle, WA98107 Seattle, WA98108 Seattle, WA98109 Seattle, WA98112 Seattle, WA98115 Seattle, WA98116 Seattle, WA98117 Seattle, WA98118 Seattle, WA98119 Seattle, WA98122 Seattle, WA98125 Seattle, WA98126 Seattle, WA98133 Shoreline, WA98134 Seattle, WA98136 Seattle, WA98144 Seattle, WA98146 Burien, WA98148 Burien, WA

See every ZIP code in Washington, or compare ZIP 98121 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.