98121 ZIP Code — Seattle, WA

King County, Washington

ZIP code 98121 is located in Seattle, Washington, within King County. It covers approximately 0.44 square miles and serves a population of 20,562 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 206/360/425/564.

About ZIP code 98121

The housing stock consists of a significant share of large multi-unit buildings. Much of the housing stock is relatively new, reflecting recent development activity. Median home value is $799,600. Renters make up the majority at 74%, typical of denser urban areas.

Median household income is $142,926.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. The average commute of 23 minutes is near the national average. Remote work is prevalent — 36% of workers work from home.

Educational attainment is high — 79% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 98121 reflects a community defined by a highly educated population and a high rate of remote workers.

20,562

population

0.44

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

98121 ZIP code map

Cities in ZIP code 98121

Below are the cities the US Postal Service accepts for ZIP code 98121. Using any city not on this list may result in mail delivery delays.

City	Status
Seattle	Preferred

Nearby ZIP codes

98101 Seattle (0.7 mi) 98154 Seattle (0.8 mi) 98174 Seattle (0.8 mi) 98164 Seattle (0.9 mi) 98190 Seattle (0.9 mi) 98185 Seattle (0.9 mi) 98181 Seattle (0.9 mi) 98129 Seattle (0.9 mi) 98191 Seattle (0.9 mi) 98170 Seattle (0.9 mi) 98161 Seattle (1.1 mi) 98104 Seattle (1.2 mi)

Demographics updated 05/2026

Population
Total population	20,562
Population density	46,732 / sq mi
State FIPS	53
County FIPS	033

Geography
Land area	0.44 sq mi
Water area	0.20 sq mi
Latitude	47.6135
Longitude	-122.3474
Timezone	Pacific (PT)
Area code	206/360/425/564

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	28.4%	24.4%	31.7%
$50k – $100k	14.1%	25.9%	30.6%
$100k – $200k	32.8%	30.8%	27.1%
Over $200k	24.7%	18.9%	10.6%

Demographics & statistics

20,562

Population

46,732

People per sq mi

33.6

Median age

$142,926

Median household income

$110,372

Per capita income

$799,600

Median home value

$2,280

Median monthly rent

25.8%

Home ownership

8.1%

Poverty rate

3.4%

Unemployment

5,350

Housing units

78.7%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

118

15–19

554

20–24

413

5,629

25–34

4,200

1,664

35–44

1,241

1,145

45–54

854

488

55–59

365

681

60–64

509

1,019

65–74

761

255

75–84

191

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	288	1.4%
18 and over	20,274	98.6%
65 and over	2,344	11.4%
Median age	33.6 years

Race & ethnicity

White 46.7%

Asian 31.3%

Two or more races 8.5%

Hispanic or Latino 6.8%

Black or African American 4.3%

Other race 2.3%

Group	Count	%
White	10,314	46.7%
Asian	6,914	31.3%
Two or more races	1,869	8.5%
Hispanic or Latino	1,505	6.8%
Black or African American	959	4.3%
Other race	506	2.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	28.4%	24.4%	31.7%
$50k – $100k	14.1%	25.9%	30.6%
$100k – $200k	32.8%	30.8%	27.1%
Over $200k	24.7%	18.9%	10.6%

Under $10k 4.1%

$10k–$15k 4.2%

$15k–$25k 7.3%

$25k–$35k 5.8%

$35k–$50k 3.5%

$50k–$75k 7.0%

$75k–$100k 7.0%

$100k–$150k 14.0%

$150k–$200k 12.2%

$200k+ 35.0%

Range	% of households
Under $10k	4.1%
$10k–$15k	4.2%
$15k–$25k	7.3%
$25k–$35k	5.8%
$35k–$50k	3.5%
$50k–$75k	7.0%
$75k–$100k	7.0%
$100k–$150k	14.0%
$150k–$200k	12.2%
$200k+	35.0%
Median income	$142,926

Housing

Home values

$100k–$150k 0.7%

$200k–$300k 1.4%

$300k–$500k 7.8%

$500k–$1M 61.0%

$1M+ 29.1%

Housing overview

Metric	Value
Median home value	$799,600
Median rent / month	$2,280
Owner occupied	25.8%
Renter occupied	74.2%
Vacant	11.7%
Single-family detached	1.6%
Large apartment buildings	95.6%
Mobile homes	0.0%
Median rooms	2.3
Avg household size (owned)	1.65

Year built

Era	%
2020 or later	0.0%
2010–2019	33.3%
2000–2009	24.8%
1990–1999	12.4%
1980–1989	9.9%
1970–1979	7.1%
1960–1969	1.4%
1950–1959	1.1%
1940–1949	0.8%
1939 or earlier	9.2%

Bedrooms

Size	% of units
No bedroom (studio)	32.7%
1 bedroom	39.6%
2 bedrooms	24.8%
3 bedrooms	1.5%
4 bedrooms	0.7%
5+ bedrooms	0.7%

Vehicles per household

Vehicles	% of households
No vehicle	42.5%
1 vehicle	48.8%
2 vehicles	8.0%
3 or more	0.7%

Heating fuel

Fuel type	%
Utility gas	18.7%
Electricity	77.4%
Propane / LP gas	0.1%
Fuel oil	0.1%
No fuel used	3.2%

Households & families

Household type	Count	%
Married-couple family	3,730	27.2%
Cohabiting couple	1,231	9.0%
Male householder, no spouse	5,856	42.8%
Female householder, no spouse	2,872	21.0%
Households with children under 18	240	1.8%
Households with seniors (65+)	1,707	12.5%
Average household size	1.48

Marital status

Status	Male	Female
Never married	50.6%	44.0%
Married	37.6%	46.0%
Separated	1.1%	0.4%
Widowed	2.4%	1.7%
Divorced	8.4%	7.9%

Education

Less than 9th grade 1.6%

Some HS, no diploma 1.1%

HS graduate 6.4%

Some college, no degree 8.9%

Associate's degree 3.3%

Bachelor's degree 39.1%

Graduate / professional 39.6%

Metric	%
HS diploma or higher	97.3%
Bachelor's or higher	78.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	19	1.1%
Kindergarten	43	2.5%
Elementary school	60	3.5%
High school	64	3.7%
College / grad school	1,523	89.1%

Employment

Industry of employment

Professional & management 32.3%

Retail trade 21.1%

Education & healthcare 11.3%

Information 7.7%

Finance & real estate 6.8%

Arts, food & hospitality 5.7%

Manufacturing 5.2%

Construction 3.2%

Transportation & utilities 3.0%

Other services 1.5%

Wholesale trade 1.2%

Public administration 0.7%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	79.4%
Service	6.0%
Sales & office	10.9%
Natural resources & construction	0.7%
Production & transportation	3.0%

Employment type

Type	%
Private sector	91.9%
Government	3.8%
Self-employed	4.1%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	18.0%
Carpool	2.3%
Public transit	8.0%
Walk	33.4%
Work from home	35.6%
Other means	2.7%
Avg commute (minutes)	22.8

Poverty

All people 8.1%

Under 18 years 0.0%

18 and over 8.2%

Married-couple families 2.6%

Female-led households 0.0%

Income support

Source	% of households
Social Security	13.5%
Retirement income	9.9%
Supplemental Security	1.9%
Cash public assistance	2.7%
Food stamps / SNAP	7.5%

Health indicators

Condition	%
Obesity	19.6%
High blood pressure	20.4%
High cholesterol	23.6%
Diabetes	4.7%
Heart disease	2.8%
Stroke	1.4%
Asthma	8.7%
Arthritis	13.1%
Kidney disease	1.6%
Pulmonary disease	2.4%
Cancer	4.2%

Behavior / access	%
Smoking	7.6%
Binge drinking	21.7%
No physical activity	9.9%
Less than 7 hrs sleep	25.6%
Depression	22.6%
Fair or poor health	6.7%
Poor mental health	12.3%
Poor physical health	5.6%
No health insurance	7.4%
Visited doctor (checkup)	64.9%
Visited dentist	75.6%
Cholesterol screening	87.5%
Teeth loss	4.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	613	3.0%

Disability	%
Any disability	9.6%
Under 18	0.0%
18–64 years	8.5%
65 and over	19.2%

Health insurance coverage

Type	%
Private insurance	81.6%
Public insurance	21.0%
No insurance	4.6%
Uninsured under 19	7.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	20,417	99.3%
Spanish	1,722	8.4%
Other Indo-European	29	0.1%
Asian & Pacific Islander	606	3.0%
Other languages	1,087	5.3%

Place of birth & citizenship

Origin	Count	%
Native born (US)	12,244	59.5%
Born in same state	11,990	58.3%
Born in different state	3,028	14.7%
Foreign born	254	1.2%
Naturalized citizen	8,318	40.5%
Not a US citizen	1,709	20.5%

Ancestry

Ancestry	Count	%
French	2,068	10.1%
Italian	1,828	8.9%
Polish	664	3.2%
Arab	232	1.1%
Dutch	196	1%

Ancestry	Count	%
Irish	162	0.8%
Norwegian	149	0.7%
English	108	0.5%
German	95	0.5%

Technology access

Metric	% of households
Computer access	66.6%
Internet access	97.3%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 98121

What city is ZIP code 98121 in?

ZIP code 98121 is primarily assigned to Seattle, Washington.

What county is ZIP code 98121 in?

ZIP code 98121 falls within King County, Washington.

How educated is the population of ZIP code 98121?

79% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 98121 mostly rentals?

74% of occupied units in ZIP code 98121 are renter-occupied.

What is the median household income in ZIP code 98121?

The median household income in ZIP code 98121 is $142,926, above the national median of ~$75,000.

What is the typical home value in ZIP code 98121?

The median home value in ZIP code 98121 is $799,600.

What timezone is ZIP code 98121 in?

ZIP code 98121 observes the PST timezone.