98166 ZIP Code — Seattle, WA

King County, Washington

ZIP code 98166 is located in Seattle, Washington, within King County. It covers approximately 5.78 square miles and serves a population of 22,418 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 206/253.

About ZIP code 98166

The housing stock consists of a mix of housing types. Most homes were built in the 1950s, giving the area an established character. Median home value is $732,600. Owner-occupancy sits near the national average at 65%.

The gap between median ($105,013) and mean household income suggests income inequality — a small number of higher earners pull the average up. 34% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 28 minutes is near the national average. Remote work is prevalent — 20% of workers work from home.

Educational attainment is near the national average, with 44% of residents holding a bachelor's degree or higher.

Overall, ZIP code 98166 reflects a community defined by a high rate of remote workers and a significant Social Security-dependent population.

22,418

population

5.78

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

98166 ZIP code map

Cities in ZIP code 98166

Below are the cities the US Postal Service accepts for ZIP code 98166. Using any city not on this list may result in mail delivery delays.

City	Status
Seattle	Acceptable
Seattle	Preferred

Nearby ZIP codes

98148 Seattle (1.7 mi) 98158 Seattle (2.5 mi) 98146 Seattle (3.6 mi) 98188 Seattle (3.8 mi) 98168 Seattle (4.3 mi) 98070 Vashon (4.7 mi) 98198 Seattle (5.1 mi) 98032 Kent (5.8 mi) 98178 Seattle (6 mi) 98136 Seattle (6.3 mi) 98057 Renton (6.8 mi) 98108 Seattle (6.8 mi)

Demographics updated 05/2026

Population
Total population	22,418
Population density	3,879 / sq mi
State FIPS	53
County FIPS	033

Geography
Land area	5.78 sq mi
Water area	1.63 sq mi
Latitude	47.4480
Longitude	-122.3584
Timezone	Pacific (PT)
Area code	206/253

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	26.9%	24.4%	31.7%
$50k – $100k	27.7%	25.9%	30.6%
$100k – $200k	28.7%	30.8%	27.1%
Over $200k	16.7%	18.9%	10.6%

Demographics & statistics

22,418

Population

3,879

People per sq mi

43.1

Median age

$105,013

Median household income

$60,283

Per capita income

$732,600

Median home value

$1,644

Median monthly rent

65.3%

Home ownership

8.8%

Poverty rate

4.9%

Unemployment

6,656

Housing units

43.8%

Bachelor's or higher

Age distribution

Male Female

622

Under 5

593

688

5–9

655

588

10–14

560

504

15–19

480

428

20–24

408

1,355

25–34

1,291

1,936

35–44

1,846

1,352

45–54

1,288

1,022

55–59

974

754

60–64

718

1,337

65–74

1,275

537

75–84

512

356

85+

339

← Male

Female →

Age summary

Group	Count	%
Under 18	4,266	19.0%
18 and over	18,152	81.0%
65 and over	4,356	19.4%
Median age	43.1 years

Race & ethnicity

White 66.3%

Hispanic or Latino 9.2%

Two or more races 8.9%

Asian 6.2%

Other race 6.2%

Black or African American 2.3%

American Indian / Alaska Native 0.6%

Native Hawaiian / Pacific Islander 0.2%

Group	Count	%
White	16,383	66.3%
Hispanic or Latino	2,281	9.2%
Two or more races	2,209	8.9%
Asian	1,541	6.2%
Other race	1,532	6.2%
Black or African American	558	2.3%
American Indian / Alaska Native	147	0.6%
Native Hawaiian / Pacific Islander	48	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	26.9%	24.4%	31.7%
$50k – $100k	27.7%	25.9%	30.6%
$100k – $200k	28.7%	30.8%	27.1%
Over $200k	16.7%	18.9%	10.6%

Under $10k 2.2%

$10k–$15k 3.2%

$15k–$25k 4.9%

$25k–$35k 5.7%

$35k–$50k 5.6%

$50k–$75k 15.2%

$75k–$100k 9.8%

$100k–$150k 16.5%

$150k–$200k 15.7%

$200k+ 21.1%

Range	% of households
Under $10k	2.2%
$10k–$15k	3.2%
$15k–$25k	4.9%
$25k–$35k	5.7%
$35k–$50k	5.6%
$50k–$75k	15.2%
$75k–$100k	9.8%
$100k–$150k	16.5%
$150k–$200k	15.7%
$200k+	21.1%
Median income	$105,013

Housing

Home values

Under $50k 0.4%

$50k–$100k 0.3%

$100k–$150k 0.6%

$200k–$300k 2.0%

$300k–$500k 11.4%

$500k–$1M 66.6%

$1M+ 18.7%

Housing overview

Metric	Value
Median home value	$732,600
Median rent / month	$1,644
Owner occupied	65.3%
Renter occupied	34.7%
Vacant	6.7%
Single-family detached	67.2%
Large apartment buildings	14.0%
Mobile homes	0.1%
Median rooms	5.8
Avg household size (owned)	2.57

Year built

Era	%
2020 or later	0.0%
2010–2019	4.9%
2000–2009	8.3%
1990–1999	5.4%
1980–1989	5.2%
1970–1979	13.0%
1960–1969	15.8%
1950–1959	25.1%
1940–1949	14.5%
1939 or earlier	7.8%

Bedrooms

Size	% of units
No bedroom (studio)	7.6%
1 bedroom	11.5%
2 bedrooms	22.4%
3 bedrooms	30.3%
4 bedrooms	20.8%
5+ bedrooms	7.4%

Vehicles per household

Vehicles	% of households
No vehicle	6.9%
1 vehicle	32.3%
2 vehicles	34.2%
3 or more	26.6%

Heating fuel

Fuel type	%
Utility gas	45.7%
Electricity	42.3%
Propane / LP gas	1.1%
Fuel oil	9.5%
Wood	0.3%
Solar	0.3%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	4,659	50.7%
Cohabiting couple	768	8.4%
Male householder, no spouse	1,588	17.3%
Female householder, no spouse	2,166	23.6%
Households with children under 18	2,475	27.0%
Households with seniors (65+)	3,164	34.5%
Average household size	2.43

Marital status

Status	Male	Female
Never married	29.4%	26.2%
Married	55.0%	53.3%
Separated	1.6%	1.2%
Widowed	1.7%	7.3%
Divorced	12.3%	12.0%

Education

Less than 9th grade 3.3%

Some HS, no diploma 3.1%

HS graduate 17.5%

Some college, no degree 21.1%

Associate's degree 11.1%

Bachelor's degree 29.6%

Graduate / professional 14.2%

Metric	%
HS diploma or higher	93.6%
Bachelor's or higher	43.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	182	4.4%
Kindergarten	119	2.9%
Elementary school	2,088	50.2%
High school	868	20.9%
College / grad school	899	21.6%

Employment

Industry of employment

Education & healthcare 21.1%

Professional & management 13.7%

Manufacturing 10.5%

Transportation & utilities 9.1%

Arts, food & hospitality 8.8%

Retail trade 8.7%

Construction 6.6%

Finance & real estate 6.5%

Other services 5.0%

Wholesale trade 4.2%

Public administration 4.0%

Information 1.9%

Agriculture & mining 0.1%

Occupation

Category	%
Management, business & arts	47.4%
Service	13.5%
Sales & office	21.2%
Natural resources & construction	7.3%
Production & transportation	10.6%

Employment type

Type	%
Private sector	79.8%
Government	14.9%
Self-employed	5.1%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	60.2%
Carpool	9.5%
Public transit	6.4%
Walk	2.5%
Work from home	20.1%
Other means	1.3%
Avg commute (minutes)	27.8

Poverty

All people 8.8%

Under 18 years 12.6%

18 and over 7.9%

Married-couple families 2.6%

Female-led households 20.4%

Income support

Source	% of households
Social Security	33.5%
Retirement income	24.1%
Supplemental Security	4.9%
Cash public assistance	2.0%
Food stamps / SNAP	8.5%

Health indicators

Condition	%
Obesity	23.4%
High blood pressure	30.5%
High cholesterol	33.1%
Diabetes	8.1%
Heart disease	5.7%
Stroke	2.8%
Asthma	9.7%
Arthritis	23.2%
Kidney disease	2.8%
Pulmonary disease	5.2%
Cancer	7.3%

Behavior / access	%
Smoking	11.7%
Binge drinking	17.6%
No physical activity	15.8%
Less than 7 hrs sleep	26.9%
Depression	24.5%
Fair or poor health	12.2%
Poor mental health	13.3%
Poor physical health	9.5%
No health insurance	11.7%
Visited doctor (checkup)	70.0%
Visited dentist	70.6%
Cholesterol screening	90.0%
Teeth loss	8.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,248	6.9%

Disability	%
Any disability	13.9%
Under 18	4.3%
18–64 years	10.1%
65 and over	35.6%

Health insurance coverage

Type	%
Private insurance	75.6%
Public insurance	31.2%
No insurance	6.9%
Uninsured under 19	1.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	21,203	94.6%
Spanish	1,280	6.0%
Other Indo-European	889	4.2%
Asian & Pacific Islander	65	0.3%
Other languages	312	1.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	19,691	87.8%
Born in same state	19,301	86.1%
Born in different state	12,277	54.8%
Foreign born	390	1.7%
Naturalized citizen	2,727	12.2%
Not a US citizen	1,399	51.3%

Ancestry

Ancestry	Count	%
French	3,639	16.2%
Italian	3,616	16.1%
Polish	1,264	5.6%
English	531	2.4%
Arab	491	2.2%

Ancestry	Count	%
Dutch	233	1%
German	123	0.5%
Norwegian	69	0.3%
Irish	35	0.2%

Technology access

Metric	% of households
Computer access	41.0%
Internet access	97.4%

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

Frequently asked questions about ZIP code 98166

What city is ZIP code 98166 in?

ZIP code 98166 is primarily assigned to Seattle, Washington.

What county is ZIP code 98166 in?

ZIP code 98166 falls within King County, Washington.

What is the typical home value in ZIP code 98166?

The median home value in ZIP code 98166 is $732,600.

What is the median household income in ZIP code 98166?

The median household income in ZIP code 98166 is $105,013, above the national median of ~$75,000.

What is the population of ZIP code 98166?

ZIP code 98166 has an estimated population of 22,418 residents, with a density of 3,881 people per square mile.

What timezone is ZIP code 98166 in?

ZIP code 98166 observes the PST timezone.