98178 ZIP Code — Seattle, WA
King County, Washington
ZIP code 98178 is located in Seattle, Washington, within King County. It covers approximately 4.90 square miles and serves a population of 26,760 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 425/206/253.
About ZIP code 98178
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1950s, giving the area an established character. Median home value is $591,000. Owner-occupancy sits near the national average at 67%.
The gap between median ($96,875) and mean household income suggests income inequality — a small number of higher earners pull the average up.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 33 minutes is near the national average.
Educational attainment is near the national average, with 35% of residents holding a bachelor's degree or higher.
26,760
population
4.90
sq mi land
Standard
ZIP type
Pacific (PT)
timezone
98178 ZIP code map
Cities in ZIP code 98178
Below are the cities the US Postal Service accepts for ZIP code 98178. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Seattle | Acceptable |
| Seattle | Preferred |
Nearby ZIP codes
98168 Seattle (1.9 mi)
98057 Renton (2.3 mi)
98056 Renton (2.8 mi)
98118 Seattle (3.2 mi)
98188 Seattle (3.5 mi)
98158 Seattle (4.1 mi)
98055 Renton (4.1 mi)
98108 Seattle (4.2 mi)
98148 Seattle (4.7 mi)
98040 Mercer Island (4.8 mi)
98146 Seattle (5.2 mi)
98106 Seattle (5.9 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 26,760 |
| Population density | 5,461 / sq mi |
| State FIPS | 53 |
| County FIPS | 033 |
| Geography | |
|---|---|
| Land area | 4.90 sq mi |
| Water area | 1.04 sq mi |
| Latitude | 47.4964 |
| Longitude | -122.2519 |
| Timezone | Pacific (PT) |
| Area code | 425/206/253 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 29.1% | 24.4% | 31.7% |
| $50k – $100k | 27.7% | 25.9% | 30.6% |
| $100k – $200k | 33.9% | 30.8% | 27.1% |
| Over $200k | 9.3% | 18.9% | 10.6% |
Demographics & statistics
26,760
Population
5,461
People per sq mi
39.8
Median age
$96,875
Median household income
$48,601
Per capita income
$591,000
Median home value
$1,702
Median monthly rent
67.3%
Home ownership
10.2%
Poverty rate
6.8%
Unemployment
6,885
Housing units
35.1%
Bachelor's or higher
Age distribution
Male
Female
737
Under 5
721
1,021
5–9
1,000
701
10–14
686
681
15–19
666
506
20–24
495
1,965
25–34
1,923
2,181
35–44
2,135
1,714
45–54
1,678
935
55–59
915
853
60–64
835
1,508
65–74
1,475
402
75–84
394
320
85+
313
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 5,632 | 21.0% |
| 18 and over | 21,128 | 79.0% |
| 65 and over | 4,412 | 16.5% |
| Median age | 39.8 years | |
Race & ethnicity
White
29.4%
Asian
27.4%
Black or African American
24.4%
Two or more races
8.6%
Hispanic or Latino
5.6%
Other race
3.5%
American Indian / Alaska Native
1%
Native Hawaiian / Pacific Islander
0.1%
| Group | Count | % |
|---|---|---|
| White | 8,330 | 29.4% |
| Asian | 7,779 | 27.4% |
| Black or African American | 6,913 | 24.4% |
| Two or more races | 2,433 | 8.6% |
| Hispanic or Latino | 1,583 | 5.6% |
| Other race | 988 | 3.5% |
| American Indian / Alaska Native | 280 | 1% |
| Native Hawaiian / Pacific Islander | 37 | 0.1% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 29.1% | 24.4% | 31.7% |
| $50k – $100k | 27.7% | 25.9% | 30.6% |
| $100k – $200k | 33.9% | 30.8% | 27.1% |
| Over $200k | 9.3% | 18.9% | 10.6% |
Under $10k
2.8%
$10k–$15k
2.5%
$15k–$25k
6.4%
$25k–$35k
5.9%
$35k–$50k
6.5%
$50k–$75k
14.9%
$75k–$100k
11.9%
$100k–$150k
18.1%
$150k–$200k
13.1%
$200k+
18.1%
| Range | % of households |
|---|---|
| Under $10k | 2.8% |
| $10k–$15k | 2.5% |
| $15k–$25k | 6.4% |
| $25k–$35k | 5.9% |
| $35k–$50k | 6.5% |
| $50k–$75k | 14.9% |
| $75k–$100k | 11.9% |
| $100k–$150k | 18.1% |
| $150k–$200k | 13.1% |
| $200k+ | 18.1% |
| Median income | $96,875 |
Housing
Home values
Under $50k
1.9%
$50k–$100k
1.0%
$150k–$200k
1.6%
$200k–$300k
6.8%
$300k–$500k
23.8%
$500k–$1M
56.3%
$1M+
8.6%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $591,000 |
| Median rent / month | $1,702 |
| Owner occupied | 67.3% |
| Renter occupied | 32.7% |
| Vacant | 4.7% |
| Single-family detached | 73.8% |
| Large apartment buildings | 8.3% |
| Mobile homes | 0.9% |
| Median rooms | 5.9 |
| Avg household size (owned) | 2.84 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 6.3% |
| 2000–2009 | 10.7% |
| 1990–1999 | 8.7% |
| 1980–1989 | 9.1% |
| 1970–1979 | 5.6% |
| 1960–1969 | 10.8% |
| 1950–1959 | 19.6% |
| 1940–1949 | 20.6% |
| 1939 or earlier | 8.6% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 2.9% |
| 1 bedroom | 10.1% |
| 2 bedrooms | 22.1% |
| 3 bedrooms | 30.9% |
| 4 bedrooms | 28.1% |
| 5+ bedrooms | 5.8% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 9.1% |
| 1 vehicle | 29.3% |
| 2 vehicles | 34.9% |
| 3 or more | 26.6% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 37.3% |
| Electricity | 50.7% |
| Propane / LP gas | 1.2% |
| Fuel oil | 9.3% |
| Wood | 0.7% |
| No fuel used | 0.6% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 4,555 | 47.8% |
| Cohabiting couple | 465 | 4.9% |
| Male householder, no spouse | 1,903 | 20.0% |
| Female householder, no spouse | 2,600 | 27.3% |
| Households with children under 18 | 3,401 | 35.7% |
| Households with seniors (65+) | 3,218 | 33.8% |
| Average household size | 2.79 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 37.0% | 27.3% |
| Married | 48.7% | 46.8% |
| Separated | 2.0% | 3.1% |
| Widowed | 3.7% | 10.1% |
| Divorced | 8.6% | 12.7% |
Education
Less than 9th grade
6.6%
Some HS, no diploma
7.2%
HS graduate
17.4%
Some college, no degree
22.2%
Associate's degree
11.6%
Bachelor's degree
22.7%
Graduate / professional
12.4%
| Metric | % |
|---|---|
| HS diploma or higher | 86.3% |
| Bachelor's or higher | 35.1% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 389 | 6.4% |
| Kindergarten | 476 | 7.8% |
| Elementary school | 2,445 | 40.0% |
| High school | 1,069 | 17.5% |
| College / grad school | 1,733 | 28.4% |
Employment
Industry of employment
Education & healthcare
24.2%
Professional & management
19.0%
Retail trade
11.2%
Transportation & utilities
8.4%
Manufacturing
8.0%
Arts, food & hospitality
7.3%
Other services
5.7%
Finance & real estate
4.9%
Construction
4.7%
Information
2.7%
Public administration
2.5%
Wholesale trade
1.1%
Agriculture & mining
0.2%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 45.9% |
| Service | 16.9% |
| Sales & office | 17.4% |
| Natural resources & construction | 6.4% |
| Production & transportation | 13.4% |
Employment type
| Type | % |
|---|---|
| Private sector | 79.2% |
| Government | 13.4% |
| Self-employed | 7.1% |
| Unpaid family workers | 0.3% |
Commute
| Method | % |
|---|---|
| Drive alone | 65.7% |
| Carpool | 10.8% |
| Public transit | 9.9% |
| Walk | 0.3% |
| Work from home | 12.9% |
| Other means | 0.4% |
| Avg commute (minutes) | 33.0 |
Poverty
All people
10.2%
Under 18 years
14.1%
18 and over
9.1%
Married-couple families
7.0%
Female-led households
7.2%
Income support
| Source | % of households |
|---|---|
| Social Security | 29.5% |
| Retirement income | 21.8% |
| Supplemental Security | 4.6% |
| Cash public assistance | 4.5% |
| Food stamps / SNAP | 15.3% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 24.1% |
| High blood pressure | 32.8% |
| High cholesterol | 31.2% |
| Diabetes | 10.1% |
| Heart disease | 5.2% |
| Stroke | 3.1% |
| Asthma | 9.9% |
| Arthritis | 21.2% |
| Kidney disease | 2.8% |
| Pulmonary disease | 4.9% |
| Cancer | 5.6% |
| Behavior / access | % |
|---|---|
| Smoking | 13.2% |
| Binge drinking | 14.6% |
| No physical activity | 19.8% |
| Less than 7 hrs sleep | 31.8% |
| Depression | 21.4% |
| Fair or poor health | 14.5% |
| Poor mental health | 13.6% |
| Poor physical health | 9.8% |
| No health insurance | 12.7% |
| Visited doctor (checkup) | 71.1% |
| Visited dentist | 63.3% |
| Cholesterol screening | 88.4% |
| Teeth loss | 11.0% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 918 | 4.4% |
| Disability | % |
|---|---|
| Any disability | 11.3% |
| Under 18 | 3.4% |
| 18–64 years | 9.6% |
| 65 and over | 28.0% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 64.7% |
| Public insurance | 39.4% |
| No insurance | 7.2% |
| Uninsured under 19 | 3.5% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 25,302 | 94.6% |
| Spanish | 4,337 | 17.1% |
| Other Indo-European | 546 | 2.2% |
| Asian & Pacific Islander | 59 | 0.2% |
| Other languages | 3,060 | 12.1% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 18,589 | 69.5% |
| Born in same state | 17,958 | 67.1% |
| Born in different state | 10,997 | 41.1% |
| Foreign born | 631 | 2.4% |
| Naturalized citizen | 8,171 | 30.5% |
| Not a US citizen | 5,323 | 65.1% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| French | 1,627 | 6.1% |
| Italian | 1,618 | 6% |
| Polish | 467 | 1.7% |
| Arab | 435 | 1.6% |
| Dutch | 83 | 0.3% |
| Ancestry | Count | % |
|---|---|---|
| English | 77 | 0.3% |
| Irish | 68 | 0.3% |
| Norwegian | 40 | 0.1% |
| German | 24 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 35.6% |
| Internet access | 94.5% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 98178
What city is ZIP code 98178 in?
ZIP code 98178 is primarily assigned to Seattle, Washington.
What county is ZIP code 98178 in?
ZIP code 98178 falls within King County, Washington.
What is the typical home value in ZIP code 98178?
The median home value in ZIP code 98178 is $591,000.
What is the population of ZIP code 98178?
ZIP code 98178 has an estimated population of 26,760 residents, with a density of 5,460 people per square mile.
What is the median household income in ZIP code 98178?
The median household income in ZIP code 98178 is $96,875, above the national median of ~$75,000.
What timezone is ZIP code 98178 in?
ZIP code 98178 observes the PST timezone.