98388 ZIP Code — Steilacoom, WA

Pierce County, Washington

ZIP code 98388 is located in Steilacoom, Washington, within Pierce County. It covers approximately 8.84 square miles and serves a population of 7,051 residents. This is a po box ZIP code in the Pacific (PT) timezone, served by area code 253.

About ZIP code 98388

The housing stock consists of a mix of housing types. Most homes were built in the 1970s, giving the area an established character. Median home value is $550,800. Owner-occupancy sits near the national average at 65%.

Median household income is $94,708. 32% 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 31 minutes is near the national average. Remote work is prevalent — 21% of workers work from home.

Educational attainment is near the national average, with 43% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 19% of civilians, above the national average of 7%.

Overall, ZIP code 98388 reflects a community defined by a strong veteran community, a high rate of remote workers, and a significant Social Security-dependent population.

7,051

population

8.84

sq mi land

PO Box

ZIP type

Pacific (PT)

timezone

98388 ZIP code map

Cities in ZIP code 98388

Below are the cities the US Postal Service accepts for ZIP code 98388. Using any city not on this list may result in mail delivery delays.

City	Status
Steilacoom	Acceptable
Steilacoom	Acceptable

Demographics updated 06/2026

Population
Total population	7,051
Population density	798 / sq mi
State FIPS	53
County FIPS	053

Geography
Land area	8.84 sq mi
Water area	12.84 sq mi
Latitude	47.1669
Longitude	-122.6075
Timezone	Pacific (PT)
Area code	253

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	26.5%	31.0%	31.7%
$50k – $100k	28.9%	33.3%	30.6%
$100k – $200k	37.0%	28.4%	27.1%
Over $200k	7.6%	7.3%	10.6%

Demographics & statistics

7,051

Population

798

People per sq mi

38.8

Median age

$94,708

Median household income

$46,596

Per capita income

$550,800

Median home value

$1,592

Median monthly rent

65.2%

Home ownership

12.5%

Poverty rate

3.2%

Unemployment

1,920

Housing units

43.3%

Bachelor's or higher

Age distribution

Male Female

238

Under 5

232

241

5–9

233

118

10–14

115

161

15–19

157

248

20–24

241

467

25–34

453

529

35–44

513

376

45–54

365

202

55–59

196

290

60–64

281

466

65–74

452

150

75–84

145

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,303	18.5%
18 and over	5,748	81.5%
65 and over	1,395	19.8%
Median age	38.8 years

Race & ethnicity

White 68.7%

Two or more races 12.9%

Asian 6.3%

Black or African American 5.6%

Hispanic or Latino 3.4%

Other race 1.6%

American Indian / Alaska Native 1.3%

Native Hawaiian / Pacific Islander 0.3%

Group	Count	%
White	5,013	68.7%
Two or more races	940	12.9%
Asian	460	6.3%
Black or African American	411	5.6%
Hispanic or Latino	251	3.4%
Other race	115	1.6%
American Indian / Alaska Native	92	1.3%
Native Hawaiian / Pacific Islander	20	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	26.5%	31.0%	31.7%
$50k – $100k	28.9%	33.3%	30.6%
$100k – $200k	37.0%	28.4%	27.1%
Over $200k	7.6%	7.3%	10.6%

Under $10k 5.3%

$10k–$15k 0.4%

$15k–$25k 3.1%

$25k–$35k 4.0%

$35k–$50k 9.4%

$50k–$75k 15.0%

$75k–$100k 14.0%

$100k–$150k 20.6%

$150k–$200k 16.2%

$200k+ 12.2%

Range	% of households
Under $10k	5.3%
$10k–$15k	0.4%
$15k–$25k	3.1%
$25k–$35k	4.0%
$35k–$50k	9.4%
$50k–$75k	15.0%
$75k–$100k	14.0%
$100k–$150k	20.6%
$150k–$200k	16.2%
$200k+	12.2%
Median income	$94,708

Housing

Home values

Under $50k 0.8%

$100k–$150k 1.0%

$150k–$200k 0.6%

$200k–$300k 8.9%

$300k–$500k 30.8%

$500k–$1M 52.5%

$1M+ 5.3%

Housing overview

Metric	Value
Median home value	$550,800
Median rent / month	$1,592
Owner occupied	65.2%
Renter occupied	34.8%
Vacant	3.7%
Single-family detached	65.3%
Large apartment buildings	2.5%
Mobile homes	0.7%
Median rooms	6.1
Avg household size (owned)	2.44

Year built

Era	%
2020 or later	0.0%
2010–2019	5.3%
2000–2009	7.6%
1990–1999	11.5%
1980–1989	11.8%
1970–1979	34.3%
1960–1969	10.4%
1950–1959	6.0%
1940–1949	3.8%
1939 or earlier	9.4%

Bedrooms

Size	% of units
No bedroom (studio)	1.4%
1 bedroom	9.7%
2 bedrooms	20.4%
3 bedrooms	38.9%
4 bedrooms	23.0%
5+ bedrooms	6.6%

Vehicles per household

Vehicles	% of households
No vehicle	0.9%
1 vehicle	27.8%
2 vehicles	47.3%
3 or more	23.9%

Heating fuel

Fuel type	%
Utility gas	37.6%
Electricity	59.6%
Propane / LP gas	0.3%
Fuel oil	0.9%
Wood	0.2%
Solar	0.4%
No fuel used	1.1%

Households & families

Household type	Count	%
Married-couple family	1,435	51.7%
Cohabiting couple	227	8.2%
Male householder, no spouse	437	15.7%
Female householder, no spouse	679	24.4%
Households with children under 18	802	28.9%
Households with seniors (65+)	946	34.1%
Average household size	2.40

Marital status

Status	Male	Female
Never married	32.2%	18.6%
Married	51.1%	55.9%
Separated	2.7%	0.9%
Widowed	3.2%	7.8%
Divorced	10.8%	16.8%

Education

Less than 9th grade 1.1%

Some HS, no diploma 4.1%

HS graduate 17.0%

Some college, no degree 21.2%

Associate's degree 13.3%

Bachelor's degree 24.2%

Graduate / professional 19.2%

Metric	%
HS diploma or higher	94.8%
Bachelor's or higher	43.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	78	6.2%
Kindergarten	31	2.5%
Elementary school	531	42.0%
High school	250	19.8%
College / grad school	374	29.6%

Employment

Industry of employment

Education & healthcare 25.1%

Professional & management 13.0%

Retail trade 11.6%

Public administration 10.9%

Arts, food & hospitality 9.1%

Construction 6.9%

Manufacturing 6.3%

Transportation & utilities 6.1%

Finance & real estate 5.0%

Other services 3.0%

Wholesale trade 1.6%

Information 1.5%

Occupation

Category	%
Management, business & arts	45.2%
Service	19.9%
Sales & office	17.2%
Natural resources & construction	5.5%
Production & transportation	12.2%

Employment type

Type	%
Private sector	68.3%
Government	24.8%
Self-employed	6.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	65.9%
Carpool	7.7%
Public transit	4.4%
Walk	0.5%
Work from home	21.2%
Other means	0.3%
Avg commute (minutes)	30.9

Poverty

All people 12.5%

Under 18 years 11.3%

18 and over 12.8%

Married-couple families 1.4%

Female-led households 45.9%

Income support

Source	% of households
Social Security	31.5%
Retirement income	34.2%
Supplemental Security	1.8%
Cash public assistance	2.2%
Food stamps / SNAP	10.4%

Health indicators

Condition	%
Obesity	31.7%
High blood pressure	32.8%
High cholesterol	32.7%
Diabetes	8.2%
Heart disease	4.9%
Stroke	2.4%
Asthma	9.6%
Arthritis	22.0%
Kidney disease	2.4%
Pulmonary disease	4.6%
Cancer	6.4%

Behavior / access	%
Smoking	13.1%
Binge drinking	17.6%
No physical activity	17.3%
Less than 7 hrs sleep	31.3%
Depression	22.7%
Fair or poor health	10.9%
Poor mental health	13.7%
Poor physical health	8.8%
No health insurance	10.1%
Visited doctor (checkup)	68.7%
Visited dentist	68.9%
Cholesterol screening	88.0%
Teeth loss	7.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,070	19.4%

Disability	%
Any disability	14.1%
Under 18	3.5%
18–64 years	10.6%
65 and over	34.1%

Health insurance coverage

Type	%
Private insurance	79.1%
Public insurance	35.3%
No insurance	5.5%
Uninsured under 19	1.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	6,581	93.3%
Spanish	203	3.1%
Other Indo-European	54	0.8%
Asian & Pacific Islander	6	0.1%
Other languages	101	1.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	6,343	90.0%
Born in same state	6,039	85.6%
Born in different state	2,813	39.9%
Foreign born	304	4.3%
Naturalized citizen	708	10.0%
Not a US citizen	443	62.6%

Ancestry

Ancestry	Count	%
French	1,025	14.5%
Italian	712	10.1%
Polish	305	4.3%
Arab	201	2.9%

Ancestry	Count	%
Dutch	64	0.9%
Irish	62	0.9%
English	48	0.7%
German	23	0.3%

Technology access

Metric	% of households
Computer access	39.4%
Internet access	96.1%

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

Frequently asked questions about ZIP code 98388

What city is ZIP code 98388 in?

ZIP code 98388 is primarily assigned to Steilacoom, Washington.

What county is ZIP code 98388 in?

ZIP code 98388 falls within Pierce County, Washington.

Does ZIP code 98388 have a large veteran population?

19% of civilians in ZIP code 98388 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 98388?

The median home value in ZIP code 98388 is $550,800.

What is the population of ZIP code 98388?

ZIP code 98388 has an estimated population of 7,051 residents, with a density of 798 people per square mile.

What is the median household income in ZIP code 98388?

The median household income in ZIP code 98388 is $94,708, above the national median of ~$75,000.

What timezone is ZIP code 98388 in?

ZIP code 98388 observes the PST timezone.