PlainZIP

Maple Valley, WA · standard

ZIP Code 98038

King County, Washington - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

31,171
181/sq mi
$152,261
Median income
$776,900
Median home value
49.0%
Bachelor's or higher

The verdict

Maple Valley pairs a top-decile household income with top-decile home values, in a rural, homeowner-dominated area.

Top 4%
household income, US ZIPs
Top 5%
home value, US ZIPs
181
people per sq mi
86%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 98038 against every reporting US ZIP.

ZIP code 98038 is a densely settled ZIP (a standard USPS delivery area) in Maple Valley, King County, Washington, with 31,171 residents across 172.2 square miles, a density of 181 people per square mile, in the Los Angeles time zone.

ZIP 98038 skews affluent, with a median household income of $152,261 (67% above the Washington average), while per-capita income is $57,730. The poverty rate stands at 5.2% and the unemployment rate at 4.1%. Median home value sits at $776,900 (52% above the state average), median rent at $2,316 a month, and owner-occupancy at 85.6%.

A solid share of residents have a four-year degree: 49.0% of adults hold a bachelor's degree or higher, the median age is 38.5, and the average commute is 37 minutes. Beyond these figures, 5 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing King County, letting you compare 98038 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 98038

Top 5 sectors by establishment count in Maple Valley, WA

Which industries have the most business establishments in ZIP 98038.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 98038, Maple Valley, WA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

31,171

Population

172.2

Area (sq mi)

181

People / sq mi

Los Angeles

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 98038?

38.5

Median Age

51.3%

Male

48.7%

Female

14.3%

Foreign-Born

White 71.5%
African American 1.3%
Asian 12.9%
American Indian or Alaska Native 0.3%
Native Hawaiian or Pacific Islander 0.3%
Two or More Ethnicities 12.0%
Hispanic or Latino 6.7%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$152,261

Median Household Income

+67% vs state

$57,730

Per Capita Income

5.2%

Poverty Rate

4.1%

Unemployment Rate

36.5 min

Mean Commute Time

How ZIP 98038 ranks nationally

Maple Valley, WA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$152,261 Top 4% higher than 96% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). This entry sits in this band. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 66.9%
Bachelor's Degree or Higher 49.0%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

12,936

Total Housing Units

12,618

Occupied Units

318

Vacant Units

2.95

Avg Household Size

Occupancy Type

Owner 85.6%
Renter 14.4%

$776,900

Median Home Value

+52% vs state

$2,316

Median Rent

1998

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+10.3%

YoY Change (2024)

337

HPI Index (2000 = 100)

+237%

Total Change Since 2000

Home values in ZIP 98038 have increased 10.3% over the past year (2024). Since 2000, this ZIP has seen +237% cumulative appreciation.

Year Annual Change HPI Index
2020 +5.6% 223
2021 +14.7% 256
2022 +21.6% 312
2023 -2.1% 305
2024 +10.3% 337

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 752 business establishments in ZIP 98038, employing approximately 6,029 people with a combined annual payroll of $314,712,000.

752

Businesses

6,029

Employees

$314.7M

Annual Payroll

16

Industry Sectors

Industry Establishments % of Total
Construction 153 20.4%
Health care and social assistance 89 11.8%
Professional, scientific, and technical services 82 10.9%
Other services (except public administration) 71 9.4%
Accommodation and food services 60 8.0%
Retail trade 57 7.6%
Administrative and support and waste management and remediation services 52 6.9%
Real estate and rental and leasing 36 4.8%
Finance and insurance 35 4.7%
Transportation and warehousing 27 3.6%
Wholesale trade 23 3.1%
Educational services 21 2.8%
Manufacturing 16 2.1%
Arts, entertainment, and recreation 15 2.0%
Information 9 1.2%
Mining, quarrying, and oil and gas extraction 3 0.4%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 98038 vs 98027 →

ZIP 98038 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 98038 ranks the most populous - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 98038 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 98038 ranks #3 of 5 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
98027 Issaquah, WA 26,141 6.2 mi
98050 Preston, WA 322 8.8 mi
98051 Ravensdale, WA 3,270 6.1 mi
98010 Black Diamond, WA 5,025 7.5 mi
98029 Issaquah, WA 24,348 10.0 mi

More ZIP Codes in King County

98052 standard
Redmond, WA
Pop: 58,442
98023 standard
Federal Way, WA
Pop: 47,510
98115 standard
Seattle, WA
Pop: 46,206
98103 standard
Seattle, WA
Pop: 45,911
98133 standard
Seattle, WA
Pop: 44,555
98003 standard
Federal Way, WA
Pop: 44,151

Related Areas

King County Maple Valley, WA Washington

Frequently Asked Questions

What county is ZIP code 98038 in? ▼
ZIP code 98038 (Maple Valley) is located in King County, Washington. King County contains multiple ZIP codes, see the full list at /counties/king-wa.
What is the population of ZIP code 98038? ▼
ZIP code 98038 in Maple Valley, WA has a population of 31,171 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 98038? ▼
The median household income in ZIP 98038 is $152,261, which is 100% above the national average of $76,288.
What is the average home value in ZIP 98038? ▼
The median home value in ZIP 98038 is $776,900, which is 179% above the national average of $278,155.
What is the demographic makeup of ZIP 98038? ▼
The largest racial group in ZIP 98038 is White at 71.5%. Hispanic or Latino residents make up 6.7% of the population.
How many businesses are in ZIP code 98038? ▼
ZIP code 98038 has 752 business establishments employing approximately 6,029 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 98038? ▼
The top industries by establishment count in ZIP 98038 are: Construction (153), Health care and social assistance (89), Professional, scientific, and technical services (82). There are 16 industry sectors represented in total.
How have home values changed in ZIP code 98038? ▼
According to the FHFA House Price Index, home values in ZIP 98038 increased by 10.3% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 237%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 98038? ▼
In ZIP code 98038, 66.9% of residents aged 25+ have a high school diploma or higher, and 49.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 98038? ▼
The mean commute time for workers in ZIP code 98038 is 36.5 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 98038? ▼
In ZIP code 98038, approximately 85.6% of occupied housing units are owner-occupied and 14.4% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 98038? ▼
The poverty rate in ZIP code 98038 is 5.2% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.