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 High-density area
- $152,261
- Median income Above-median income area
- $776,900
- Median home value Above-median home value
- 49.0%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 98038 (Maple Valley, WA) rose +10.3% from 2023 to 2024. The all-transactions index moved from 305.5 in 2023 to 336.9 in 2024 (2000 = 100).
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 average Washington ZIP), while per-capita income is $57,730. The poverty rate is 5.2%, with unemployment at 4.1%; those measures add context to the income figure. Housing is both higher-cost and owner-heavy: median home value is $776,900 (52% above the average Washington ZIP), while 85.6% of occupied homes are owner-occupied and median rent is $2,316.
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. The page also surfaces 5 ZIP codes within roughly 10 miles and 6 more in King County, so 98038 can be compared with both its immediate and county-level context.
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.
- Construction
Construction
153 establishments
- Health care and social assistance
Health care and social assistance
89 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
82 establishments
- Other services (except public administration)
Other services (except public administration)
71 establishments
- Accommodation and food services 60
Accommodation and food services
60 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, 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
Who lives in ZIP 98038?
38.5
Median Age
51.3%
Male
48.7%
Female
14.3%
Foreign-Born
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 ZIP avg
$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
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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
12,936housing units
12,936
Total Housing Units
12,618
Occupied Units
318
Vacant Units
2.95
Avg Household Size
Occupancy Type
$776,900
Median Home Value
+52% vs state ZIP avg
$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.
- 98038
Maple Valley (98038)
31,171 residents
- 98027
Issaquah (98027)
26,141 residents
- 98029
Issaquah (98029)
24,348 residents
- 98010 5,025
Black Diamond (98010)
5,025 residents
- 98051 3,270
Ravensdale (98051)
3,270 residents
- 98050 322
Preston (98050)
322 residents
What this shows Among its immediate neighbors, ZIP 98038 ranks the most populous - useful context the national average alone can't give.
ZIP 98038 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 98029
Issaquah (98029)
$170,759 median income
- 98027
Issaquah (98027)
$153,301 median income
- 98038
Maple Valley (98038)
$152,261 median income
- 98010
Black Diamond (98010)
$142,048 median income
- 98051
Ravensdale (98051)
$136,439 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.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 98038, both outside WA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (31,171 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in King County
Related Areas
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.
Related
Take this with you
What to do with ZIP 98038's numbers, next.
- See how ZIP 98038 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Maple Valley, WA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.