Lilliwaup, WA · standard
ZIP Code 98555
Mason County, Washington - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 599
- 11/sq mi Low-density area
- $462,500
- Median home value Above-median home value
- 36.3%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Lilliwaup pairs upper-quartile home values, in a rural, homeowner-dominated area.
- Top 15%
- home value, US ZIPs
- 11
- people per sq mi
- 76%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 98555 against every reporting US ZIP.
ZIP code 98555 is a sparsely populated ZIP (a standard USPS delivery area) in Lilliwaup, Mason County, Washington, home to just 599 residents across 53.0 square miles, a density of 11 people per square mile, in the Los Angeles time zone.
Median household income is not on file for ZIP 98555, but per-capita income is $55,077. The poverty rate is 16.7%, with unemployment at 0.0%; those measures add context to the income figure. Median home value is $462,500 (10% below the average Washington ZIP); 76.4% of occupied homes are owner-occupied.
A solid share of residents have a four-year degree: 36.3% of adults hold a bachelor's degree or higher, the median age is 67.2, and the average commute is -. The page also surfaces 1 ZIP codes within roughly 10 miles and 6 more in Mason County, so 98555 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 →
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 98555, Lilliwaup, 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
599
Population
53.0
Area (sq mi)
11
People / sq mi
Los Angeles
Time Zone
standard
ZIP Type
Who lives in ZIP 98555?
67.2
Median Age
70.4%
Male
29.6%
Female
0.0%
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?
$55,077
Per Capita Income
16.7%
Poverty Rate
0.0%
Unemployment Rate
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
793housing units
793
Total Housing Units
233
Occupied Units
560
Vacant Units
1.39
Avg Household Size
Occupancy Type
$462,500
Median Home Value
-10% vs state ZIP avg
1981
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 9 business establishments in ZIP 98555, employing approximately 121 people with a combined annual payroll of $6,062,000.
9
Businesses
121
Employees
$6.1M
Annual Payroll
1
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Other services (except public administration) | 3 | 33.3% |
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 98555 vs 98588 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 98588 | Tahuya, WA | 1,829 | 6.6 mi |
More ZIP Codes in Mason County
Related Areas
Frequently Asked Questions
What county is ZIP code 98555 in?
ZIP code 98555 (Lilliwaup) is located in Mason County, Washington. Mason County contains multiple ZIP codes, see the full list at /counties/mason-wa.
What is the population of ZIP code 98555?
ZIP code 98555 in Lilliwaup, WA has a population of 599 according to the Census Bureau ACS 2023 estimates.
What is the average home value in ZIP 98555?
The median home value in ZIP 98555 is $462,500, which is 66% above the national average of $278,155.
What is the demographic makeup of ZIP 98555?
The largest racial group in ZIP 98555 is White at 84.0%.
How many businesses are in ZIP code 98555?
ZIP code 98555 has 9 business establishments employing approximately 121 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 98555?
In ZIP code 98555, 74.5% of residents aged 25+ have a high school diploma or higher, and 36.3% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 98555?
In ZIP code 98555, approximately 76.4% of occupied housing units are owner-occupied and 23.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 98555?
The poverty rate in ZIP code 98555 is 16.7% 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 98555's numbers, next.
- See how ZIP 98555 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Lilliwaup, WA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.