Rock Island, WA · standard
ZIP Code 98850
Douglas County, Washington - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,543
- 26/sq mi
- $83,125
- Median income
- $374,700
- Median home value
- 10.9%
- Bachelor's or higher
The verdict
Rock Island pairs an above-median household income with upper-quartile home values, in a rural, homeowner-dominated area.
- Top 34%
- household income, US ZIPs
- Top 23%
- home value, US ZIPs
- 26
- people per sq mi
- 82%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 98850 against every reporting US ZIP.
ZIP code 98850 covers 58.9 square miles in Rock Island, Douglas County, Washington (a standard USPS delivery area), with a modest 1,543 residents on file, a density of 26 people per square mile, in the Los Angeles time zone.
ZIP 98850 lands in the middle-income range, with a median household income of $83,125 (9% below the Washington average), while per-capita income is $27,599. Poverty here runs at 10.5%, with unemployment measured at 1.7%. On housing, the median home value is $374,700 (27% below the state average) with median rent at $1,031 per month, and 82.0% of occupied units are owner-occupied.
Formal educational attainment runs low here: just 10.9% of adults hold a bachelor's degree or higher, the median age is 37.1, and the average commute is -. A geography-based comparison follows: 1 ZIP codes within about 10 miles of 98850, plus 6 more within Douglas County, give a clearer read than the national average 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 98850
Top 5 sectors by establishment count in Rock Island, WA
Which industries have the most business establishments in ZIP 98850.
- Construction
Construction
14 establishments
- Retail trade 5
Retail trade
5 establishments
- Administrative and support and waste management and remediation services 3
Administrative and support and waste management and remediation services
3 establishments
- Accommodation and food services 3
Accommodation and food services
3 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 98850, Rock Island, 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
1,543
Population
58.9
Area (sq mi)
26
People / sq mi
Los Angeles
Time Zone
standard
ZIP Type
Who lives in ZIP 98850?
37.1
Median Age
45.7%
Male
54.3%
Female
16.7%
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?
$83,125
Median Household Income
-9% vs state
$27,599
Per Capita Income
10.5%
Poverty Rate
1.7%
Unemployment Rate
How ZIP 98850 ranks nationally
Rock Island, WA household income vs. every US ZIP code
Median household income, the full national distribution, with this ZIP marked
$83,125 Top 34% higher than 66% 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?
711
Total Housing Units
684
Occupied Units
27
Vacant Units
2.80
Avg Household Size
Occupancy Type
$374,700
Median Home Value
-27% vs state
$1,031
Median Rent
1977
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 36 business establishments in ZIP 98850, employing approximately 178 people with a combined annual payroll of $9,320,000.
36
Businesses
178
Employees
$9.3M
Annual Payroll
4
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 14 | 38.9% |
| Retail trade | 5 | 13.9% |
| Administrative and support and waste management and remediation services | 3 | 8.3% |
| Accommodation and food services | 3 | 8.3% |
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 98850 vs 98828 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 98828 | Malaga, WA | 2,146 | 4.6 mi |
More ZIP Codes in Douglas County
Related Areas
Frequently Asked Questions
What county is ZIP code 98850 in? ▼
What is the population of ZIP code 98850? ▼
What is the median household income in ZIP 98850? ▼
What is the average home value in ZIP 98850? ▼
What is the demographic makeup of ZIP 98850? ▼
How many businesses are in ZIP code 98850? ▼
What are the main industries in ZIP code 98850? ▼
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What percentage of residents own vs. rent in ZIP 98850? ▼
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Read our methodology to see how this data is sourced, computed, and verified.