98850   Zip Code Rock Island Douglas WA United States

City Rock Island
County Douglas
State Washington
Latitude 47.40048
Longitude -120.03459
Population 2,032
Density 26.68 people per square mile
Time Zone America/Los Angeles
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $83,125
Median individual: $37,065

Race

Mode: 54.6% White

Gender

 54.3% female 

Rent

  $1031 / month  

Median house value: $371,834.0

Age

Median: 37.1 years old

Education

With at least college degree: 10.9%
With STEM degree: 25.7%

Marital Status

 55.4% married 

Never married: 26.7%

Labor Force Participation

 60.8% working 

Unemployed: 1.7%

Average Family Size

 3.01 people 

Commute Time

 30.2 minutes 

Health Care

 17.7% uninsured 

Poverty

 10.5%

All data comes from the SimpleMaps US Zips Comprehensive Database, February 2026.

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