In 2023, Rock Island, WA had a population of 1.14k people with a median age of 36.4 and a median household income of $55,114. Between 2022 and 2023 the population of Rock Island, WA declined from 1,259 to 1,142, a −9.29% decrease and its median household income grew from $53,359 to $55,114, a 3.29% increase.
The 5 largest ethnic groups in Rock Island, WA are White (Non-Hispanic) (46.4%), Other (Hispanic) (36.4%), Two+ (Hispanic) (8.76%), White (Hispanic) (4.47%), and Black or African American (Non-Hispanic) (2.01%).
None of the households in Rock Island, WA reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
86.2% of the residents in Rock Island, WA are U.S. citizens.
In 2023, the median property value in Rock Island, WA was $255,500, and the homeownership rate was 84%.
Most people in Rock Island, WA drove alone to work, and the average commute time was 22.9 minutes. The average car ownership in Rock Island, WA was 2 cars per household.