Welcome to Rock Island ...

The city of Rock Island is located on the Columbia River (central Washington state).

Rock Island is located in Douglas County<1>.

While we don't have a date for the founding of Rock Island, you might consider that their post office opened  in 1931.

A typical abbreviation for Rock Island: Rock Is. (in Canada, 'Isld.' is the more common abbreviation.)

From the  Census Estimates for 2019, Rock Island has a population of 1,255 people<2> (see below for details).

The community of Rock Island is 640 feet [195 m] above sea level.<3>.

Time Zone: Rock Island lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time

Rock Island is within the (509) area code.

The ZIP code for Rock Island: 98850<4>

Population Details ...

Taken from the 2019 Census Estimates, Rock Island had an population of 1,255 people. This is an increase of 59.26% since the 2010 Census (or an increase of 45.42% since the 2000 Census).

At the time of the 2010 Census, Rock Island had a population of 788 people. This makes Rock Island the county's 5th most populous community.

The population of Rock Island represents 0.01% of the population of Washington (which has 6,724,540 people), making it the state's 211st most populous community.

With a 2010 count of 788 people, the population of Rock Island decreased 8.69% from the 2000 Census (which had a count of 863 people).

More information can be found on the Census Page for Rock Island.

Communities Also Named Rock Island ...

Using our Gazetteer, we found that there are 21 communities that are also named Rock Island - they are located in Florida (2), Idaho, Illinois, Indiana, Kansas (2), Manitoba, Massachusetts, Nevada, Oklahoma (2), Quebec, Tennessee, Texas (6) and Virginia.

For more information, see our Tidbits & Trivia Page for Rock Island.

Communities near Rock Island ...

We have created a list of 10 communities that are near Rock Island.

• Wenatchee
  (8 miles [12.9 km] to the northwest)
  • Jump to our Gazetteer entry for Wenatchee
  • Wenatchee is located in Chelan County
  • Population from the 2020 Census: 34,219 people
  • Jump to TripAdvisor's Tourism page for Wenatchee <5>
• East Wenatchee
  (7 miles [11.3 km] to the west)
  • Jump to our Gazetteer entry for East Wenatchee
  • East Wenatchee is located in Douglas County
  • Population from the 2020 Census: 14,012 people
  • Jump to TripAdvisor's Tourism page for East Wenatchee <5>
• Quincy
  (16 miles [25.7 km] to the southeast)
  • Jump to our Gazetteer entry for Quincy
  • Quincy is located in Grant County
  • Population from the 2020 Census: 8,387 people
  • Jump to TripAdvisor's Tourism page for Quincy <5>
• Cashmere
  (18 miles [29 km] to the northwest)
  • Jump to our Gazetteer entry for Cashmere
  • Cashmere is located in Chelan County
  • Population from the 2020 Census: 3,160 people
  • Jump to TripAdvisor's Tourism page for Cashmere <5>
• Waterville
  (19 miles [30.6 km] to the north)
  • Jump to our Gazetteer entry for Waterville
  • Waterville is located in Douglas County
  • Population from the 2020 Census: 1,197 people
  • Jump to TripAdvisor's Tourism page for Waterville <5>
• Appleyard
  (7 miles [11.3 km] to the west)
  • Jump to our Gazetteer entry for Appleyard
  • Appleyard is located in Chelan County
• East Wenatchee Bench
  (7 miles [11.3 km] to the northwest)
  • Note: The GPS coordinates that we are using for East Wenatchee Bench have been provided by the GNIS.<6> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for East Wenatchee Bench
  • East Wenatchee Bench is located in Douglas County
• West Wenatchee
  (10 miles [16.1 km] to the northwest)
  • Note: The GPS coordinates that we are using for West Wenatchee have been provided by the GNIS.<6> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for West Wenatchee
  • West Wenatchee is located in Chelan County
• Palisades
  (11 miles [17.7 km] to the east)
  • Jump to our Gazetteer entry for Palisades
  • Palisades is located in Douglas County
• Sunnyslope
  (11 miles [17.7 km] to the northwest)
  • Note: The GPS coordinates that we are using for Sunnyslope have been provided by the GNIS.<6> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Sunnyslope
  • Sunnyslope is located in Chelan County

To Help With Your Genealogy Research ...

We have a couple of sections for those tracing their genealogy.

We created a list of cemeteries that are in the area around Rock Island. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Rock Island.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Rock Island. Our list includes information such as whether the 1895 community had a post office or railroad service. See our List of 1890's Communities around Rock Island.

We also have a detailed list of newspapers that have been published in the area around Rock Island. See our Newspapers Page for Rock Island.

TripAdvisor Tourism Pages for Rock Island ...

Looking for more information about Rock Island? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.

In addition to the Tourism page for Rock Island, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Rock Island.

Adding Rock Island to Our Gazetteer ...

We originally found mention of Rock Island in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.

From our notes, the earliest published mention we've found for Rock Island was in the document titled List of Post Offices from Cameron Blevins and Richard Helbock.<7>

From that list, the Rock Island post office opened in 1931.

We also found Rock Island on a map titled Mobile Oil Map of Washington (1949).

For more details, see References and Mentions for Rock Island.

Off-the-Road Links ...

Unfortunately, we don't know of a website for Rock Island. If you can help, please contact us through our Feedback Page.

The official website for Douglas County: www.douglascountywa.net/

The official website for State of Washington: https://access.wa.gov/