Rock Island, WA Profile: Facts, Map & Data

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Rock Island, Washington - Basic Facts

The City of Rock Island had a population of 816 as of July 1, 2015. Rock Island ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Washington. See peer rankings below.

The primary coordinate point for Rock Island is located at latitude 47.3729 and longitude -120.1369 in Douglas County. The formal boundaries for the City of Rock Island (see map below) encompass a land area of 0.62 sq. miles and a water area of 0.13 sq. miles. Douglas County is in the Pacific time zone (GMT -8). The elevation is 640 feet.

The City of Rock Island has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Beneath the boundary map are tables with Rock Island population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2015.

Alternate Unofficial Names for Rock Island: Hammond.

City of Rock Island, WA Boundary Map

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Boundary Maps: East Wenatchee Division | Douglas County | Washington Counties

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Rock Island, WA Data & Demographics (As of July 1, 2015)

POPULATION

Total Population 816
Population in Households 816
Population in Familes 698
Population in Group Qrtrs 0
Population Density1 1,331
Diversity Index2 79
 

HOUSEHOLDS

Total Households 272
Average Household Size 3.0
Family Households 198
Average Family Size 4

HOUSING

Total Housing Units 289 (100%)
Owner Occupied HU 169 (58.5%)
Renter Occupied HU 103 (35.6%)
Vacant Housing Units 17 ( 5.9%)
Median Home Value $205,208
Average Home Value $293,047
 

INCOME

Median Household Income $42,714
Average Household Income $54,045
Per Capita Income $18,771
  (Compound Annual Growth Rates)

GROWTH RATES

2010-2015 2015-2020
Population 0.67% 0.77%
Households 0.72% 0.8%
Families 1.94% 0.8%
Median Household Income   2.96%
Per Capita Income   2.76%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

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Rock Island, WA - Peer Comparisons by Rank and Percentile

The table below compares Rock Island to the other 628 incorporated cities, towns and CDPs in Washington by rank and percentile using July 1, 2015 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 416 34th
Population Density1 # 230 64th
Diversity Index2 # 30 95th
Median Household Income # 453 28th
Per Capita Income # 544 14th

Additional comparisons and rankings can be made with a VERY EASY TO USE Washington Census Data Comparison Tool.