Castle Rock, WA Profile: Facts, Map & Data


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Castle Rock, Washington - Basic Facts

The City of Castle Rock had a population of 2,332 as of July 1, 2017.

The primary coordinate point for Castle Rock is located at latitude 46.2719 and longitude -122.9039 in Cowlitz County. The formal boundaries for the City of Castle Rock (see map below) encompass a land area of 1.99 sq. miles and a water area of 0.19 sq. miles. Cowlitz County is in the Pacific time zone (GMT -8). The elevation is 56 feet.

The City of Castle Rock (GNIS ID: 2409409) 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.

Washington is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Castle Rock is located within Castle Rock Division of Cowlitz County.

Beneath the boundary map are tables with Castle Rock population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Castle Rock: Castlerock.

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City of Castle Rock, WA Boundary Map

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Boundary Maps: Castle Rock Division | Cowlitz County | Washington Counties

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Castle Rock, WA Data & Demographics (As of July 1, 2017)


Total Population 2,332
Daytime Population: Workers 712
Daytime Population: Residents 1,306
Total Daytime Population (TDP) 2,018
Ratio TDP/Total Population1 0.87
Population in Households 2,332
Population in Familes 1,878
Population in Group Qrtrs 0
Population Density2 1,170
Diversity Index3 25


Median Household Income $47,465
Average Household Income $58,592
Per Capita Income $23,089


Total Housing Units 1,001 (100%)
Owner Occupied HU 620 (61.9%)
Renter Occupied HU 297 (29.7%)
Vacant Housing Units 85 ( 8.5%)
Median Home Value $173,837
Average Home Value $237,237


Total Households 916
Average Household Size 2.55
Family Households 620
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 1.05% 0.93%
Households 0.94% 0.88%
Families 0.88% 0.79%
Median Household Income   1.85%
Per Capita Income   2.45%

Castle Rock, WA - Peer Comparisons by Rank and Percentile

The table below compares Castle Rock to the other 627 incorporated cities, towns and CDPs in Washington by rank and percentile using July 1, 2017 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 # 292 54th
Population Density # 258 59th
Diversity Index # 463 26th
Median Household Income # 443 30th
Per Capita Income # 494 21st

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

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