Castle Rock city, Washington
Official LSAD Designation: Castle Rock city • Census GEOID: 5310565
• Cowlitz County
Castle Rock city is an incorporated city in Cowlitz County, Washington. According to official records from the Census (2025), Castle Rock city had an estimated population of 2,442 residents. Official Census Bureau geographic records classify this community under LSAD designation Castle Rock city (GEOID 5310565).
Local Government Administration U.S. Census Bureau GMAF
City Of Castle Rock
Municipal
Official Title:
Clerk/treasurer
Address:
PO BOX 370, CASTLE ROCK WA 98611-0370
County Of Cowlitz
County
Official Title:
Board Of Cowlitz County Commissioner
Address:
207 N 4TH AVE, RM 305, KELSO WA 98626-4191
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 2,442 | 2025 |
| Median Household Income | $69,639 | 2020-2024 |
| Median Home Value | $348,600 | 2020-2024 |
| Land Area | 2.09 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).