Arkansas Creek

Castle Rock is a city in Cowlitz County, Washington, United States. Located between the Willapa Hills and the western base of Mount St. Helens, Castle Rock is at the heart of Washington timber country in the Pacific temperate rain forest. Castle Rock is part of the Longview, Washington Metropolitan Statistical Area; the population was 2,446 as of the 2020 census.

Castle Rock High School is a rural public high school in Castle Rock, Washington.

Sandy Bend is an unincorporated community in Cowlitz County, Washington, south of the city of Castle Rock, west of Washington State Route 411, and to the west of the Cowlitz River. Sandy Bend is located along or near Sandy Bend Road between Castle Rock and West Side Highway. The Sandy Bend community is part of the Castle Rock School District, a K-12 school district of about 1,300 students.

KLYK (94.5 FM) is a radio station broadcasting an Adult Top 40 format. Licensed to Kelso, Washington, United States, the station is currently owned by Bicoastal Media Licenses IV, LLC and features programming from Premiere Networks and Westwood One. The station focuses on Today's Best Music with the slogan "Southwest Washington's Hit Music Channel."

The Toutle River is a 17.2-mile (27.7 km) tributary of the Cowlitz River in the U.S. state of Washington. It rises in two forks merging near Toutle below Mount St. Helens and joins the Cowlitz near Castle Rock, 20 miles (32 km) upstream of the larger river's confluence with the Columbia River.The river was altered by the 1980 eruption of Mount St. Helens, a nearby volcano, and subsequent flows of ash and other debris. It was further altered by dredging to remove sediment, and by construction of the Toutle River Sediment Retention Structure on the North Fork Toutle River.

Pleasant Hill is an unincorporated community in Cowlitz County, Washington, south of the city of Castle Rock. Pleasant Hill is located along or near Pleasant Hill Road between Castle Rock and Ostrander. The northern end of Pleasant Hill community is part of the Castle Rock School District, while the southern end is part of the Kelso School District.

The Laughlin Round Barn near Castle Rock, Washington is a round barn that was built in 1883. It was listed on the National Register of Historic Places in 1986.

Ostrander is an unincorporated community in Cowlitz County, Washington, north of the city of Kelso. Ostrander is located north on North Pacific Avenue from exit 42 of Interstate 5. The Ostrander community is part of the Kelso School District, a K-12 school district of nearly 5,000 students.

Lexington is an unincorporated community and census-designated place (CDP) in Cowlitz County, Washington, United States. As of the 2020 census, it had a population of 3,834. During the 2010 census, Lexington was part of the West Side Highway CDP. The CDP is in the western part of the county and is bordered to the southwest by Beacon Hill and to the east by the Cowlitz River. State Route 411 runs through the community, following the Cowlitz. It leads south 4 miles (6 km) to Longview and north 8 miles (13 km) to Castle Rock.

West Side Highway was a census-designated place (CDP) in Cowlitz County, Washington, named after a state highway (SR 411) running north–south between Longview and Castle Rock. As of the 2010 census, the CDP population was 5,517. Prior to the 2020 census, the CDP was split into two new CDPs, Beacon Hill and Lexington.

Beacon Hill is an unincorporated community and census-designated place (CDP) in Cowlitz County, Washington, United States. As of the 2020 census, it had a population of 2,211. During the 2010 census, Beacon Hill was part of the West Side Highway CDP. The CDP is in the western part of the county and is bordered to the south and west by Longview Heights, to the northeast by Lexington, and to the east by the Cowlitz River. State Route 411 runs through the east side of the community, following the Cowlitz. It leads south 3 miles (5 km) to Longview and north 9 miles (14 km) to Castle Rock.

Longview Heights is a census-designated place (CDP) in Cowlitz County, Washington, United States. The population was 3,851 at the 2010 Census. The CDP is known locally as Columbia Heights.