Lexington, Washington
Lexington is a census-designated place in Cowlitz County, Washington, United States. The population was 3,834 at the 2020 census. 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 to Longview and north to Castle Rock.
Geography
According to the United States Census Bureau, the CDP has a total area of, of which is land and is water.Demographics
The top five reported ancestries were English, Spanish, Other Indo-European, Asian and Pacific Islander, and Other.The median age in the CDP was 41.9 years.
| Race | Number | Percent |
| White | 3,018 | 78.72% |
| Black or African American | 11 | 0.29% |
| Native American | 39 | 1.02% |
| Asian | 92 | 2.40% |
| Pacific Islander | 15 | 0.39% |
| Some Other Race | 16 | 0.42% |
| Mixed/Multi-Racial | 240 | 6.26% |
| Hispanic or Latino | 403 | 10.51% |
| Total | 3,834 | 100.00% |