| Official Name: | Lexington, Washington |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Washington#USA |
| Pushpin Label: | Lexington |
| Coordinates: | 46.1869°N -122.9058°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Washington |
| Subdivision Type2: | County |
| Subdivision Name2: | Cowlitz |
| Area Footnotes: | [1] |
| Area Total Km2: | 3.71 |
| Area Land Km2: | 3.47 |
| Area Water Km2: | 0.24 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population: | 3834 |
| Timezone: | Pacific (PST) |
| Utc Offset: | -8 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | -7 |
| Elevation Ft: | 25 |
| Postal Code Type: | ZIP Codes |
| Postal Code: | 98626 (Kelso) |
| Area Code: | 360 |
| Blank Name: | FIPS code |
| Blank Info: | 53-39230 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2805103 |
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.[2] 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 4miles to Longview and north 8miles to Castle Rock.