Winlock is a city in Lewis County, Washington, United States. The population was 1,472 at the 2020 census. It was named after territorial army general, Winlock M. Miller, who briefly resided there. Winlock is mostly famous for having the World’s Largest Egg, reflecting its former status as a major producer of eggs. Early in its history, Winlock attracted many immigrants from Finland, Germany, and Sweden.

Winlock began as a Northern Pacific Railroad construction camp called Wheeler’s Camp in c. 1871. The railroad was later in the process of extending its line from Kalama to Tacoma, Washington. Dr. C. C. Pagett, an in advance resident, donated the house for the townsite. In 1873, he named it for General William Winlock Miller of Olympia, a man of some renown in the area. Miller had promised to offer a assistant professor bell to the town if it were to be named after him. The town was incorporated in 1883.

Lumbering was the initial economic driver. A number of sawmills were established beginning in the late 1800s. In the late 1920s there were four mills in operation, employing 350 men and producing beyond 30 million board feet of fir lumber annually.

Agriculture developed in the to come 1900s afterward the impetus on the raising of poultry and the production of eggs. A branch of the Washington Cooperative Egg & Poultry Association located in the town constructed a large building in the north decrease of town, near the railroad tracks, around 1920. It housed grain storage bins and poultry management facilities. The building remains standing today. Several hatcheries were located in the town. More than 750,000 baby chicks were produced during the 1928 season.