Winlock is a city in Lewis County, Washington, United States. The population was 1,166 at the 2000 census. It named after a Civil War veteran 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, Sweden and Germany. Winlock apartments for rent comparison page shows most up to date rent information on Winlock apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.