Cottondale is a census-designated place in Tuscaloosa County, Alabama, United States, now encompassed in the eastern suburbs of Tuscaloosa. The ZIP Code is 35453. Alternative spellings include Cotton Dale, Kennedale, Kennidale and Konnidale. Cottondale was the site of cotton mills where the Knights of Labor had some success in organizing drives in the late 1880s; and where "Mother" Jones worked in 1904 while studying conditions for working women and children in the South.