Uveal malignant melanomas were diagnosed in 15 patients in the resident population of Rochester and Olmsted County, Minnesota, from 1935 through 1974. There were five males and ten females. In this well-defined community, the annual incidence of uveal malignant melanoma for the 40-year period was calculated to be seven per million per year. The incidence in the resident population under age 50 years was three per million, whereas for those age 50 years or older, it increased to 21 per million per year.