Nine out of every ten persons 1 year old and over in the United States in April 1952 had moved at least once in their lifetime according to the results of sample survey released today by Robert W. Burgess, Director, Bureau of the Census, Department of Commerce. About one-fourth of the total had moved since January 1951 three-fifths since 1946 three-fourths since 1941, and four-fifths since 1935. Persons whose most recent move occurred before 1935 constituted 10 percent of the total population, and persons always living in the same house, 9 percent. The great majority of this latter group was made up of children under 18 years old; only about 2 percent of the adult population had always lived in the same house.