 The U.S. Census Bureau defines "baby boomers" as those born between mid-1946 and mid-1964, although the U.S. birth rate began to shoot up in 1941 and to decline after 1957.Deborah Carr considers baby boomers to be those born between 1944 and 1959, while Strauss and Howe place the beginning of the baby boom in 1943.In Canada, the baby boom is usually defined as occurring from 1947 to 1966.