Cleaster is a very rare name used for both girls and boys that was most common in the 1950s and has all but disappeared.
Cleaster is predominantly a girl name. It last appears in U.S. records in 1958. Cleaster first appears in 1922 and peaked in 1950 (14 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 1958 | 6 | — | #5,523 | — |
| 1957 | 5 | — | — | #4,085 |
| 1954 | 8 | — | #4,344 | — |
| 1953 | 5 | — | #5,806 | — |
| 1952 | 5 | — | #5,697 | — |
| 1951 | 6 | — | #4,938 | — |
| 1950 | 14 | — | #2,793 | — |
| 1949 | 6 | — | #4,769 | — |
| 1948 | 12 | — | #4,268 | #3,764 |
| 1946 | 7 | — | — | #2,956 |
| 1945 | 6 | — | #4,111 | — |
| 1944 | 5 | — | #4,684 | — |
| 1943 | 11 | — | #4,273 | #3,629 |
| 1933 | 5 | — | #4,325 | — |
| 1930 | 5 | — | #4,672 | — |
| 1929 | 7 | — | #3,735 | — |
| 1927 | 8 | — | #3,608 | — |
| 1925 | 5 | — | — | #4,314 |
| 1923 | 5 | — | #5,093 | — |
| 1922 | 6 | — | #4,548 | — |