Merion is a very rare name used for both girls and boys that was most common in the 1930s and has all but disappeared.
Merion is predominantly a boy name. It last appears in U.S. records in 1959. Merion first appears in 1915 and peaked in 1921 (13 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 1959 | 5 | — | #6,900 | — |
| 1958 | 6 | — | — | #3,795 |
| 1956 | 5 | — | — | #4,294 |
| 1955 | 10 | — | #6,430 | #4,206 |
| 1953 | 5 | — | — | #4,170 |
| 1951 | 5 | — | #5,958 | — |
| 1949 | 5 | — | — | #4,047 |
| 1948 | 8 | — | #4,104 | — |
| 1947 | 10 | — | #3,620 | — |
| 1946 | 5 | — | — | #3,845 |
| 1944 | 11 | — | #5,048 | #3,341 |
| 1943 | 5 | — | — | #3,875 |
| 1942 | 5 | — | #5,130 | — |
| 1941 | 11 | — | #4,854 | #3,383 |
| 1940 | 6 | — | #4,197 | — |
| 1937 | 6 | — | — | #3,399 |
| 1936 | 11 | — | #4,650 | #3,407 |
| 1935 | 7 | — | — | #3,156 |
| 1934 | 16 | — | #3,369 | #2,880 |
| 1933 | 5 | — | — | #3,988 |
| 1932 | 7 | — | — | #3,273 |
| 1931 | 8 | — | #3,408 | — |
| 1930 | 10 | — | — | #2,727 |
| 1929 | 5 | — | #5,062 | — |
| 1928 | 13 | — | #4,552 | #3,592 |
| 1927 | 7 | — | #4,143 | — |
| 1926 | 7 | — | #4,161 | — |
| 1924 | 15 | — | #4,313 | #3,414 |
| 1923 | 6 | — | — | #4,095 |
| 1922 | 14 | — | #4,309 | #3,755 |
| 1921 | 13 | — | — | #2,461 |
| 1920 | 6 | — | — | #4,118 |
| 1918 | 6 | — | — | #4,010 |
| 1916 | 5 | — | #4,917 | — |
| 1915 | 7 | — | — | #3,278 |