The baby name Marni appears in baby name data for the United States from 1964 to 2013. It was most popular in 1969 with 195 babies given the name.
In the later years of this period, Marni has become less common than it once was.
| Year | Count |
|---|---|
| 1964 | 10 |
| 1965 | 28 |
| 1966 | 56 |
| 1967 | 71 |
| 1968 | 172 |
| 1969 | 195 |
| 1970 | 169 |
| 1971 | 104 |
| 1972 | 90 |
| 1973 | 102 |
| 1974 | 56 |
| 1975 | 60 |
| 1976 | 59 |
| 1977 | 23 |
| 1978 | 64 |
| 1979 | 55 |
| 1980 | 34 |
| 1981 | 13 |
| 1982 | 7 |
| 1983 | 10 |
| 1984 | 15 |
| 1986 | 12 |
| 1988 | 6 |
| 1989 | 17 |
| 1990 | 5 |
| 1992 | 5 |
| 1993 | 6 |
| 1994 | 6 |
| 2013 | 5 |