The baby name Marlo appears in baby name data for the United States from 1929 to 2024. It was most popular in 1970 with 616 babies given the name.
In the later years of this period, Marlo has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1929 | 5 |
| 1930 | 5 |
| 1934 | 6 |
| 1935 | 18 |
| 1936 | 5 |
| 1937 | 5 |
| 1938 | 6 |
| 1939 | 5 |
| 1941 | 21 |
| 1942 | 15 |
| 1948 | 15 |
| 1951 | 21 |
| 1952 | 12 |
| 1953 | 5 |
| 1954 | 15 |
| 1956 | 18 |
| 1962 | 5 |
| 1966 | 47 |
| 1967 | 292 |
| 1968 | 597 |
| 1969 | 504 |
| 1970 | 616 |
| 1971 | 505 |
| 1972 | 270 |
| 1972 | 38 |
| 1973 | 183 |
| 1973 | 43 |
| 1974 | 165 |
| 1974 | 36 |
| 1975 | 124 |
| 1975 | 6 |
| 1976 | 107 |
| 1976 | 17 |
| 1977 | 72 |
| 1977 | 46 |
| 1978 | 45 |
| 1978 | 44 |
| 1979 | 56 |
| 1979 | 20 |
| 1980 | 39 |
| 1980 | 30 |
| 1981 | 45 |
| 1982 | 21 |
| 1982 | 15 |
| 1983 | 15 |
| 1983 | 5 |
| 1984 | 12 |
| 1984 | 5 |
| 1985 | 12 |
| 1988 | 10 |
| 1988 | 6 |
| 1990 | 5 |
| 1995 | 6 |
| 1997 | 15 |
| 1998 | 14 |
| 1998 | 22 |
| 2002 | 5 |
| 2007 | 5 |
| 2008 | 6 |
| 2009 | 7 |
| 2010 | 30 |
| 2010 | 6 |
| 2011 | 21 |
| 2012 | 20 |
| 2013 | 26 |
| 2013 | 22 |
| 2014 | 26 |
| 2014 | 13 |
| 2015 | 36 |
| 2015 | 10 |
| 2016 | 19 |
| 2016 | 36 |
| 2017 | 39 |
| 2018 | 74 |
| 2018 | 21 |
| 2019 | 56 |
| 2019 | 30 |
| 2020 | 21 |
| 2020 | 19 |
| 2021 | 47 |
| 2021 | 39 |
| 2022 | 75 |
| 2022 | 37 |
| 2023 | 42 |
| 2023 | 76 |
| 2024 | 48 |
| 2024 | 35 |