Marilou is an uncommon variant of Marylou that peaked in 1948 and has since faded.
Marilou is a girl name. It last appears in U.S. records in 2024. Marilou was first reported in SSA data in 1915 and peaked in 1948 (90 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2024 | 8 | 8 | #11,773 |
| 2023 | 6 | 6 | #14,544 |
| 2022 | 5 | 5 | #16,852 |
| 2021 | 5 | 5 | #16,827 |
| 2020 | 8 | 8 | #11,756 |
| 2019 | 5 | 5 | #17,125 |
| 2018 | 9 | 9 | #11,121 |
| 2017 | 5 | 5 | #17,516 |
| 2016 | 5 | 5 | #17,906 |
| 2013 | 8 | 8 | #12,741 |
| 2012 | 6 | 6 | #16,185 |
| 2011 | 5 | 5 | #18,554 |
| 2008 | 8 | 8 | #13,366 |
| 2007 | 6 | 6 | #16,828 |
| 2004 | 8 | 8 | #12,337 |
| 2002 | 10 | 10 | #9,986 |
| 2001 | 7 | 7 | #12,942 |
| 2000 | 8 | 8 | #11,408 |
| 1999 | 5 | 5 | #15,944 |
| 1998 | 6 | 6 | #13,501 |
| 1997 | 5 | — | #15,223 |
| 1996 | 14 | — | #6,607 |
| 1995 | 8 | — | #10,160 |
| 1994 | 6 | — | #12,796 |
| 1992 | 8 | — | #10,087 |
| 1991 | 12 | — | #7,234 |
| 1990 | 17 | — | #5,441 |
| 1989 | 10 | — | #7,815 |
| 1988 | 11 | — | #6,940 |
| 1987 | 8 | — | #8,455 |
| 1986 | 7 | — | #9,163 |
| 1985 | 18 | — | #4,376 |
| 1984 | 7 | — | #8,749 |
| 1983 | 16 | — | #4,599 |
| 1981 | 15 | — | #4,864 |
| 1980 | 14 | — | #5,134 |
| 1979 | 15 | — | #4,766 |
| 1978 | 11 | — | #5,810 |
| 1977 | 11 | — | #5,737 |
| 1976 | 11 | — | #5,439 |
| 1975 | 17 | — | #3,878 |
| 1974 | 8 | — | #6,613 |
| 1973 | 15 | — | #4,088 |
| 1972 | 12 | — | #4,682 |
| 1971 | 19 | — | #3,448 |
| 1970 | 24 | — | #2,902 |
| 1969 | 14 | — | #3,894 |
| 1968 | 21 | — | #2,835 |
| 1967 | 14 | — | #3,585 |
| 1966 | 16 | — | #3,219 |
| 1965 | 26 | — | #2,382 |
| 1964 | 29 | — | #2,283 |
| 1963 | 36 | — | #1,970 |
| 1962 | 35 | — | #1,972 |
| 1961 | 46 | — | #1,690 |
| 1960 | 58 | — | #1,450 |
| 1959 | 44 | — | #1,660 |
| 1958 | 64 | — | #1,326 |
| 1957 | 66 | — | #1,314 |
| 1956 | 65 | — | #1,296 |
| 1955 | 61 | — | #1,300 |
| 1954 | 73 | — | #1,174 |
| 1953 | 81 | — | #1,073 |
| 1952 | 85 | — | #1,020 |
| 1951 | 79 | — | #1,046 |
| 1950 | 79 | — | #1,032 |
| 1949 | 87 | — | #961 |
| 1948 | 90 | — | #918 |
| 1947 | 79 | — | #998 |
| 1946 | 69 | — | #1,022 |
| 1945 | 74 | — | #878 |
| 1944 | 77 | — | #872 |
| 1943 | 60 | — | #1,032 |
| 1942 | 72 | — | #924 |
| 1941 | 60 | — | #954 |
| 1940 | 61 | — | #921 |
| 1939 | 42 | — | #1,122 |
| 1938 | 55 | — | #962 |
| 1937 | 66 | — | #852 |
| 1936 | 50 | — | #975 |
| 1935 | 61 | — | #889 |
| 1934 | 75 | — | #779 |
| 1933 | 73 | — | #778 |
| 1932 | 66 | — | #857 |
| 1931 | 50 | — | #989 |
| 1930 | 80 | — | #792 |
| 1929 | 63 | — | #907 |
| 1928 | 70 | — | #877 |
| 1927 | 81 | — | #812 |
| 1926 | 46 | — | #1,125 |
| 1925 | 29 | — | #1,562 |
| 1924 | 31 | — | #1,522 |
| 1923 | 19 | — | #2,066 |
| 1922 | 16 | — | #2,354 |
| 1921 | 11 | — | #3,084 |
| 1920 | 10 | — | #3,259 |
| 1919 | 22 | — | #1,788 |
| 1918 | 16 | — | #2,258 |
| 1917 | 8 | — | #3,581 |
| 1916 | 8 | — | #3,447 |
| 1915 | 10 | — | #2,828 |