Mariko is a rare variant of Margo that peaked in 1984 and has since faded.
Mariko is predominantly a girl name. In 2025 it ranked #9,869 for girl births in the United States (and #16,746 across all names), given to 10 babies. Mariko was first reported in SSA data in 1916 and peaked in 1984 (57 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 10 | 10 | #9,869 | — |
| 2024 | 8 | 8 | #11,772 | — |
| 2022 | 9 | 9 | #10,918 | — |
| 2021 | 8 | 8 | #11,808 | — |
| 2020 | 5 | 5 | #16,660 | — |
| 2019 | 10 | 10 | #10,211 | — |
| 2018 | 7 | 7 | #13,326 | — |
| 2017 | 10 | 10 | #10,456 | — |
| 2016 | 12 | 12 | #9,230 | — |
| 2015 | 8 | 8 | #12,582 | — |
| 2014 | 16 | 16 | #7,527 | — |
| 2013 | 12 | 12 | #9,408 | — |
| 2012 | 8 | 8 | #12,998 | — |
| 2011 | 11 | 11 | #10,168 | — |
| 2010 | 9 | 9 | #11,899 | — |
| 2009 | 10 | 10 | #11,198 | — |
| 2008 | 11 | 11 | #10,536 | — |
| 2007 | 9 | 9 | #12,306 | — |
| 2006 | 11 | 11 | #10,371 | — |
| 2005 | 15 | 15 | #7,769 | — |
| 2004 | 9 | 9 | #11,293 | — |
| 2003 | 11 | 11 | #9,472 | — |
| 2002 | 15 | 15 | #7,303 | — |
| 2001 | 17 | 17 | #6,515 | — |
| 2000 | 13 | 13 | #7,867 | — |
| 1999 | 12 | 12 | #8,035 | — |
| 1998 | 21 | 21 | #5,066 | — |
| 1997 | 21 | — | #4,946 | — |
| 1996 | 27 | — | #4,015 | — |
| 1995 | 21 | — | #4,783 | — |
| 1994 | 30 | — | #3,664 | — |
| 1993 | 18 | — | #5,355 | — |
| 1992 | 33 | — | #3,387 | — |
| 1991 | 34 | — | #3,264 | — |
| 1990 | 38 | — | #2,996 | — |
| 1989 | 31 | — | #3,368 | — |
| 1988 | 53 | — | #2,175 | — |
| 1987 | 39 | — | #2,599 | — |
| 1986 | 47 | — | #2,450 | #6,428 |
| 1985 | 51 | — | #2,093 | — |
| 1984 | 57 | — | #1,878 | — |
| 1983 | 44 | — | #2,223 | — |
| 1982 | 54 | — | #1,958 | — |
| 1981 | 55 | — | #1,950 | — |
| 1980 | 50 | — | #2,085 | — |
| 1979 | 18 | — | #4,153 | — |
| 1978 | 28 | — | #2,909 | — |
| 1977 | 19 | — | #3,856 | — |
| 1976 | 10 | — | #5,855 | — |
| 1975 | 10 | — | #5,804 | — |
| 1974 | 15 | — | #4,149 | — |
| 1973 | 10 | — | #5,418 | — |
| 1972 | 17 | — | #3,654 | — |
| 1971 | 14 | — | #4,238 | — |
| 1970 | 9 | — | #5,654 | — |
| 1969 | 8 | — | #5,775 | — |
| 1968 | 6 | — | #6,712 | — |
| 1967 | 7 | — | #5,816 | — |
| 1966 | 10 | — | #4,372 | — |
| 1965 | 6 | — | #6,247 | — |
| 1964 | 6 | — | #6,490 | — |
| 1963 | 5 | — | #7,245 | — |
| 1961 | 6 | — | #6,303 | — |
| 1960 | 7 | — | #5,501 | — |
| 1958 | 10 | — | #4,093 | — |
| 1957 | 6 | — | #5,825 | — |
| 1956 | 6 | — | #5,716 | — |
| 1930 | 7 | — | #3,909 | — |
| 1927 | 6 | — | #4,620 | — |
| 1926 | 7 | — | #4,138 | — |
| 1925 | 6 | — | #4,760 | — |
| 1924 | 14 | — | #2,622 | — |
| 1923 | 10 | — | #3,273 | — |
| 1922 | 8 | — | #3,885 | — |
| 1921 | 15 | — | #2,455 | — |
| 1919 | 7 | — | #4,099 | — |
| 1918 | 6 | — | #4,627 | — |
| 1916 | 7 | — | #3,789 | — |