Marcos is an established variant of Marcus that peaked in 2001 and has grown less common since.
Marcos is predominantly a boy name. In 2025 it ranked #517 for boy births in the United States (and #1,049 across all names), given to 579 babies — 592 including U.S. territories. Marcos first appears in 1888 and peaked in 2001 (1,415 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 579 | 592 | — | #517 |
| 2024 | 643 | 653 | — | #481 |
| 2023 | 640 | 657 | — | #475 |
| 2022 | 619 | 636 | — | #491 |
| 2021 | 602 | 619 | — | #490 |
| 2020 | 621 | 648 | — | #480 |
| 2019 | 658 | 687 | — | #454 |
| 2018 | 706 | 739 | — | #432 |
| 2017 | 732 | 786 | — | #425 |
| 2016 | 722 | 771 | — | #431 |
| 2015 | 762 | 819 | — | #408 |
| 2014 | 769 | 829 | — | #405 |
| 2013 | 870 | 944 | — | #363 |
| 2012 | 893 | 957 | — | #344 |
| 2011 | 891 | 951 | — | #340 |
| 2010 | 1,027 | 1,094 | — | #312 |
| 2009 | 1,212 | 1,283 | — | #280 |
| 2008 | 1,349 | 1,446 | — | #261 |
| 2007 | 1,388 | 1,451 | — | #254 |
| 2006 | 1,386 | 1,476 | — | #248 |
| 2005 | 1,360 | 1,434 | — | #246 |
| 2004 | 1,375 | 1,452 | #15,361 | #244 |
| 2003 | 1,379 | 1,482 | — | #241 |
| 2002 | 1,328 | 1,442 | — | #247 |
| 2001 | 1,415 | 1,516 | — | #240 |
| 2000 | 1,412 | 1,505 | #16,631 | #239 |
| 1999 | 1,321 | 1,412 | #15,933 | #243 |
| 1998 | 1,341 | 1,443 | — | #236 |
| 1997 | 1,325 | — | #15,208 | #234 |
| 1996 | 1,358 | — | #10,158 | #224 |
| 1995 | 1,152 | — | #10,157 | #249 |
| 1994 | 1,152 | — | #6,934 | #253 |
| 1993 | 1,119 | — | #12,814 | #257 |
| 1992 | 1,083 | — | #12,728 | #263 |
| 1991 | 1,034 | — | #12,483 | #264 |
| 1990 | 971 | — | #9,810 | #273 |
| 1989 | 812 | — | #10,398 | #300 |
| 1988 | 735 | — | #8,890 | #310 |
| 1987 | 715 | — | #7,131 | #306 |
| 1986 | 743 | — | #12,053 | #284 |
| 1985 | 732 | — | #8,890 | #284 |
| 1984 | 672 | — | #8,741 | #300 |
| 1983 | 678 | — | #9,743 | #295 |
| 1982 | 631 | — | #7,914 | #316 |
| 1981 | 639 | — | #8,669 | #304 |
| 1980 | 630 | — | — | #309 |
| 1979 | 541 | — | #6,492 | #340 |
| 1978 | 528 | — | — | #334 |
| 1977 | 527 | — | — | #339 |
| 1976 | 451 | — | — | #359 |
| 1975 | 521 | — | — | #335 |
| 1974 | 463 | — | — | #357 |
| 1973 | 459 | — | #9,217 | #362 |
| 1972 | 406 | — | — | #390 |
| 1971 | 362 | — | — | #427 |
| 1970 | 367 | — | — | #427 |
| 1969 | 308 | — | — | #446 |
| 1968 | 265 | — | — | #467 |
| 1967 | 248 | — | — | #479 |
| 1966 | 199 | — | — | #545 |
| 1965 | 245 | — | — | #490 |
| 1964 | 220 | — | — | #527 |
| 1963 | 187 | — | — | #579 |
| 1962 | 186 | — | — | #575 |
| 1961 | 177 | — | — | #594 |
| 1960 | 165 | — | — | #611 |
| 1959 | 153 | — | — | #624 |
| 1958 | 126 | — | — | #680 |
| 1957 | 109 | — | — | #717 |
| 1956 | 103 | — | — | #723 |
| 1955 | 107 | — | — | #711 |
| 1954 | 99 | — | — | #726 |
| 1953 | 94 | — | — | #740 |
| 1952 | 95 | — | — | #724 |
| 1951 | 82 | — | — | #779 |
| 1950 | 94 | — | — | #709 |
| 1949 | 84 | — | — | #751 |
| 1948 | 75 | — | — | #793 |
| 1947 | 53 | — | — | #981 |
| 1946 | 70 | — | — | #798 |
| 1945 | 52 | — | — | #873 |
| 1944 | 41 | — | — | #1,030 |
| 1943 | 45 | — | — | #1,004 |
| 1942 | 47 | — | — | #983 |
| 1941 | 40 | — | — | #1,032 |
| 1940 | 48 | — | — | #926 |
| 1939 | 39 | — | — | #1,024 |
| 1938 | 42 | — | — | #987 |
| 1937 | 27 | — | — | #1,300 |
| 1936 | 40 | — | — | #1,002 |
| 1935 | 35 | — | — | #1,116 |
| 1934 | 38 | — | — | #1,069 |
| 1933 | 40 | — | — | #1,023 |
| 1932 | 41 | — | — | #1,046 |
| 1931 | 54 | — | — | #872 |
| 1930 | 43 | — | — | #1,064 |
| 1929 | 48 | — | — | #980 |
| 1928 | 53 | — | — | #935 |
| 1927 | 54 | — | — | #945 |
| 1926 | 40 | — | #4,643 | #1,257 |
| 1925 | 46 | — | — | #1,017 |
| 1924 | 44 | — | — | #1,086 |
| 1923 | 54 | — | — | #935 |
| 1922 | 30 | — | — | #1,360 |
| 1921 | 56 | — | — | #944 |
| 1920 | 48 | — | — | #1,000 |
| 1919 | 36 | — | — | #1,182 |
| 1918 | 30 | — | — | #1,308 |
| 1917 | 39 | — | — | #1,075 |
| 1916 | 21 | — | — | #1,578 |
| 1915 | 24 | — | — | #1,396 |
| 1914 | 27 | — | — | #1,119 |
| 1913 | 13 | — | — | #1,556 |
| 1912 | 12 | — | — | #1,493 |
| 1911 | 7 | — | — | #1,483 |
| 1908 | 7 | — | — | #1,178 |
| 1907 | 6 | — | — | #1,288 |
| 1906 | 7 | — | — | #1,076 |
| 1905 | 7 | — | — | #1,054 |
| 1904 | 6 | — | — | #1,158 |
| 1888 | 5 | — | — | #1,124 |