Kostas is a rare boys' name that peaked in 1974 and has grown less common since.
Kostas is a boy name. In 2025 it ranked #10,247 for boy births in the United States (and #21,095 across all names), given to 7 babies. Kostas was first reported in SSA data in 1961 and peaked in 1974 (17 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 7 | 7 | #10,247 |
| 2023 | 10 | 10 | #8,022 |
| 2022 | 7 | 7 | #10,392 |
| 2020 | 8 | 8 | #9,192 |
| 2019 | 5 | 5 | #13,245 |
| 2016 | 5 | 5 | #13,350 |
| 2015 | 5 | 5 | #13,180 |
| 2014 | 5 | 5 | #13,188 |
| 2012 | 8 | 8 | #9,353 |
| 2011 | 8 | 8 | #9,240 |
| 2010 | 9 | 9 | #8,499 |
| 2009 | 12 | 12 | #7,056 |
| 2008 | 7 | 7 | #10,547 |
| 2007 | 10 | 10 | #7,924 |
| 2005 | 7 | 7 | #9,692 |
| 2002 | 9 | 9 | #7,382 |
| 1998 | 5 | 5 | #10,563 |
| 1997 | 6 | — | #8,780 |
| 1991 | 6 | — | #7,814 |
| 1990 | 5 | — | #8,885 |
| 1989 | 6 | — | #7,484 |
| 1988 | 8 | — | #5,486 |
| 1987 | 8 | — | #5,234 |
| 1986 | 6 | — | #6,367 |
| 1985 | 10 | — | #4,218 |
| 1984 | 6 | — | #6,011 |
| 1983 | 15 | — | #3,007 |
| 1982 | 7 | — | #5,342 |
| 1981 | 13 | — | #3,326 |
| 1980 | 11 | — | #3,744 |
| 1979 | 8 | — | #4,650 |
| 1978 | 10 | — | #3,732 |
| 1977 | 10 | — | #3,734 |
| 1976 | 7 | — | #4,701 |
| 1975 | 8 | — | #4,139 |
| 1974 | 17 | — | #2,411 |
| 1973 | 11 | — | #3,136 |
| 1972 | 10 | — | #3,259 |
| 1971 | 16 | — | #2,421 |
| 1970 | 10 | — | #3,182 |
| 1969 | 6 | — | #4,186 |
| 1968 | 5 | — | #4,456 |
| 1967 | 5 | — | #4,280 |
| 1966 | 5 | — | #4,268 |
| 1962 | 5 | — | #4,371 |
| 1961 | 5 | — | #4,384 |