Synthia is an uncommon girls' name that peaked in 1965 and has since faded.
Synthia is a girl name. In 2025 it ranked #13,047 for girl births in the United States (and #21,775 across all names), given to 7 babies. Synthia was first reported in SSA data in 1890 and peaked in 1965 (67 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 7 | 7 | #13,047 |
| 2024 | 9 | 9 | #11,013 |
| 2023 | 7 | 7 | #13,310 |
| 2022 | 6 | 6 | #15,114 |
| 2021 | 10 | 10 | #10,220 |
| 2020 | 5 | 5 | #17,253 |
| 2019 | 11 | 11 | #9,670 |
| 2018 | 14 | 14 | #8,116 |
| 2017 | 11 | 11 | #9,867 |
| 2016 | 15 | 15 | #7,940 |
| 2015 | 8 | 8 | #12,888 |
| 2014 | 11 | 11 | #10,074 |
| 2013 | 16 | 16 | #7,710 |
| 2012 | 18 | 18 | #7,111 |
| 2011 | 17 | 17 | #7,392 |
| 2010 | 22 | 22 | #6,164 |
| 2009 | 23 | 23 | #6,070 |
| 2008 | 23 | 23 | #6,118 |
| 2007 | 19 | 19 | #7,063 |
| 2006 | 19 | 19 | #6,806 |
| 2005 | 35 | 35 | #4,109 |
| 2004 | 17 | 17 | #7,047 |
| 2003 | 23 | 23 | #5,399 |
| 2002 | 31 | 31 | #4,168 |
| 2001 | 28 | 28 | #4,433 |
| 2000 | 30 | 30 | #4,174 |
| 1999 | 34 | 34 | #3,631 |
| 1998 | 41 | 41 | #3,107 |
| 1997 | 40 | — | #3,030 |
| 1996 | 56 | — | #2,369 |
| 1995 | 40 | — | #2,970 |
| 1994 | 39 | — | #3,032 |
| 1993 | 44 | — | #2,762 |
| 1992 | 50 | — | #2,544 |
| 1991 | 29 | — | #3,709 |
| 1990 | 50 | — | #2,459 |
| 1989 | 38 | — | #2,920 |
| 1988 | 36 | — | #2,928 |
| 1987 | 27 | — | #3,410 |
| 1986 | 24 | — | #3,630 |
| 1985 | 26 | — | #3,402 |
| 1984 | 22 | — | #3,704 |
| 1983 | 30 | — | #2,901 |
| 1982 | 26 | — | #3,333 |
| 1981 | 25 | — | #3,422 |
| 1980 | 30 | — | #2,990 |
| 1979 | 28 | — | #3,064 |
| 1978 | 18 | — | #4,063 |
| 1977 | 30 | — | #2,772 |
| 1976 | 13 | — | #4,862 |
| 1975 | 22 | — | #3,245 |
| 1974 | 29 | — | #2,604 |
| 1973 | 37 | — | #2,164 |
| 1972 | 33 | — | #2,306 |
| 1971 | 40 | — | #2,101 |
| 1970 | 46 | — | #1,902 |
| 1969 | 45 | — | #1,868 |
| 1968 | 45 | — | #1,772 |
| 1967 | 47 | — | #1,680 |
| 1966 | 58 | — | #1,460 |
| 1965 | 67 | — | #1,347 |
| 1964 | 52 | — | #1,587 |
| 1963 | 45 | — | #1,736 |
| 1962 | 49 | — | #1,626 |
| 1961 | 47 | — | #1,660 |
| 1960 | 56 | — | #1,485 |
| 1959 | 40 | — | #1,761 |
| 1958 | 50 | — | #1,524 |
| 1957 | 46 | — | #1,609 |
| 1956 | 36 | — | #1,794 |
| 1955 | 41 | — | #1,614 |
| 1954 | 37 | — | #1,697 |
| 1953 | 25 | — | #2,115 |
| 1952 | 30 | — | #1,858 |
| 1951 | 20 | — | #2,309 |
| 1950 | 18 | — | #2,422 |
| 1949 | 19 | — | #2,332 |
| 1948 | 25 | — | #1,947 |
| 1947 | 19 | — | #2,347 |
| 1946 | 15 | — | #2,585 |
| 1945 | 9 | — | #3,360 |
| 1944 | 7 | — | #4,020 |
| 1943 | 12 | — | #2,841 |
| 1942 | 7 | — | #4,085 |
| 1941 | 7 | — | #3,918 |
| 1938 | 5 | — | #4,932 |
| 1930 | 5 | — | #5,170 |
| 1890 | 6 | — | #1,325 |