Synthia
Synthia was given to 7 girls in 2025, #13,043 among girls’ names; 2,428 Americans have been recorded with it since 1890 (Social Security Administration, published May 2026).
An estimated 2,190 Americans named Synthia and born in the U.S. are alive in 2026 (90% of everyone recorded); the median is 46 years old and half are between 30 and 62.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Synthia by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Synthia mean?
Wiktionary, English section
Synthia is “a female given name from Ancient Greek.”
A rare (non-standard) spelling of Cynthia.
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Synthia?
#13,043 among girls’ names, 2025
Synthia fell from #12,883 in 2015 to #13,043 in 2025 among girls’ names; its share of girls born fell from 4.5 to 4.4 per million.
67 babies in 1965, the peak
Synthia peaked in 1965, when 67 girls were given it, #1,347 among girls’ names. The 7 births of 2025 are 10% of that peak.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2025 | 7 | #13,043 | 4.4 |
| 2024 | 9 | #11,008 | 5.6 |
| 2023 | 7 | #13,305 | 4.4 |
| 2022 | 6 | #15,109 | 3.7 |
| 2021 | 10 | #10,215 | 6.1 |
| 2020 | 5 | #17,248 | 3.1 |
| 2019 | 11 | #9,665 | 6.6 |
| 2018 | 14 | #8,112 | 8.2 |
| 2017 | 11 | #9,863 | 6.4 |
| 2016 | 15 | #7,937 | 8.5 |
Every recorded year (88)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2015 | 8 | #12,883 | 4.5 |
| 2014 | 11 | #10,069 | 6.2 |
| 2013 | 16 | #7,706 | 9.1 |
| 2012 | 18 | #7,107 | 10.2 |
| 2011 | 17 | #7,388 | 9.7 |
| 2010 | 22 | #6,162 | 12.4 |
| 2009 | 23 | #6,067 | 12.5 |
| 2008 | 23 | #6,115 | 12.2 |
| 2007 | 19 | #7,059 | 9.9 |
| 2006 | 19 | #6,804 | 10.0 |
| 2005 | 35 | #4,105 | 18.9 |
| 2004 | 17 | #7,042 | 9.3 |
| 2003 | 23 | #5,394 | 12.6 |
| 2002 | 31 | #4,164 | 17.3 |
| 2001 | 28 | #4,429 | 15.6 |
| 2000 | 30 | #4,169 | 16.5 |
| 1999 | 34 | #3,627 | 19.2 |
| 1998 | 41 | #3,104 | 23.2 |
| 1997 | 40 | #3,027 | 23.0 |
| 1996 | 56 | #2,366 | 31.9 |
| 1995 | 40 | #2,965 | 22.7 |
| 1994 | 39 | #3,027 | 21.8 |
| 1993 | 44 | #2,757 | 24.3 |
| 1992 | 50 | #2,539 | 27.1 |
| 1991 | 29 | #3,703 | 15.5 |
| 1990 | 50 | #2,454 | 26.3 |
| 1989 | 38 | #2,914 | 20.6 |
| 1988 | 36 | #2,923 | 20.2 |
| 1987 | 27 | #3,407 | 15.5 |
| 1986 | 24 | #3,628 | 14.0 |
| 1985 | 26 | #3,401 | 15.1 |
| 1984 | 22 | #3,703 | 13.1 |
| 1983 | 30 | #2,900 | 18.0 |
| 1982 | 26 | #3,332 | 15.4 |
| 1981 | 25 | #3,422 | 15.0 |
| 1980 | 30 | #2,990 | 18.1 |
| 1979 | 28 | #3,064 | 17.4 |
| 1978 | 18 | #4,063 | 11.8 |
| 1977 | 30 | #2,772 | 19.6 |
| 1976 | 13 | #4,860 | 8.9 |
| 1975 | 22 | #3,245 | 15.1 |
| 1974 | 29 | #2,604 | 19.8 |
| 1973 | 37 | #2,164 | 25.4 |
| 1972 | 33 | #2,306 | 21.7 |
| 1971 | 40 | #2,101 | 24.0 |
| 1970 | 46 | #1,902 | 26.3 |
| 1969 | 45 | #1,868 | 26.7 |
| 1968 | 45 | #1,772 | 27.4 |
| 1967 | 47 | #1,680 | 28.5 |
| 1966 | 58 | #1,460 | 34.3 |
| 1965 | 67 | #1,347 | 38.0 |
| 1964 | 52 | #1,587 | 27.4 |
| 1963 | 45 | #1,735 | 23.3 |
| 1962 | 49 | #1,625 | 24.9 |
| 1961 | 47 | #1,659 | 23.3 |
| 1960 | 56 | #1,484 | 27.7 |
| 1959 | 40 | #1,760 | 19.8 |
| 1958 | 50 | #1,523 | 24.9 |
| 1957 | 46 | #1,608 | 22.5 |
| 1956 | 36 | #1,793 | 17.9 |
| 1955 | 41 | #1,613 | 21.0 |
| 1954 | 37 | #1,696 | 19.1 |
| 1953 | 25 | #2,114 | 13.3 |
| 1952 | 30 | #1,857 | 16.2 |
| 1951 | 20 | #2,308 | 11.1 |
| 1950 | 18 | #2,421 | 10.5 |
| 1949 | 19 | #2,331 | 11.1 |
| 1948 | 25 | #1,946 | 14.7 |
| 1947 | 19 | #2,346 | 10.7 |
| 1946 | 15 | #2,584 | 9.5 |
| 1945 | 9 | #3,358 | 6.9 |
| 1944 | 7 | #4,018 | 5.3 |
| 1943 | 12 | #2,840 | 8.6 |
| 1942 | 7 | #4,083 | 5.2 |
| 1941 | 7 | #3,916 | 5.8 |
| 1938 | 5 | #4,930 | 4.5 |
| 1930 | 5 | #5,168 | 4.4 |
| 1890 | 6 | #1,324 | 31.5 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Synthia a boy’s or a girl’s name?
Synthia has been recorded only for girls: SSA lists no boys with the name in 88 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Synthia: the SSA national file counts each sex separately.
How many people are named Synthia, and how old are they?
2,190 alive in 2026, estimated
That is 90% of the 2,428 Americans ever recorded as Synthia. The median Synthia alive today is 46 years old; half are between 30 and 62.
The 2020 Census counted 2,484 people named Synthia (2,477 women and girls, 7 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 2,218 born in the U.S. The Census count is 12% above that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Silent Generation | 1928-1945 | 24 |
| Baby Boomers | 1946-1964 | 536 |
| Generation X | 1965-1980 | 541 |
| Millennials | 1981-1996 | 547 |
| Generation Z | 1997-2012 | 415 |
| Generation Alpha | 2013-2025 | 129 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Where are babies named Synthia born?
The states with the most babies named Synthia are California, Texas and New York, with 88% of its births recorded by state since 1910.
| State | Since 1910 | Rank, girls | vs. national |
|---|---|---|---|
| California | 292 | not ranked | 1.1× |
| Texas | 133 | not ranked | 0.7× |
| New York | 25 | not ranked | 0.1× |
| Florida | 22 | not ranked | 0.2× |
| Alabama | 11 | not ranked | 0.3× |
| Georgia | 11 | not ranked | 0.2× |
| Ohio | 11 | not ranked | 0.1× |
| Illinois | 5 | not ranked | 0.0× |
Where Synthia is more common than its national share predicts
Relative to its national share, Synthia is most over-represented in California: since 1910 it was given 1.1 times as often there as its national share each year would predict.
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among girls’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Synthia with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 3 names spelled alike, given to 2,809 babies since 1880, Synthia is the most given (86% of them).
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Synthia
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Synthia and names like it
- Compare Synthia and SinthiaBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1960sSynthia peaked in 1965.
- California’s most given namesThe state where SSA recorded the most babies named Synthia since 1910.
- Ancient Greek namesWiktionary’s origin for Synthia: every such name, by how often it is given.
- The top names of 1965The year the most babies were named Synthia.
- The names of the MillennialsMost people named Synthia alive today were born 1981-1996.
- Names starting with SMost given first.