Girls' name · peaked in 1957
Cynthia name popularity since 1925
707,986 babies born in the US from 1925 to 2025 were named Cynthia. Half of them were born in 1960 or earlier, so the typical Cynthia is about 66 years old in 2026. Cynthia peaked in 1957 as the #7 name for girls, and it was outside the top 1,000 in 2025.
Key facts
- US babies since 1925
- 707,986
- Named Cynthia, 1925–2025
- In 2025
- Not top 1,000
- #1,014 for girls in 2025
- Girls / boys
- 99.7% girls
- 706,027 girls · 1,959 boys
- Most popular in
- District of Columbia
- 1.42× its national share
Peak year is the year Cynthia made up the largest share of US girls, in records going back to 1880. Typical age is based on births from 1925 on, not on who is living today.
Cynthia births per year, 1925–2025
1957 was the biggest year for Cynthia both by count and as a share of all babies.
- Fastest rise: Between 1944 and 1949, Cynthia became 3.9× more common, from 1 in 516 baby girls to 1 in 133.
- Steepest fall: Between 2005 and 2010, its share of baby girls fell by 45%, from 1 in 1,170 to 1 in 2,130.
Shaded on the chart. Both compare Cynthia's share of all US girls five years apart, counting only years with at least 100 babies named Cynthia.
Decade by decade
Babies named Cynthia in each decade, and its rank among girls' names in the middle year of the decade (1935, 1945 … 2025).
| Decade | Girls | Boys | Rank |
|---|---|---|---|
| 1925–29 | 2,123 | 0 | – |
| 1930s | 9,666 | 29 | #179 |
| 1940s | 58,061 | 146 | #90 |
| 1950s | 263,432 | 460 | #11 |
| 1960s | 196,597 | 553 | #9 |
| 1970s | 80,196 | 333 | #40 |
| 1980s | 41,666 | 269 | #66 |
| 1990s | 31,313 | 158 | #113 |
| 2000s | 15,172 | 11 | #221 |
| 2010s | 5,946 | 0 | #540 |
| 2020–25 | 1,855 | 0 | #1,014 |
Ranks count every name given to at least 5 girls that year, so they can go past 1,000.
Generation fingerprint
59.9% of babies named Cynthia from 1925 to 2025 were born in the Baby Boom years (1946–1964). The full split by generation:
Where Cynthia is most popular
The index compares Cynthia's share of babies in each state with its share nationwide, 1925–2025 (1.50× = 50% more common). States with at least 300 babies named Cynthia.
| State | Index | Babies |
|---|---|---|
| District of Columbia | 1.42× | 4,660 |
| Connecticut | 1.19× | 9,197 |
| Maine | 1.18× | 3,602 |
| Louisiana | 1.16× | 14,841 |
| Alabama | 1.15× | 14,531 |
Other spellings
Spellings that sound like Cynthia and were given to at least 1,000 girls from 1925 to 2025, with the year each one was most popular.
| Spelling | Girls | Peak year |
|---|---|---|
| Cynthia (this page) | 706,027 | 1957 |
| Cinthia | 6,138 | 1996 |
Names with a similar story
Of the other 499 names on this site, these six had the share of babies closest in shape to Cynthia's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Cynthia.
Names from the same era
Other common names that peaked within two years of Cynthia (1957).
Source: U.S. Social Security Administration national and state baby-name data, which covers names given to at least 5 babies of one sex in a year. About the data