Cas
Cas was last recorded in 2024, when 10 babies were given it; 181 Americans have been recorded with it between 1881 and 2024 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Cas by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Cas?
Unranked in 2025
Its last boys’ rank on record is #7,863, in 2024; SSA lists a name only in years with 5 or more births.
13 babies in 2020, the peak
Cas peaked in 2020, when 13 boys were given it, #6,358 among boys’ names. It was not recorded in 2025.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2024 | 10 | #7,863 | 5.8 |
| 2023 | 9 | #8,365 | 5.3 |
| 2022 | 7 | #10,004 | 4.0 |
| 2021 | 7 | #9,896 | 4.0 |
| 2020 | 13 | #6,358 | 7.5 |
| 2019 | 7 | #9,916 | 3.9 |
| 2018 | 11 | #7,207 | 6.1 |
| 2017 | 8 | #8,981 | 4.3 |
| 2016 | 6 | #10,963 | 3.2 |
| 2015 | 8 | #8,871 | 4.2 |
Every recorded year (26)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2014 | 6 | #10,937 | 3.1 |
| 2011 | 5 | #12,586 | 2.6 |
| 2007 | 5 | #12,656 | 2.4 |
| 1993 | 5 | #8,897 | 2.5 |
| 1992 | 9 | #5,706 | 4.5 |
| 1988 | 7 | #5,843 | 3.7 |
| 1985 | 5 | #6,668 | 2.7 |
| 1967 | 5 | #4,040 | 2.9 |
| 1958 | 5 | #4,035 | 2.4 |
| 1953 | 6 | #3,477 | 3.0 |
| 1935 | 5 | #3,728 | 4.8 |
| 1923 | 5 | #4,329 | 4.6 |
| 1915 | 10 | #2,478 | 11.8 |
| 1912 | 5 | #2,608 | 11.6 |
| 1902 | 5 | #1,171 | 40.8 |
| 1881 | 7 | #717 | 69.5 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Cas a boy’s or a girl’s name?
Cas has been recorded only for boys: SSA lists no girls with the name in 26 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Cas: the SSA national file counts each sex separately.
How many people are named Cas, and how old are they?
An estimated 138 Americans named Cas and born in the U.S. are alive in 2026 (76% of everyone recorded); the median is 9 years old and half are between 6 and 33. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 461 people named Cas (134 women and girls, 327 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 98 born in the U.S. The Census count is 4.7 times that prediction. Possible reasons: the Census records the name people give, which for many is the short form Cas rather than the name on their birth record, and it counts people born abroad, whom SSA’s files leave out.
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).
Names spelled alike
Of these 6 names spelled alike, given to 5,089 babies since 1880, Cas is the fourth most given (3.6% of them). In 2025 none of their 311 babies recorded by SSA was a Cas (SSA lists a name only with 5 or more babies of one sex).
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.
More about Cas and names like it
- Compare Cas and CaiusBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2020sCas peaked in 2020.
- The top names of 2020The year the most babies were named Cas.
- The names of Generation AlphaMost people named Cas alive today were born 2013-2025.
- Names starting with CMost given first.