Marykathleen
Marykathleen was last recorded in 1999, when 8 babies were given it; 83 Americans have been recorded with it between 1966 and 1999 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Marykathleen by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Marykathleen?
Unranked in 2025
Its last girls’ rank on record is #11,023, in 1999; SSA lists a name only in years with 5 or more births.
9 babies in 1983, the peak
Marykathleen peaked in 1983, when 9 girls were given it, #7,074 among girls’ names. It was not recorded in 2025.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 1999 | 8 | #11,023 | 4.5 |
| 1997 | 9 | #9,528 | 5.2 |
| 1995 | 5 | #14,884 | 2.8 |
| 1992 | 6 | #12,763 | 3.3 |
| 1990 | 8 | #9,820 | 4.2 |
| 1988 | 6 | #11,234 | 3.4 |
| 1987 | 8 | #8,464 | 4.6 |
| 1985 | 5 | #11,777 | 2.9 |
| 1983 | 9 | #7,074 | 5.4 |
| 1979 | 7 | #8,624 | 4.4 |
Every recorded year (12)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 1977 | 7 | #8,068 | 4.6 |
| 1966 | 5 | #7,235 | 3.0 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Marykathleen a boy’s or a girl’s name?
Marykathleen has been recorded only for girls: SSA lists no boys with the name in 12 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Marykathleen: the SSA national file counts each sex separately.
How many people are named Marykathleen, and how old are they?
An estimated 80 Americans named Marykathleen and born in the U.S. are alive in 2026, too few to state an age range. An estimate from SSA’s births and life tables, not a count.
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.
Names that rose and fell in the same decades as Marykathleen
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.