first name
MARILOU
of 53,615 first names recorded in the 2020 Census
Of the 5,888 people named Marilou, 61.9% reported their origin as Asian or Pacific Islander, 29.9% as White and 6.4% as Hispanic or Latino. Virtually all are female (99.9%). These count how people described themselves on the 2020 Census, not where the name comes from.
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Marilou peaked in 1948, when 90 babies got the name.
At least 3,231 babies have been given the name since 1915. Years SSA withheld, because fewer than 5 were born, are skipped rather than drawn as zero.
Marilou by decade
Among all names given to American babies, its best decade was the 1930s, when it ranked #1,613. The largest share of babies named Marilou, 37.9%, were born during the baby boom (1946–1964).
Rank counts both sexes together, among every name SSA recorded that decade; the number under it is births. The 2020s run only to 2025. Generation years follow Pew Research Center, which has not named a generation after 2012.
Where Marilou is most common
Compared with all babies born in each state since 1910, Marilou has been most common in Ohio (3.3×), Illinois (3.1×), and Indiana (3.1×), and least common in California (1.6×).
1,333 births recorded by state, 1910–2025. 2× means twice as common as nationally. States with fewer than 30 such births are left blank, and SSA withholds any year with fewer than 5 in a state, so small states read low.
Either side of Marilou
Spelled almost the same
8 first names in the 2020 Census spelled within a letter or two of Marilou, most common first.
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🔎 MARILOU 🟦🟦🟦🟦🟦🟦🟦🟦⬜⬜ 1 in 51,296 Americans Rarer than 82.5% of us Peaked in 1948 with 90 babies Beat that 👇 https://howrareismy.name/first/marilou/