FIRST NAME
Lou
Lou is the 1,359th most common female first name in the United States, recorded for 10,947 women and girls in the latest Census. It is also given to 5,962 men and boys.
AS A FEMALE NAME · #1,359 TODAY
1990 CENSUS
49,742
living · #604
2020 CENSUS
10,947
living · #1,359
BABIES NAMED LOU BY BIRTH YEAR · 1880–2025
202565
As a female name, Lou peaked in 1954, when 1,495 babies were named Lou (the #204 female name that year).
SOURCE: SOCIAL SECURITY ADMINISTRATION (US BIRTHS)
AS A MALE NAME · #1,429 TODAY
1990 CENSUS
12,435
living · #1,025
2020 CENSUS
5,962
living · #1,429
BABIES NAMED LOU BY BIRTH YEAR · 1880–2025
202581
As a male name, Lou peaked in 2025, when 81 babies were named Lou (the #1929 male name that year).
SOURCE: SOCIAL SECURITY ADMINISTRATION (US BIRTHS)