The baby name Louis appears in baby name data for the United States from 1910 to 2024. It was most popular in 1921 with 8,648 babies given the name.
In the later years of this period, Louis has become less common than it once was.
| Year | Count |
|---|---|
| 1910 | 7 |
| 1910 | 2,062 |
| 1911 | 2,034 |
| 1912 | 4,013 |
| 1913 | 4,740 |
| 1914 | 18 |
| 1914 | 6,257 |
| 1915 | 5 |
| 1915 | 7,376 |
| 1916 | 7,929 |
| 1917 | 22 |
| 1917 | 7,975 |
| 1918 | 14 |
| 1918 | 8,416 |
| 1919 | 5 |
| 1919 | 7,898 |
| 1920 | 13 |
| 1920 | 8,287 |
| 1921 | 12 |
| 1921 | 8,648 |
| 1922 | 26 |
| 1922 | 8,407 |
| 1923 | 16 |
| 1923 | 8,340 |
| 1924 | 28 |
| 1924 | 8,347 |
| 1925 | 28 |
| 1925 | 8,028 |
| 1926 | 28 |
| 1926 | 7,822 |
| 1927 | 34 |
| 1927 | 7,719 |
| 1928 | 24 |
| 1928 | 7,508 |
| 1929 | 34 |
| 1929 | 7,025 |
| 1930 | 28 |
| 1930 | 7,151 |
| 1931 | 29 |
| 1931 | 6,608 |
| 1932 | 21 |
| 1932 | 5,764 |
| 1933 | 5 |
| 1933 | 5,385 |
| 1934 | 6 |
| 1934 | 5,415 |
| 1935 | 5,316 |
| 1936 | 6 |
| 1936 | 5,153 |
| 1937 | 5,258 |
| 1938 | 7 |
| 1938 | 4,888 |
| 1939 | 4,809 |
| 1940 | 5,147 |
| 1941 | 5,370 |
| 1942 | 6,204 |
| 1943 | 5,948 |
| 1944 | 5,392 |
| 1945 | 5 |
| 1945 | 4,928 |
| 1946 | 5,074 |
| 1947 | 6,840 |
| 1948 | 7,000 |
| 1949 | 6,233 |
| 1950 | 5 |
| 1950 | 5,987 |
| 1951 | 8 |
| 1951 | 5,684 |
| 1952 | 5,629 |
| 1953 | 7 |
| 1953 | 5,929 |
| 1954 | 5,482 |
| 1955 | 6,204 |
| 1956 | 6,381 |
| 1957 | 5 |
| 1957 | 5,727 |
| 1958 | 5,496 |
| 1959 | 5,010 |
| 1960 | 4,767 |
| 1961 | 4,302 |
| 1962 | 4,115 |
| 1963 | 4,180 |
| 1964 | 4,020 |
| 1965 | 3,855 |
| 1966 | 3,271 |
| 1967 | 5 |
| 1967 | 3,187 |
| 1968 | 3,004 |
| 1969 | 2,892 |
| 1970 | 2,754 |
| 1971 | 2,558 |
| 1972 | 2,159 |
| 1973 | 1,913 |
| 1974 | 5 |
| 1974 | 1,941 |
| 1975 | 1,845 |
| 1976 | 10 |
| 1976 | 1,944 |
| 1977 | 2,232 |
| 1978 | 5 |
| 1978 | 1,867 |
| 1979 | 2,043 |
| 1980 | 1,923 |
| 1981 | 1,889 |
| 1982 | 1,714 |
| 1983 | 1,827 |
| 1984 | 1,634 |
| 1985 | 1,376 |
| 1986 | 5 |
| 1986 | 1,797 |
| 1987 | 1,626 |
| 1988 | 1,602 |
| 1989 | 1,736 |
| 1990 | 1,689 |
| 1991 | 1,650 |
| 1992 | 1,571 |
| 1993 | 1,617 |
| 1994 | 1,440 |
| 1995 | 1,348 |
| 1996 | 1,263 |
| 1997 | 1,285 |
| 1998 | 1,154 |
| 1999 | 1,189 |
| 2000 | 1,098 |
| 2001 | 1,112 |
| 2002 | 1,107 |
| 2003 | 1,102 |
| 2004 | 1,197 |
| 2005 | 1,045 |
| 2006 | 1,056 |
| 2007 | 971 |
| 2008 | 905 |
| 2009 | 868 |
| 2010 | 968 |
| 2011 | 969 |
| 2012 | 1,170 |
| 2013 | 1,157 |
| 2014 | 1,348 |
| 2015 | 1,433 |
| 2016 | 1,512 |
| 2017 | 1,606 |
| 2018 | 1,673 |
| 2019 | 1,716 |
| 2020 | 1,358 |
| 2021 | 1,566 |
| 2022 | 1,512 |
| 2023 | 1,543 |
| 2024 | 1,576 |