Primarily a girl's name · Unisex — 89% girls / 11% boys
→ See names similar to Lou · Popular names of the 1950s · Girls names starting with L
Rank is among all girls' names registered that year.
| Year | Babies | Rank |
|---|---|---|
| 1880 | 131 | #125 |
| 1881 | 114 | #138 |
| 1882 | 131 | #137 |
| 1883 | 142 | #136 |
| 1884 | 146 | #145 |
| 1885 | 135 | #158 |
| 1886 | 129 | #178 |
| 1887 | 147 | #167 |
| 1888 | 169 | #173 |
| 1889 | 120 | #210 |
| 1890 | 132 | #210 |
| 1891 | 109 | #231 |
| 1892 | 137 | #222 |
| 1893 | 137 | #223 |
| 1894 | 118 | #253 |
| 1895 | 125 | #253 |
| 1896 | 130 | #247 |
| 1897 | 114 | #267 |
| 1898 | 156 | #236 |
| 1899 | 125 | #253 |
| 1900 | 140 | #275 |
| 1901 | 96 | #304 |
| 1902 | 121 | #286 |
| 1903 | 133 | #266 |
| 1904 | 117 | #297 |
| 1905 | 143 | #276 |
| 1906 | 100 | #334 |
| 1907 | 124 | #313 |
| 1908 | 147 | #293 |
| 1909 | 140 | #307 |
| 1910 | 144 | #318 |
| 1911 | 153 | #317 |
| 1912 | 212 | #315 |
| 1913 | 199 | #342 |
| 1914 | 227 | #348 |
| 1915 | 285 | #354 |
| 1916 | 308 | #351 |
| 1917 | 338 | #338 |
| 1918 | 371 | #335 |
| 1919 | 313 | #361 |
| 1920 | 336 | #357 |
| 1921 | 320 | #377 |
| 1922 | 350 | #349 |
| 1923 | 343 | #358 |
| 1924 | 381 | #349 |
| 1925 | 395 | #338 |
| 1926 | 417 | #323 |
| 1927 | 489 | #304 |
| 1928 | 425 | #320 |
| 1929 | 474 | #309 |
| 1930 | 468 | #306 |
| 1931 | 463 | #290 |
| 1932 | 540 | #270 |
| 1933 | 534 | #265 |
| 1934 | 559 | #263 |
| 1935 | 522 | #269 |
| 1936 | 506 | #271 |
| 1937 | 539 | #269 |
| 1938 | 532 | #274 |
| 1939 | 502 | #277 |
| 1940 | 494 | #281 |
| 1941 | 506 | #286 |
| 1942 | 536 | #293 |
| 1943 | 456 | #330 |
| 1944 | 463 | #314 |
| 1945 | 399 | #341 |
| 1946 | 478 | #343 |
| 1947 | 510 | #355 |
| 1948 | 439 | #379 |
| 1949 | 441 | #374 |
| 1950 | 414 | #395 |
| 1951 | 440 | #391 |
| 1952 | 569 | #345 |
| 1953 | 1,434 | #208 |
| 1954 | 1,495 | #204 |
| 1955 | 1,225 | #232 |
| 1956 | 1,066 | #259 |
| 1957 | 884 | #309 |
| 1958 | 851 | #314 |
| 1959 | 706 | #358 |
| 1960 | 593 | #388 |
| 1961 | 473 | #447 |
| 1962 | 396 | #487 |
| 1963 | 382 | #496 |
| 1964 | 277 | #599 |
| 1965 | 225 | #656 |
| 1966 | 186 | #725 |
| 1967 | 171 | #754 |
| 1968 | 169 | #770 |
| 1969 | 165 | #803 |
| 1970 | 159 | #849 |
| 1971 | 134 | #955 |
| 1972 | 101 | #1,108 |
| 1973 | 91 | #1,189 |
| 1974 | 64 | #1,527 |
| 1975 | 49 | #1,864 |
| 1976 | 48 | #1,896 |
| 1977 | 43 | #2,177 |
| 1978 | 38 | #2,373 |
| 1979 | 40 | #2,366 |
| 1980 | 19 | #4,080 |
| 1981 | 30 | #2,954 |
| 1982 | 29 | #3,061 |
| 1983 | 18 | #4,206 |
| 1984 | 19 | #4,095 |
| 1985 | 12 | #5,886 |
| 1986 | 13 | #5,625 |
| 1987 | 13 | #5,795 |
| 1988 | 11 | #6,919 |
| 1989 | 13 | #6,378 |
| 1990 | 12 | #7,138 |
| 1991 | 6 | #12,432 |
| 1992 | 9 | #9,190 |
| 1993 | 10 | #8,434 |
| 1994 | 7 | #11,264 |
| 1997 | 7 | #11,548 |
| 1998 | 8 | #10,713 |
| 1999 | 6 | #13,684 |
| 2000 | 9 | #10,390 |
| 2001 | 8 | #11,606 |
| 2002 | 8 | #11,742 |
| 2003 | 10 | #10,121 |
| 2004 | 10 | #10,379 |
| 2005 | 14 | #8,157 |
| 2006 | 9 | #12,017 |
| 2007 | 6 | #16,741 |
| 2008 | 6 | #16,658 |
| 2009 | 5 | #19,029 |
| 2010 | 11 | #10,201 |
| 2011 | 16 | #7,654 |
| 2012 | 18 | #7,043 |
| 2013 | 15 | #8,014 |
| 2014 | 22 | #5,909 |
| 2015 | 29 | #4,807 |
| 2016 | 35 | #4,207 |
| 2017 | 30 | #4,649 |
| 2018 | 39 | #3,822 |
| 2019 | 40 | #3,757 |
| 2020 | 43 | #3,527 |
| 2021 | 54 | #3,052 |
| 2022 | 62 | #2,772 |
| 2023 | 69 | #2,570 |
| 2024 | 70 | #2,541 |