Lousie vs Lou
Side-by-side comparison of Lousie and Lou - popularity rank, total births, peak decade, and historical trends from Social Security Administration data.
Which name is more popular?
| Metric | Lousie | Lou |
| Current Rank | Unranked | #2508 |
| Total Births (all years) | 142 | 34,109 |
| Peak Year | 1918 | 1954 |
| Peak Year Births | 12 | 1,495 |
| Peak Decade | 1920s | 1950s |
| Gender | Girl | Girl |
| First Recorded Year | 1913 | 1880 |
Births by Decade
| Decade | Lousie | Lou |
| 1880s | - | 1,364 |
| 1890s | - | 1,283 |
| 1900s | - | 1,261 |
| 1910s | 36 | 2,550 |
| 1920s | 57 | 3,930 |
| 1930s | 25 | 5,165 |
| 1940s | 7 | 4,722 |
| 1950s | 5 | 9,084 |
| 1960s | 12 | 3,037 |
| 1970s | - | 767 |
| 1980s | - | 177 |
| 1990s | - | 65 |
| 2000s | - | 85 |
| 2010s | - | 255 |
| 2020s | - | 364 |
Recent Annual Births (2014–present)
| Year | Lousie | Lou |
| 2014 | - | 22 |
| 2015 | - | 29 |
| 2016 | - | 35 |
| 2017 | - | 30 |
| 2018 | - | 39 |
| 2019 | - | 40 |
| 2020 | - | 43 |
| 2021 | - | 54 |
| 2022 | - | 62 |
| 2023 | - | 69 |
| 2024 | - | 71 |
| 2025 | - | 65 |