Lou vs Louisa
Side-by-side comparison of Lou and Louisa - popularity rank, total births, peak decade, and historical trends from Social Security Administration data.
Which name is more popular?
| Metric | Lou | Louisa |
| Current Rank | #2508 | #732 |
| Total Births (all years) | 34,109 | 21,932 |
| Peak Year | 1954 | 2021 |
| Peak Year Births | 1,495 | 424 |
| Peak Decade | 1950s | 2010s |
| Gender | Girl | Girl |
| First Recorded Year | 1880 | 1880 |
Births by Decade
| Decade | Lou | Louisa |
| 1880s | 1,364 | 1,420 |
| 1890s | 1,283 | 1,272 |
| 1900s | 1,261 | 993 |
| 1910s | 2,550 | 1,619 |
| 1920s | 3,930 | 1,765 |
| 1930s | 5,165 | 1,227 |
| 1940s | 4,722 | 1,284 |
| 1950s | 9,084 | 1,442 |
| 1960s | 3,037 | 1,371 |
| 1970s | 767 | 1,005 |
| 1980s | 177 | 1,072 |
| 1990s | 65 | 1,084 |
| 2000s | 85 | 1,154 |
| 2010s | 255 | 2,939 |
| 2020s | 364 | 2,285 |
Recent Annual Births (2014–present)
| Year | Lou | Louisa |
| 2014 | 22 | 281 |
| 2015 | 29 | 303 |
| 2016 | 35 | 347 |
| 2017 | 30 | 373 |
| 2018 | 39 | 386 |
| 2019 | 40 | 422 |
| 2020 | 43 | 383 |
| 2021 | 54 | 424 |
| 2022 | 62 | 340 |
| 2023 | 69 | 346 |
| 2024 | 71 | 385 |
| 2025 | 65 | 407 |