Popularity in the United States (by decade)
Numbers
| Louie (feminine) | Louie (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | - | - | #689 | 0.020 | ||
| 2010 | - | - | #1044 | 0.009 | ||
| 2000 | - | - | #1489 | 0.005 | ||
| 1990 | - | - | #1069 | 0.006 | ||
| 1980 | - | - | #791 | 0.007 | ||
| 1970 | - | - | #619 | 0.010 | ||
| 1960 | - | - | #498 | 0.013 | ||
| 1950 | - | - | #396 | 0.017 | ||
| 1940 | - | - | #343 | 0.023 | ||
| 1930 | #1583 | 0.002 | #291 | 0.032 | ||
| 1920 | #1241 | 0.003 | #278 | 0.037 | ||
| 1910 | #873 | 0.005 | #258 | 0.040 | ||
| 1900 | #801 | 0.007 | #248 | 0.043 | ||
| 1890 | #609 | 0.010 | #264 | 0.036 | ||
| 1880 | #435 | 0.016 | #274 | 0.033 | ||
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