Popularity in the United States (by decade)
Numbers
| Leon (masculine) | Leon (feminine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | #188 | 0.111 | - | - | ||
| 2010 | #300 | 0.058 | - | - | ||
| 2000 | #504 | 0.024 | - | - | ||
| 1990 | #439 | 0.025 | - | - | ||
| 1980 | #277 | 0.040 | - | - | ||
| 1970 | #227 | 0.058 | - | - | ||
| 1960 | #194 | 0.070 | - | - | ||
| 1950 | #145 | 0.104 | - | - | ||
| 1940 | #109 | 0.156 | - | - | ||
| 1930 | #87 | 0.212 | #1855 | 0.002 | ||
| 1920 | #76 | 0.225 | #1430 | 0.003 | ||
| 1910 | #84 | 0.220 | #1373 | 0.003 | ||
| 1900 | #84 | 0.195 | #1358 | 0.003 | ||
| 1890 | #88 | 0.171 | #1418 | 0.002 | ||
| 1880 | #101 | 0.125 | - | - | ||
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