Popularity in the United States (by decade)
Numbers
| Lennon (feminine) | Lennon (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | #260 | 0.066 | #684 | 0.021 | ||
| 2010 | #637 | 0.023 | #704 | 0.017 | ||
| 2000 | - | - | #1266 | 0.006 | ||
| 1990 | - | - | - | - | ||
| 1980 | - | - | - | - | ||
| 1970 | - | - | - | - | ||
| 1960 | - | - | - | - | ||
| 1950 | - | - | - | - | ||
| 1940 | - | - | - | - | ||
| 1930 | - | - | - | - | ||
| 1920 | - | - | - | - | ||
| 1910 | - | - | - | - | ||
| 1900 | - | - | - | - | ||
| 1890 | - | - | - | - | ||
| 1880 | - | - | - | - | ||
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