Popularity in the United States (by decade)
Numbers
| Kirby (masculine) | Kirby (feminine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | - | - | - | - | ||
| 2010 | - | - | - | - | ||
| 2000 | - | - | - | - | ||
| 1990 | #928 | 0.007 | #1476 | 0.006 | ||
| 1980 | #784 | 0.007 | #1045 | 0.008 | ||
| 1970 | #657 | 0.009 | - | - | ||
| 1960 | #512 | 0.012 | - | - | ||
| 1950 | #426 | 0.015 | - | - | ||
| 1940 | #514 | 0.010 | - | - | ||
| 1930 | #723 | 0.007 | - | - | ||
| 1920 | #858 | 0.005 | - | - | ||
| 1910 | #864 | 0.006 | - | - | ||
| 1900 | #867 | 0.006 | - | - | ||
| 1890 | #705 | 0.008 | - | - | ||
| 1880 | #812 | 0.005 | - | - | ||
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