Popularity in the United States (by decade)
Numbers
| Kelly (feminine) | Kelly (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | #792 | 0.020 | #1568 | 0.006 | ||
| 2010 | #438 | 0.037 | #1525 | 0.005 | ||
| 2000 | #158 | 0.106 | #1085 | 0.007 | ||
| 1990 | #60 | 0.284 | #509 | 0.020 | ||
| 1980 | #29 | 0.593 | #241 | 0.051 | ||
| 1970 | #14 | 0.811 | #153 | 0.101 | ||
| 1960 | #30 | 0.677 | #123 | 0.143 | ||
| 1950 | #205 | 0.078 | #200 | 0.064 | ||
| 1940 | #1105 | 0.004 | #372 | 0.019 | ||
| 1930 | - | - | #511 | 0.012 | ||
| 1920 | - | - | #546 | 0.011 | ||
| 1910 | - | - | #521 | 0.013 | ||
| 1900 | - | - | #508 | 0.014 | ||
| 1890 | - | - | #530 | 0.012 | ||
| 1880 | - | - | #552 | 0.010 | ||
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