Popularity in the United States (by decade)
Numbers
| Jeffery (masculine) | Jeffery (feminine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | #1137 | 0.010 | - | - | ||
| 2010 | #700 | 0.017 | - | - | ||
| 2000 | #417 | 0.030 | - | - | ||
| 1990 | #205 | 0.071 | - | - | ||
| 1980 | #102 | 0.154 | - | - | ||
| 1970 | #67 | 0.261 | - | - | ||
| 1960 | #46 | 0.405 | #1738 | 0.002 | ||
| 1950 | #86 | 0.224 | - | - | ||
| 1940 | #288 | 0.031 | - | - | ||
| 1930 | #1255 | 0.003 | - | - | ||
| 1920 | #1660 | 0.002 | - | - | ||
| 1910 | #1765 | 0.002 | - | - | ||
| 1900 | #1721 | 0.001 | - | - | ||
| 1890 | - | - | - | - | ||
| 1880 | - | - | - | - | ||
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