Popularity in the United States (by decade)
Numbers
| Thomas (feminine) | Thomas (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | - | - | #45 | 0.353 | ||
| 2010 | - | - | #49 | 0.348 | ||
| 2000 | - | - | #37 | 0.480 | ||
| 1990 | - | - | #26 | 0.713 | ||
| 1980 | #1226 | 0.006 | #24 | 0.924 | ||
| 1970 | #1107 | 0.007 | #20 | 1.092 | ||
| 1960 | #978 | 0.006 | #9 | 1.668 | ||
| 1950 | #1031 | 0.005 | #8 | 2.214 | ||
| 1940 | #818 | 0.006 | #8 | 2.314 | ||
| 1930 | #751 | 0.008 | #9 | 1.694 | ||
| 1920 | #747 | 0.008 | #11 | 1.417 | ||
| 1910 | #900 | 0.005 | #10 | 1.319 | ||
| 1900 | #972 | 0.005 | #10 | 1.484 | ||
| 1890 | #910 | 0.005 | #12 | 1.715 | ||
| 1880 | #723 | 0.007 | #10 | 2.018 | ||
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