Popularity in the United States (by decade)
Numbers
| Thelma (feminine) | Thelma (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | - | - | - | - | ||
| 2010 | - | - | - | - | ||
| 2000 | - | - | - | - | ||
| 1990 | - | - | - | - | ||
| 1980 | #1215 | 0.006 | - | - | ||
| 1970 | #717 | 0.013 | - | - | ||
| 1960 | #392 | 0.031 | - | - | ||
| 1950 | #238 | 0.060 | - | - | ||
| 1940 | #136 | 0.136 | - | - | ||
| 1930 | #63 | 0.328 | #1296 | 0.003 | ||
| 1920 | #34 | 0.554 | #1240 | 0.003 | ||
| 1910 | #28 | 0.670 | #1096 | 0.004 | ||
| 1900 | #41 | 0.588 | #919 | 0.005 | ||
| 1890 | #169 | 0.101 | #1525 | 0.001 | ||
| 1880 | #784 | 0.005 | - | - | ||
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