Popularity in the United States (by decade)
Numbers
| Hilary (masculine) | Hilary (feminine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | - | - | - | - | ||
| 2010 | - | - | - | - | ||
| 2000 | - | - | #1537 | 0.007 | ||
| 1990 | - | - | #543 | 0.023 | ||
| 1980 | - | - | #305 | 0.045 | ||
| 1970 | - | - | #424 | 0.030 | ||
| 1960 | #1996 | 0.001 | #652 | 0.013 | ||
| 1950 | #1351 | 0.002 | #858 | 0.007 | ||
| 1940 | #1257 | 0.002 | #1283 | 0.003 | ||
| 1930 | #1184 | 0.003 | - | - | ||
| 1920 | #1071 | 0.004 | - | - | ||
| 1910 | #1043 | 0.004 | - | - | ||
| 1900 | #1287 | 0.002 | - | - | ||
| 1890 | #1251 | 0.002 | - | - | ||
| 1880 | #1156 | 0.002 | - | - | ||
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