Popularity in the United States (by decade)
Numbers
| Lois (feminine) | Lois (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | #1780 | 0.006 | - | - | ||
| 2010 | #1957 | 0.005 | - | - | ||
| 2000 | - | - | - | - | ||
| 1990 | #1661 | 0.005 | - | - | ||
| 1980 | #1076 | 0.008 | - | - | ||
| 1970 | #588 | 0.018 | - | - | ||
| 1960 | #234 | 0.070 | - | - | ||
| 1950 | #117 | 0.183 | - | - | ||
| 1940 | #49 | 0.382 | #1305 | 0.002 | ||
| 1930 | #21 | 0.731 | #786 | 0.006 | ||
| 1920 | #22 | 0.711 | #794 | 0.006 | ||
| 1910 | #49 | 0.449 | #748 | 0.007 | ||
| 1900 | #89 | 0.248 | #751 | 0.008 | ||
| 1890 | #135 | 0.137 | #1123 | 0.003 | ||
| 1880 | #192 | 0.068 | - | - | ||
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