Popularity in the United States (by decade)
Numbers
| Marlo (feminine) | Marlo (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | #1940 | 0.006 | #1840 | 0.005 | ||
| 2010 | - | - | - | - | ||
| 2000 | - | - | - | - | ||
| 1990 | - | - | - | - | ||
| 1980 | - | - | #1624 | 0.002 | ||
| 1970 | #638 | 0.015 | #1038 | 0.004 | ||
| 1960 | #808 | 0.008 | #1561 | 0.001 | ||
| 1950 | - | - | #1545 | 0.001 | ||
| 1940 | - | - | - | - | ||
| 1930 | - | - | #1717 | 0.002 | ||
| 1920 | - | - | - | - | ||
| 1910 | - | - | - | - | ||
| 1900 | - | - | - | - | ||
| 1890 | - | - | - | - | ||
| 1880 | - | - | - | - | ||
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