Popularity in the United States (by decade)
Numbers
| Jo (feminine) | Jo (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | - | - | - | - | ||
| 2010 | - | - | - | - | ||
| 2000 | - | - | - | - | ||
| 1990 | - | - | - | - | ||
| 1980 | #841 | 0.011 | - | - | ||
| 1970 | #380 | 0.036 | - | - | ||
| 1960 | #181 | 0.107 | #1784 | 0.001 | ||
| 1950 | #68 | 0.324 | #1459 | 0.001 | ||
| 1940 | #60 | 0.325 | #1349 | 0.002 | ||
| 1930 | #90 | 0.259 | #1291 | 0.003 | ||
| 1920 | #254 | 0.056 | - | - | ||
| 1910 | #532 | 0.014 | - | - | ||
| 1900 | #640 | 0.010 | - | - | ||
| 1890 | #845 | 0.006 | - | - | ||
| 1880 | #824 | 0.005 | - | - | ||
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