The baby name Jo appears in baby name data for the United States from 1910 to 2024. It was most popular in 1954 with 9,846 babies given the name.
In the later years of this period, Jo has become less common than it once was.
| Year | Count |
|---|---|
| 1910 | 13 |
| 1911 | 24 |
| 1912 | 43 |
| 1913 | 59 |
| 1914 | 110 |
| 1915 | 125 |
| 1916 | 170 |
| 1917 | 124 |
| 1918 | 233 |
| 1919 | 237 |
| 1920 | 215 |
| 1920 | 7 |
| 1921 | 245 |
| 1922 | 275 |
| 1923 | 410 |
| 1924 | 612 |
| 1925 | 759 |
| 1926 | 1,043 |
| 1927 | 1,332 |
| 1928 | 1,755 |
| 1928 | 5 |
| 1929 | 2,331 |
| 1929 | 5 |
| 1930 | 2,727 |
| 1930 | 6 |
| 1931 | 3,122 |
| 1932 | 3,610 |
| 1933 | 3,919 |
| 1934 | 4,265 |
| 1935 | 5,468 |
| 1936 | 4,379 |
| 1936 | 10 |
| 1937 | 4,248 |
| 1938 | 4,108 |
| 1939 | 4,069 |
| 1940 | 4,261 |
| 1941 | 4,060 |
| 1941 | 5 |
| 1942 | 4,347 |
| 1943 | 5,922 |
| 1944 | 4,441 |
| 1945 | 4,540 |
| 1946 | 6,292 |
| 1947 | 7,750 |
| 1948 | 6,878 |
| 1949 | 6,692 |
| 1950 | 6,838 |
| 1951 | 7,679 |
| 1952 | 9,264 |
| 1953 | 9,692 |
| 1954 | 9,846 |
| 1955 | 9,135 |
| 1956 | 8,707 |
| 1957 | 7,451 |
| 1958 | 6,749 |
| 1959 | 5,257 |
| 1960 | 4,553 |
| 1961 | 3,701 |
| 1962 | 3,413 |
| 1962 | 10 |
| 1963 | 2,318 |
| 1964 | 2,326 |
| 1964 | 12 |
| 1965 | 2,015 |
| 1966 | 1,719 |
| 1967 | 1,536 |
| 1967 | 10 |
| 1968 | 1,620 |
| 1969 | 1,368 |
| 1969 | 5 |
| 1970 | 1,316 |
| 1971 | 1,084 |
| 1972 | 804 |
| 1973 | 734 |
| 1974 | 650 |
| 1975 | 588 |
| 1976 | 411 |
| 1977 | 393 |
| 1978 | 322 |
| 1979 | 296 |
| 1980 | 349 |
| 1981 | 319 |
| 1982 | 221 |
| 1982 | 5 |
| 1983 | 167 |
| 1984 | 177 |
| 1985 | 181 |
| 1986 | 68 |
| 1987 | 112 |
| 1988 | 96 |
| 1989 | 20 |
| 1990 | 11 |
| 1992 | 26 |
| 1995 | 23 |
| 1996 | 15 |
| 1997 | 17 |
| 1998 | 24 |
| 2003 | 14 |
| 2004 | 18 |
| 2006 | 6 |
| 2011 | 5 |
| 2015 | 7 |
| 2017 | 5 |
| 2020 | 6 |
| 2021 | 5 |
| 2022 | 7 |
| 2023 | 5 |
| 2024 | 8 |