The baby name Flo appears in baby name data for the United States from 1912 to 1959. It was most popular in 1917 with 41 babies given the name.
In the later years of this period, Flo has become less common than it once was.
| Year | Count |
|---|---|
| 1912 | 5 |
| 1914 | 7 |
| 1915 | 18 |
| 1916 | 20 |
| 1917 | 41 |
| 1918 | 19 |
| 1919 | 14 |
| 1920 | 32 |
| 1921 | 17 |
| 1922 | 10 |
| 1923 | 5 |
| 1925 | 16 |
| 1926 | 7 |
| 1927 | 26 |
| 1928 | 29 |
| 1929 | 18 |
| 1930 | 21 |
| 1932 | 20 |
| 1933 | 10 |
| 1934 | 12 |
| 1935 | 16 |
| 1936 | 7 |
| 1937 | 6 |
| 1938 | 10 |
| 1939 | 10 |
| 1943 | 5 |
| 1944 | 5 |
| 1959 | 5 |