Willo is a girl name. In 2025 it ranked #17240 for girl births in the United States, given to 9 babies. Willo first appears in the data in 1911 and reached its peak in 1924 (23 births). The chart below shows how the name has risen and fallen over time.
| Year | U.S. births | Rank |
|---|---|---|
| 2025 | 9 | #17,240 |
| 2023 | 8 | #18,724 |
| 2022 | 6 | #22,599 |
| 2021 | 11 | #15,174 |
| 2020 | 5 | #25,031 |
| 2018 | 13 | #13,834 |
| 2017 | 8 | #19,203 |
| 2016 | 13 | #14,033 |
| 2015 | 9 | #17,875 |
| 2014 | 6 | #23,670 |
| 2013 | 9 | #18,100 |
| 2012 | 9 | #18,377 |
| 2011 | 7 | #21,626 |
| 2009 | 7 | #22,200 |
| 2008 | 5 | #28,146 |
| 2007 | 9 | #18,797 |
| 2004 | 5 | #25,488 |
| 2003 | 6 | #21,995 |
| 2001 | 6 | #21,296 |
| 1963 | 7 | #8,038 |
| 1958 | 8 | #7,035 |
| 1954 | 6 | #7,981 |
| 1953 | 6 | #7,862 |
| 1952 | 5 | #8,637 |
| 1950 | 5 | #8,357 |
| 1949 | 7 | #6,776 |
| 1948 | 7 | #6,757 |
| 1947 | 10 | #5,620 |
| 1946 | 8 | #5,951 |
| 1943 | 10 | #5,109 |
| 1942 | 11 | #4,788 |
| 1940 | 10 | #4,787 |
| 1939 | 12 | #4,240 |
| 1938 | 19 | #3,232 |
| 1937 | 9 | #5,075 |
| 1936 | 15 | #3,669 |
| 1935 | 15 | #3,753 |
| 1934 | 21 | #3,020 |
| 1933 | 14 | #3,869 |
| 1932 | 23 | #2,932 |
| 1931 | 17 | #3,519 |
| 1930 | 21 | #3,181 |
| 1929 | 16 | #3,827 |
| 1928 | 16 | #3,942 |
| 1927 | 15 | #4,220 |
| 1926 | 14 | #4,405 |
| 1925 | 13 | #4,697 |
| 1924 | 23 | #3,322 |
| 1923 | 6 | #7,626 |
| 1922 | 13 | #4,768 |
| 1921 | 19 | #3,774 |
| 1920 | 12 | #4,959 |
| 1919 | 5 | #8,316 |
| 1918 | 9 | #5,802 |
| 1917 | 15 | #4,065 |
| 1916 | 8 | #5,847 |
| 1915 | 8 | #5,668 |
| 1914 | 10 | #4,267 |
| 1913 | 5 | #5,784 |
| 1912 | 6 | #4,795 |
| 1911 | 7 | #3,392 |