Ilo is a rare variant of Ila that peaked in 1921 and has grown less common since.
Ilo is predominantly a girl name. It last appears in U.S. records in 2025. Ilo was first reported in SSA data in 1888 and peaked in 1921 (33 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 11 | 11 | — | #7,361 |
| 2024 | 19 | 19 | #12,674 | #6,992 |
| 2022 | 8 | 8 | — | #9,316 |
| 2021 | 5 | 5 | — | #12,851 |
| 2020 | 6 | 6 | #14,111 | — |
| 2018 | 7 | 7 | — | #10,067 |
| 2014 | 6 | 6 | #15,336 | — |
| 2011 | 9 | 9 | — | #8,321 |
| 1947 | 5 | — | #5,640 | — |
| 1946 | 5 | — | #5,240 | — |
| 1944 | 5 | — | #4,843 | — |
| 1941 | 5 | — | #4,679 | — |
| 1938 | 6 | — | #4,050 | — |
| 1937 | 8 | — | #3,271 | — |
| 1936 | 8 | — | #3,230 | — |
| 1935 | 9 | — | #3,024 | — |
| 1934 | 15 | — | #2,129 | — |
| 1933 | 18 | — | #2,321 | #3,891 |
| 1932 | 14 | — | #2,298 | — |
| 1931 | 13 | — | #2,357 | — |
| 1930 | 17 | — | #2,058 | — |
| 1929 | 17 | — | #2,047 | — |
| 1928 | 20 | — | #1,932 | — |
| 1927 | 21 | — | #1,912 | — |
| 1926 | 12 | — | #2,786 | — |
| 1925 | 22 | — | #1,864 | — |
| 1924 | 20 | — | #2,030 | — |
| 1923 | 19 | — | #2,053 | — |
| 1922 | 23 | — | #1,811 | — |
| 1921 | 33 | — | #1,419 | — |
| 1920 | 25 | — | #1,679 | — |
| 1919 | 31 | — | #1,581 | #4,464 |
| 1918 | 24 | — | #1,992 | #4,462 |
| 1917 | 27 | — | #1,449 | — |
| 1916 | 20 | — | #1,761 | — |
| 1915 | 26 | — | #1,422 | — |
| 1914 | 25 | — | #1,244 | — |
| 1913 | 15 | — | #1,560 | — |
| 1912 | 16 | — | #1,385 | — |
| 1911 | 8 | — | #1,858 | — |
| 1910 | 9 | — | #1,690 | — |
| 1909 | 15 | — | #1,079 | — |
| 1908 | 11 | — | #1,302 | — |
| 1907 | 10 | — | #1,336 | — |
| 1906 | 8 | — | #1,481 | — |
| 1905 | 5 | — | #2,073 | — |
| 1904 | 10 | — | #1,205 | — |
| 1903 | 9 | — | #1,253 | — |
| 1902 | 7 | — | #1,510 | — |
| 1901 | 8 | — | #1,270 | — |
| 1900 | 9 | — | #1,364 | — |
| 1899 | 15 | — | #856 | — |
| 1898 | 13 | — | #984 | — |
| 1897 | 6 | — | #1,455 | — |
| 1896 | 7 | — | #1,350 | — |
| 1895 | 10 | — | #1,085 | — |
| 1891 | 8 | — | #1,050 | — |
| 1890 | 5 | — | #1,415 | — |
| 1889 | 5 | — | #1,371 | — |
| 1888 | 6 | — | #1,201 | — |