Illa is a rare variant of Ila that peaked in 1926 and has since faded.
Illa is a girl name. In 2025 it ranked #9,711 for girl births in the United States (and #16,473 across all names), given to 10 babies. Illa first appears in 1898 and peaked in 1926 (58 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 10 | 10 | #9,711 |
| 2024 | 8 | 8 | #11,498 |
| 2023 | 15 | 15 | #7,404 |
| 2022 | 22 | 22 | #5,702 |
| 2021 | 9 | 9 | #10,601 |
| 2020 | 13 | 13 | #8,144 |
| 2019 | 14 | 14 | #7,890 |
| 2018 | 14 | 14 | #7,916 |
| 2017 | 17 | 17 | #6,916 |
| 2016 | 13 | 13 | #8,580 |
| 2015 | 11 | 11 | #9,732 |
| 2014 | 11 | 11 | #9,775 |
| 2013 | 8 | 8 | #12,432 |
| 2011 | 7 | 7 | #13,902 |
| 2010 | 9 | 9 | #11,629 |
| 2009 | 5 | 5 | #18,364 |
| 2007 | 7 | 7 | #14,480 |
| 2003 | 5 | 5 | #16,701 |
| 1984 | 7 | — | #8,480 |
| 1969 | 9 | — | #5,185 |
| 1965 | 5 | — | #6,894 |
| 1963 | 9 | — | #4,669 |
| 1962 | 12 | — | #3,876 |
| 1961 | 5 | — | #6,947 |
| 1959 | 9 | — | #4,430 |
| 1958 | 6 | — | #5,679 |
| 1957 | 8 | — | #4,681 |
| 1956 | 8 | — | #4,606 |
| 1955 | 11 | — | #3,649 |
| 1954 | 15 | — | #2,936 |
| 1953 | 12 | — | #3,350 |
| 1952 | 14 | — | #2,971 |
| 1951 | 20 | — | #2,274 |
| 1950 | 15 | — | #2,709 |
| 1949 | 18 | — | #2,366 |
| 1948 | 23 | — | #2,034 |
| 1947 | 24 | — | #2,018 |
| 1946 | 24 | — | #1,882 |
| 1945 | 17 | — | #2,099 |
| 1944 | 28 | — | #1,558 |
| 1943 | 26 | — | #1,681 |
| 1942 | 24 | — | #1,728 |
| 1941 | 27 | — | #1,514 |
| 1940 | 37 | — | #1,208 |
| 1939 | 34 | — | #1,277 |
| 1938 | 43 | — | #1,103 |
| 1937 | 31 | — | #1,316 |
| 1936 | 27 | — | #1,427 |
| 1935 | 46 | — | #1,025 |
| 1934 | 39 | — | #1,138 |
| 1933 | 46 | — | #1,030 |
| 1932 | 45 | — | #1,060 |
| 1931 | 43 | — | #1,082 |
| 1930 | 48 | — | #1,065 |
| 1929 | 50 | — | #1,036 |
| 1928 | 43 | — | #1,169 |
| 1927 | 57 | — | #1,013 |
| 1926 | 58 | — | #983 |
| 1925 | 47 | — | #1,127 |
| 1924 | 46 | — | #1,157 |
| 1923 | 31 | — | #1,474 |
| 1922 | 44 | — | #1,164 |
| 1921 | 44 | — | #1,158 |
| 1920 | 30 | — | #1,487 |
| 1919 | 40 | — | #1,182 |
| 1918 | 37 | — | #1,247 |
| 1917 | 32 | — | #1,293 |
| 1916 | 40 | — | #1,119 |
| 1915 | 44 | — | #1,005 |
| 1914 | 23 | — | #1,319 |
| 1913 | 22 | — | #1,197 |
| 1912 | 14 | — | #1,505 |
| 1911 | 16 | — | #1,138 |
| 1910 | 13 | — | #1,291 |
| 1909 | 11 | — | #1,328 |
| 1908 | 6 | — | #1,963 |
| 1907 | 8 | — | #1,566 |
| 1906 | 11 | — | #1,188 |
| 1905 | 9 | — | #1,354 |
| 1902 | 6 | — | #1,689 |
| 1898 | 5 | — | #1,814 |