Rella is a rare variant of Reilly that peaked in 1921 and has since faded.
Rella is a girl name. In 2025 it ranked #8,752 for girl births in the United States (and #14,923 across all names), given to 12 babies. Rella first appears in 1880 and peaked in 1921 (26 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 12 | 12 | #8,752 |
| 2024 | 6 | 6 | #14,909 |
| 2022 | 8 | 8 | #12,010 |
| 2021 | 9 | 9 | #10,968 |
| 2020 | 7 | 7 | #13,173 |
| 2019 | 7 | 7 | #13,504 |
| 2018 | 6 | 6 | #15,260 |
| 2016 | 9 | 9 | #11,590 |
| 2015 | 5 | 5 | #18,551 |
| 2014 | 10 | 10 | #10,778 |
| 2013 | 5 | 5 | #18,711 |
| 2012 | 6 | 6 | #16,439 |
| 2006 | 6 | 6 | #16,674 |
| 1995 | 5 | — | #15,187 |
| 1986 | 6 | — | #10,543 |
| 1981 | 5 | — | #11,689 |
| 1972 | 6 | — | #7,991 |
| 1967 | 5 | — | #7,584 |
| 1966 | 6 | — | #6,388 |
| 1964 | 8 | — | #5,356 |
| 1963 | 7 | — | #5,754 |
| 1961 | 7 | — | #5,714 |
| 1960 | 13 | — | #3,646 |
| 1959 | 9 | — | #4,555 |
| 1958 | 9 | — | #4,436 |
| 1957 | 11 | — | #3,876 |
| 1956 | 7 | — | #5,214 |
| 1955 | 17 | — | #2,815 |
| 1954 | 11 | — | #3,663 |
| 1953 | 13 | — | #3,234 |
| 1952 | 12 | — | #3,346 |
| 1951 | 18 | — | #2,456 |
| 1950 | 13 | — | #3,021 |
| 1949 | 14 | — | #2,823 |
| 1948 | 12 | — | #3,101 |
| 1947 | 12 | — | #3,195 |
| 1946 | 16 | — | #2,465 |
| 1945 | 18 | — | #2,044 |
| 1944 | 8 | — | #3,623 |
| 1943 | 12 | — | #2,820 |
| 1942 | 25 | — | #1,697 |
| 1941 | 17 | — | #2,079 |
| 1940 | 17 | — | #2,020 |
| 1939 | 19 | — | #1,863 |
| 1938 | 23 | — | #1,633 |
| 1937 | 18 | — | #1,902 |
| 1936 | 14 | — | #2,242 |
| 1935 | 21 | — | #1,711 |
| 1934 | 12 | — | #2,542 |
| 1933 | 12 | — | #2,517 |
| 1932 | 23 | — | #1,620 |
| 1931 | 23 | — | #1,628 |
| 1930 | 26 | — | #1,562 |
| 1929 | 19 | — | #1,943 |
| 1928 | 22 | — | #1,825 |
| 1927 | 25 | — | #1,716 |
| 1926 | 26 | — | #1,659 |
| 1925 | 23 | — | #1,838 |
| 1924 | 26 | — | #1,708 |
| 1923 | 24 | — | #1,770 |
| 1922 | 20 | — | #2,011 |
| 1921 | 26 | — | #1,716 |
| 1920 | 25 | — | #1,696 |
| 1919 | 23 | — | #1,734 |
| 1918 | 19 | — | #2,018 |
| 1917 | 24 | — | #1,598 |
| 1916 | 22 | — | #1,674 |
| 1915 | 23 | — | #1,564 |
| 1914 | 19 | — | #1,527 |
| 1913 | 18 | — | #1,395 |
| 1912 | 10 | — | #1,955 |
| 1911 | 9 | — | #1,770 |
| 1910 | 12 | — | #1,410 |
| 1909 | 11 | — | #1,355 |
| 1908 | 13 | — | #1,188 |
| 1907 | 8 | — | #1,614 |
| 1906 | 11 | — | #1,214 |
| 1905 | 7 | — | #1,662 |
| 1904 | 8 | — | #1,458 |
| 1903 | 7 | — | #1,559 |
| 1902 | 10 | — | #1,199 |
| 1901 | 11 | — | #1,055 |
| 1900 | 14 | — | #1,048 |
| 1899 | 10 | — | #1,085 |
| 1898 | 13 | — | #1,005 |
| 1897 | 15 | — | #863 |
| 1896 | 7 | — | #1,395 |
| 1895 | 19 | — | #739 |
| 1894 | 12 | — | #944 |
| 1893 | 10 | — | #1,009 |
| 1892 | 15 | — | #788 |
| 1891 | 7 | — | #1,190 |
| 1890 | 7 | — | #1,180 |
| 1889 | 5 | — | #1,451 |
| 1888 | 9 | — | #946 |
| 1886 | 7 | — | #977 |
| 1885 | 10 | — | #732 |
| 1884 | 10 | — | #722 |
| 1883 | 6 | — | #906 |
| 1882 | 5 | — | #1,007 |
| 1881 | 10 | — | #575 |
| 1880 | 7 | — | #727 |