Thea is an established girls' name that peaked in 2018 and remains in steady use.
Thea is predominantly a girl name. In 2025 it ranked #353 for girl births in the United States (and #733 across all names), given to 867 babies. Thea was first reported in SSA data in 1880 and peaked in 2018 (1,209 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 867 | 867 | #353 | — |
| 2024 | 897 | 897 | #349 | — |
| 2023 | 974 | 974 | #321 | — |
| 2022 | 1,066 | 1,066 | #300 | — |
| 2021 | 1,033 | 1,033 | #314 | — |
| 2020 | 1,071 | 1,071 | #303 | — |
| 2019 | 1,142 | 1,142 | #293 | — |
| 2018 | 1,209 | 1,209 | #273 | — |
| 2017 | 1,193 | 1,193 | #268 | — |
| 2016 | 1,121 | 1,121 | #291 | — |
| 2015 | 688 | 688 | #464 | — |
| 2014 | 364 | 364 | #771 | — |
| 2013 | 213 | 213 | #1,134 | — |
| 2012 | 187 | 187 | #1,283 | — |
| 2011 | 146 | 146 | #1,520 | — |
| 2010 | 145 | 145 | #1,544 | — |
| 2009 | 161 | 161 | #1,449 | — |
| 2008 | 148 | 148 | #1,560 | — |
| 2007 | 132 | 132 | #1,678 | — |
| 2006 | 133 | 133 | #1,613 | — |
| 2005 | 130 | 130 | #1,573 | — |
| 2004 | 150 | 150 | #1,396 | — |
| 2003 | 149 | 149 | #1,364 | — |
| 2002 | 124 | 124 | #1,532 | — |
| 2001 | 124 | 124 | #1,514 | — |
| 2000 | 111 | 111 | #1,600 | — |
| 1999 | 90 | 90 | #1,784 | — |
| 1998 | 75 | 75 | #2,010 | — |
| 1997 | 88 | — | #1,748 | — |
| 1996 | 97 | — | #1,608 | — |
| 1995 | 67 | — | #2,048 | — |
| 1994 | 61 | — | #2,206 | — |
| 1993 | 112 | — | #1,446 | — |
| 1992 | 98 | — | #1,587 | — |
| 1991 | 126 | — | #1,321 | — |
| 1990 | 138 | — | #1,223 | — |
| 1989 | 126 | — | #1,258 | — |
| 1988 | 104 | — | #1,375 | — |
| 1987 | 75 | — | #1,646 | — |
| 1986 | 78 | — | #1,561 | — |
| 1985 | 81 | — | #1,521 | — |
| 1984 | 92 | — | #1,330 | — |
| 1983 | 78 | — | #1,483 | — |
| 1982 | 123 | — | #1,148 | — |
| 1981 | 133 | — | #1,067 | — |
| 1980 | 132 | — | #1,076 | — |
| 1979 | 114 | — | #1,168 | — |
| 1978 | 114 | — | #1,136 | — |
| 1977 | 101 | — | #1,213 | — |
| 1976 | 97 | — | #1,180 | — |
| 1975 | 94 | — | #1,227 | — |
| 1974 | 103 | — | #1,132 | — |
| 1973 | 85 | — | #1,238 | — |
| 1972 | 87 | — | #1,225 | — |
| 1971 | 112 | — | #1,083 | — |
| 1970 | 101 | — | #1,153 | — |
| 1969 | 95 | — | #1,147 | — |
| 1968 | 103 | — | #1,027 | — |
| 1967 | 96 | — | #1,067 | — |
| 1966 | 101 | — | #1,041 | — |
| 1965 | 119 | — | #938 | — |
| 1964 | 119 | — | #976 | — |
| 1963 | 117 | — | #989 | — |
| 1962 | 129 | — | #938 | — |
| 1961 | 114 | — | #1,022 | — |
| 1960 | 106 | — | #1,046 | — |
| 1959 | 108 | — | #1,021 | — |
| 1958 | 99 | — | #1,057 | — |
| 1957 | 124 | — | #923 | — |
| 1956 | 93 | — | #1,064 | — |
| 1955 | 135 | — | #838 | — |
| 1954 | 98 | — | #990 | — |
| 1953 | 98 | — | #966 | — |
| 1952 | 102 | — | #920 | — |
| 1951 | 85 | — | #1,013 | — |
| 1950 | 85 | — | #996 | — |
| 1949 | 50 | — | #1,300 | — |
| 1948 | 56 | — | #1,220 | — |
| 1947 | 51 | — | #1,288 | — |
| 1946 | 53 | — | #1,191 | — |
| 1945 | 32 | — | #1,447 | — |
| 1944 | 32 | — | #1,453 | — |
| 1943 | 39 | — | #1,321 | — |
| 1942 | 34 | — | #1,410 | — |
| 1941 | 45 | — | #1,115 | — |
| 1940 | 39 | — | #1,183 | — |
| 1939 | 30 | — | #1,376 | — |
| 1938 | 18 | — | #1,939 | — |
| 1937 | 23 | — | #1,625 | — |
| 1936 | 23 | — | #1,588 | — |
| 1935 | 22 | — | #1,657 | — |
| 1934 | 17 | — | #1,993 | — |
| 1933 | 10 | — | #2,848 | — |
| 1932 | 20 | — | #1,814 | — |
| 1931 | 21 | — | #1,738 | — |
| 1930 | 23 | — | #1,701 | — |
| 1929 | 22 | — | #1,756 | — |
| 1928 | 37 | — | #1,270 | — |
| 1927 | 40 | — | #1,256 | — |
| 1926 | 21 | — | #1,925 | — |
| 1925 | 19 | — | #2,112 | — |
| 1924 | 30 | — | #1,762 | #4,891 |
| 1923 | 16 | — | #2,357 | — |
| 1922 | 21 | — | #1,951 | — |
| 1921 | 28 | — | #1,617 | — |
| 1920 | 25 | — | #1,702 | — |
| 1919 | 16 | — | #2,249 | — |
| 1918 | 14 | — | #2,503 | — |
| 1917 | 17 | — | #2,089 | — |
| 1916 | 21 | — | #1,735 | — |
| 1915 | 17 | — | #1,953 | — |
| 1914 | 19 | — | #1,532 | — |
| 1913 | 15 | — | #1,594 | — |
| 1912 | 20 | — | #1,215 | — |
| 1911 | 10 | — | #1,644 | — |
| 1910 | 8 | — | #1,913 | — |
| 1909 | 9 | — | #1,591 | — |
| 1908 | 10 | — | #1,431 | — |
| 1907 | 9 | — | #1,498 | — |
| 1906 | 7 | — | #1,701 | — |
| 1905 | 6 | — | #1,902 | — |
| 1904 | 10 | — | #1,242 | — |
| 1902 | 14 | — | #965 | — |
| 1901 | 15 | — | #878 | — |
| 1900 | 7 | — | #1,713 | — |
| 1899 | 10 | — | #1,091 | — |
| 1897 | 11 | — | #1,027 | — |
| 1896 | 11 | — | #1,040 | — |
| 1895 | 26 | — | #606 | — |
| 1894 | 10 | — | #1,053 | — |
| 1893 | 8 | — | #1,162 | — |
| 1892 | 12 | — | #903 | — |
| 1891 | 9 | — | #998 | — |
| 1890 | 8 | — | #1,087 | — |
| 1889 | 13 | — | #752 | — |
| 1888 | 14 | — | #719 | — |
| 1887 | 6 | — | #1,138 | — |
| 1886 | 10 | — | #774 | — |
| 1885 | 9 | — | #789 | — |
| 1884 | 10 | — | #724 | — |
| 1883 | 6 | — | #914 | — |
| 1882 | 7 | — | #805 | — |
| 1881 | 5 | — | #931 | — |
| 1880 | 6 | — | #827 | — |