The baby name Thea appears in baby name data for the United States from 1920 to 2024. It was most popular in 2017 with 1,546 babies given the name.
In the later years of this period, Thea has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1920 | 12 |
| 1927 | 24 |
| 1928 | 14 |
| 1929 | 12 |
| 1930 | 12 |
| 1936 | 16 |
| 1937 | 7 |
| 1939 | 9 |
| 1940 | 7 |
| 1941 | 22 |
| 1942 | 13 |
| 1943 | 10 |
| 1944 | 10 |
| 1945 | 5 |
| 1946 | 13 |
| 1947 | 15 |
| 1948 | 19 |
| 1949 | 7 |
| 1950 | 64 |
| 1951 | 28 |
| 1952 | 80 |
| 1953 | 46 |
| 1954 | 19 |
| 1955 | 87 |
| 1956 | 27 |
| 1957 | 83 |
| 1958 | 54 |
| 1959 | 53 |
| 1960 | 46 |
| 1961 | 75 |
| 1962 | 67 |
| 1963 | 53 |
| 1964 | 47 |
| 1965 | 68 |
| 1966 | 46 |
| 1967 | 35 |
| 1968 | 66 |
| 1969 | 48 |
| 1970 | 41 |
| 1971 | 43 |
| 1972 | 40 |
| 1973 | 40 |
| 1974 | 28 |
| 1975 | 53 |
| 1976 | 38 |
| 1977 | 50 |
| 1978 | 56 |
| 1979 | 66 |
| 1980 | 76 |
| 1981 | 40 |
| 1982 | 47 |
| 1983 | 18 |
| 1984 | 8 |
| 1985 | 13 |
| 1986 | 17 |
| 1987 | 23 |
| 1988 | 49 |
| 1989 | 40 |
| 1990 | 96 |
| 1991 | 59 |
| 1992 | 53 |
| 1993 | 51 |
| 1994 | 5 |
| 1995 | 21 |
| 1996 | 9 |
| 1997 | 9 |
| 1998 | 5 |
| 1999 | 16 |
| 2000 | 28 |
| 2001 | 65 |
| 2002 | 37 |
| 2003 | 104 |
| 2004 | 110 |
| 2005 | 81 |
| 2006 | 60 |
| 2007 | 65 |
| 2008 | 90 |
| 2009 | 94 |
| 2010 | 75 |
| 2011 | 76 |
| 2012 | 130 |
| 2013 | 155 |
| 2014 | 348 |
| 2015 | 826 |
| 2016 | 1,380 |
| 2017 | 1,546 |
| 2018 | 1,405 |
| 2019 | 1,410 |
| 2020 | 1,264 |
| 2021 | 1,278 |
| 2022 | 1,340 |
| 2023 | 1,204 |
| 2024 | 1,038 |