Theadore
Theadore was given to 5 boys in 2025, #13,684 among boys’ names; 4,005 Americans have been recorded with it since 1880 (Social Security Administration, published May 2026).
An estimated 1,350 Americans named Theadore and born in the U.S. are alive in 2026 (34% of everyone recorded); the median is 67 years old and half are between 53 and 76.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Theadore by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Theadore mean?
Wiktionary, English section
Theadore is “a male given name.”
Spelling alteration of Theodore, from Ancient Greek Θεόδωρος (Theódōros).
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Theadore?
#13,684 among boys’ names, 2025
Theadore fell from #9,467 in 2015 to #13,684 in 2025 among boys’ names; its share of boys born fell from 4.2 to 2.9 per million.
91 babies in 1927, the peak
Theadore peaked in 1927, when 91 boys were given it, #676 among boys’ names. The 5 births of 2025 are 5% of that peak.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 5 | #13,684 | under 0.01 |
| 2024 | 7 | #10,807 | under 0.01 |
| 2023 | 5 | #13,973 | under 0.01 |
| 2022 | 6 | #12,156 | under 0.01 |
| 2021 | 8 | #9,600 | under 0.01 |
| 2020 | 5 | #13,843 | under 0.01 |
| 2019 | 5 | #13,926 | under 0.01 |
| 2018 | 5 | #13,886 | under 0.01 |
| 2017 | 8 | #9,592 | under 0.01 |
| 2015 | 8 | #9,467 | under 0.01 |
Every recorded year (125)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2012 | 6 | #12,128 | under 0.01 |
| 2008 | 5 | #14,382 | under 0.01 |
| 2007 | 5 | #14,185 | under 0.01 |
| 2005 | 7 | #10,035 | under 0.01 |
| 2001 | 5 | #12,137 | under 0.01 |
| 2000 | 6 | #10,230 | under 0.01 |
| 1999 | 7 | #8,617 | under 0.01 |
| 1995 | 7 | #7,713 | under 0.01 |
| 1994 | 9 | #6,308 | under 0.01 |
| 1993 | 9 | #6,170 | under 0.01 |
| 1992 | 9 | #6,076 | under 0.01 |
| 1991 | 9 | #5,884 | under 0.01 |
| 1989 | 14 | #3,999 | 0.01 |
| 1988 | 7 | #6,351 | under 0.01 |
| 1987 | 10 | #4,543 | 0.01 |
| 1986 | 5 | #7,714 | under 0.01 |
| 1985 | 10 | #4,303 | 0.01 |
| 1984 | 12 | #3,667 | 0.01 |
| 1983 | 12 | #3,609 | 0.01 |
| 1982 | 8 | #4,952 | under 0.01 |
| 1981 | 19 | #2,565 | 0.01 |
| 1980 | 13 | #3,414 | 0.01 |
| 1979 | 13 | #3,336 | 0.01 |
| 1978 | 16 | #2,786 | 0.01 |
| 1977 | 21 | #2,263 | 0.01 |
| 1976 | 15 | #2,808 | 0.01 |
| 1975 | 9 | #3,922 | 0.01 |
| 1974 | 9 | #3,809 | 0.01 |
| 1973 | 20 | #2,114 | 0.01 |
| 1972 | 19 | #2,152 | 0.01 |
| 1971 | 24 | #1,858 | 0.01 |
| 1970 | 29 | #1,610 | 0.02 |
| 1969 | 29 | #1,524 | 0.02 |
| 1968 | 24 | #1,641 | 0.01 |
| 1967 | 18 | #1,898 | 0.01 |
| 1966 | 32 | #1,366 | 0.02 |
| 1965 | 36 | #1,291 | 0.02 |
| 1964 | 34 | #1,367 | 0.02 |
| 1963 | 31 | #1,421 | 0.02 |
| 1962 | 43 | #1,199 | 0.02 |
| 1961 | 41 | #1,248 | 0.02 |
| 1960 | 35 | #1,356 | 0.02 |
| 1959 | 35 | #1,334 | 0.02 |
| 1958 | 51 | #1,078 | 0.02 |
| 1957 | 45 | #1,161 | 0.02 |
| 1956 | 52 | #1,053 | 0.02 |
| 1955 | 61 | #965 | 0.03 |
| 1954 | 49 | #1,077 | 0.02 |
| 1953 | 68 | #874 | 0.03 |
| 1952 | 63 | #894 | 0.03 |
| 1951 | 58 | #927 | 0.03 |
| 1950 | 54 | #945 | 0.03 |
| 1949 | 47 | #1,025 | 0.03 |
| 1948 | 51 | #987 | 0.03 |
| 1947 | 65 | #868 | 0.04 |
| 1946 | 47 | #1,001 | 0.03 |
| 1945 | 51 | #897 | 0.04 |
| 1944 | 54 | #868 | 0.04 |
| 1943 | 70 | #786 | 0.05 |
| 1942 | 71 | #769 | 0.05 |
| 1941 | 62 | #806 | 0.05 |
| 1940 | 74 | #709 | 0.06 |
| 1939 | 54 | #834 | 0.05 |
| 1938 | 76 | #698 | 0.07 |
| 1937 | 60 | #802 | 0.06 |
| 1936 | 81 | #652 | 0.08 |
| 1935 | 57 | #832 | 0.05 |
| 1934 | 72 | #724 | 0.07 |
| 1933 | 72 | #719 | 0.07 |
| 1932 | 70 | #755 | 0.07 |
| 1931 | 76 | #696 | 0.07 |
| 1930 | 85 | #680 | 0.08 |
| 1929 | 64 | #814 | 0.06 |
| 1928 | 71 | #774 | 0.06 |
| 1927 | 91 | #676 | 0.08 |
| 1926 | 77 | #729 | 0.07 |
| 1925 | 87 | #696 | 0.08 |
| 1924 | 83 | #730 | 0.07 |
| 1923 | 68 | #819 | 0.06 |
| 1922 | 74 | #776 | 0.07 |
| 1921 | 78 | #759 | 0.07 |
| 1920 | 77 | #752 | 0.07 |
| 1919 | 68 | #785 | 0.07 |
| 1918 | 73 | #758 | 0.07 |
| 1917 | 58 | #846 | 0.06 |
| 1916 | 49 | #913 | 0.06 |
| 1915 | 59 | #790 | 0.07 |
| 1914 | 34 | #965 | 0.05 |
| 1913 | 33 | #851 | 0.06 |
| 1912 | 29 | #832 | 0.07 |
| 1911 | 15 | #890 | 0.07 |
| 1910 | 10 | #1,109 | 0.05 |
| 1909 | 20 | #609 | 0.12 |
| 1908 | 15 | #710 | 0.10 |
| 1907 | 16 | #663 | 0.11 |
| 1906 | 8 | #992 | 0.06 |
| 1905 | 17 | #590 | 0.13 |
| 1904 | 15 | #610 | 0.12 |
| 1903 | 11 | #729 | 0.09 |
| 1902 | 12 | #680 | 0.10 |
| 1901 | 10 | #723 | 0.09 |
| 1900 | 13 | #730 | 0.09 |
| 1899 | 5 | #1,190 | 0.05 |
| 1898 | 10 | #737 | 0.08 |
| 1897 | 5 | #1,213 | 0.04 |
| 1896 | 7 | #972 | 0.06 |
| 1894 | 5 | #1,219 | 0.04 |
| 1893 | 6 | #1,019 | 0.05 |
| 1889 | 7 | #871 | 0.06 |
| 1886 | 7 | #838 | 0.06 |
| 1885 | 5 | #1,085 | 0.05 |
| 1884 | 10 | #654 | 0.09 |
| 1883 | 7 | #792 | 0.07 |
| 1882 | 6 | #933 | 0.05 |
| 1880 | 5 | #1,045 | 0.05 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Theadore a boy’s or a girl’s name?
Theadore has been recorded only for boys: SSA lists no girls with the name in 125 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Theadore: the SSA national file counts each sex separately.
How many people are named Theadore, and how old are they?
1,350 alive in 2026, estimated
That is 34% of the 4,005 Americans ever recorded as Theadore. The median Theadore alive today is 67 years old; half are between 53 and 76.
The 2020 Census counted 800 people named Theadore (11 women and girls, 789 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 1,619 born in the U.S. The Census count is 51% below that prediction. Possible reasons: people who give a short form or another name to the Census, and a survival estimate that can run high.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Silent Generation | 1928-1945 | 224 |
| Baby Boomers | 1946-1964 | 601 |
| Generation X | 1965-1980 | 285 |
| Millennials | 1981-1996 | 132 |
| Generation Z | 1997-2012 | 40 |
| Generation Alpha | 2013-2025 | 62 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Where are babies named Theadore born?
The states with the most babies named Theadore are Pennsylvania, South Carolina and California, with 42% of its births recorded by state since 1910; South Carolina is not among the ten states with the most births.
| State | Since 1910 | Rank, boys | vs. national |
|---|---|---|---|
| Pennsylvania | 160 | not ranked | 0.6× |
| South Carolina | 110 | not ranked | 1.6× |
| California | 92 | not ranked | 0.4× |
| Michigan | 86 | not ranked | 0.6× |
| North Carolina | 85 | not ranked | 0.7× |
| Ohio | 70 | not ranked | 0.4× |
| New York | 54 | not ranked | 0.2× |
| Illinois | 52 | not ranked | 0.3× |
| West Virginia | 26 | not ranked | 0.5× |
| Texas | 21 | not ranked | 0.1× |
Where Theadore is more common than its national share predicts
Relative to its national share, Theadore is most over-represented in South Carolina: since 1910 it was given 1.6 times as often there as its national share each year would predict.
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among boys’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Theadore with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 4 names spelled alike, given to 323,625 babies since 1880, Theadore is the second most given (1.2% of them). In 2025 it was given to 5 of their 13,410 babies (<1%), the third most given that year.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Theadore
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Theadore and names like it
- Compare Theadore and TheodoreBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1920sTheadore peaked in 1927.
- Pennsylvania’s most given namesThe state where SSA recorded the most babies named Theadore since 1910.
- The top names of 1927The year the most babies were named Theadore.
- The names of the Baby BoomersMost people named Theadore alive today were born 1946-1964.
- Names starting with TMost given first.