Meaning not yet researched.
Theodor: US boys given the name each year, 1880 to 2025, from Social Security card applications. 76 in 2025. Its best rank was #1,055 in 1887.
US births per year · SSA card applications
Peaked at #1,055 in 1887; #2,004 in 2025. Every baby recorded as Theodor in 2025 was a boy.
Baby name · US data 1880–2025
#2,004 for US boys in 2025. Its best year was 1887, at #1,055.
Hover, tap or use the arrow keys for any year. Years with fewer than five babies of a sex are not published by SSA and show as zero.
Theodor: US boys given the name each year from 1880 to 2025. 76 boys in 2025. Peak: #1,055 in 1887 · most boys in one year: 88 (2022).
In 2025, 76 US boys were named Theodor, making it the 2,004th most common boys’ name of the year, up 111 places from #2,115 in 2024. That is 5 more than the 71 boys named Theodor in 2024. Its best rank for boys was #1,055, reached in 1887. The most boys given the name in a single year was 88, in 2022. For comparison, it was #2,408 in 2015 and #2,427 in 1950.
Social Security card records list Theodor in 113 years of the 146 from 1880 to 2025, starting in 1884 with 5 babies. In all, 2,216 US babies have been given the name, all of them boys. Its busiest decade was the 2010s, with 492 babies named Theodor.
Over the 10 years from 2016 to 2025, 736 US boys were named Theodor; the busiest of those years was 2022, with 88. In 2025 that was about 1 in 22,475 of the boys in SSA’s list for the year.
Among the states, Theodor ranked highest in Massachusetts in 2025, at #887 for boys there. It was not in the top 100 of any state. Related spellings in the SSA files include Theodore (318,175 babies since 1880) and Theadore (4,005 babies since 1880). Rarer spellings such as Theodoro are summarised on this page.
Meaning not yet researched.
We publish a meaning only with a cited source and a confidence label, and never generate one. Meanings are being researched for the most common names first.
Rare spellings summarised here: Theodoro (309).
Numbers are all-time US births. Links come from Wikidata’s “said to be the same as” (P460, CC0) and our spelling rule: at most two letters different, with the same sound pattern.
No nicknames listed for Theodor in the open dataset we use.
Source: carltonnorthern/nicknames (Apache-2.0).
US boys. Rank within each state. SSA leaves out states where fewer than five boys got the name, so 44 are not listed.
| State | Births 2025 | Rank 2025 | Rank 2015 |
|---|---|---|---|
| Massachusetts | 5 | #887 | — |
| Pennsylvania | 5 | #1,418 | — |
| Ohio | 5 | #1,451 | — |
| California | 8 | #1,968 | #2,023 |
| New York | 5 | #2,017 | — |
| Florida | 5 | #2,068 | — |
| Texas | 5 | #2,915 | #2,698 |
Births and national rank for each year SSA lists the name, newest first.
| Year | Girls | Girls rank | Boys | Boys rank |
|---|---|---|---|---|
| 2025 | — | — | 76 | #2,004 |
| 2024 | — | — | 71 | #2,115 |
| 2023 | — | — | 86 | #1,864 |
| 2022 | — | — | 88 | #1,836 |
| 2021 | — | — | 70 | #2,094 |
| 2020 | — | — | 79 | #1,892 |
| 2019 | — | — | 85 | #1,814 |
| 2018 | — | — | 65 | #2,164 |
| 2017 | — | — | 54 | #2,414 |
| 2016 | — | — | 62 | #2,203 |
| 2015 | — | — | 54 | #2,408 |
| 2014 | — | — | 56 | #2,342 |
| 2013 | — | — | 45 | #2,664 |
| 2012 | — | — | 20 | #4,843 |
| 2011 | — | — | 25 | #4,095 |
| 2010 | — | — | 26 | #3,982 |
| 2009 | — | — | 21 | #4,728 |
| 2008 | — | — | 20 | #4,878 |
| 2007 | — | — | 21 | #4,623 |
| 2006 | — | — | 16 | #5,498 |
| 2005 | — | — | 22 | #4,178 |
| 2004 | — | — | 18 | #4,775 |
| 2003 | — | — | 12 | #6,213 |
| 2002 | — | — | 24 | #3,660 |
| 2001 | — | — | 16 | #4,868 |
| 2000 | — | — | 19 | #4,188 |
| 1999 | — | — | 16 | #4,515 |
| 1998 | — | — | 19 | #3,832 |
| 1997 | — | — | 6 | #9,151 |
| 1996 | — | — | 11 | #5,496 |
| 1995 | — | — | 16 | #4,031 |
| 1994 | — | — | 11 | #5,417 |
| 1993 | — | — | 11 | #5,322 |
| 1992 | — | — | 13 | #4,546 |
| 1991 | — | — | 12 | #4,734 |
| 1990 | — | — | 12 | #4,643 |
| 1989 | — | — | 16 | #3,601 |
| 1988 | — | — | 11 | #4,424 |
| 1987 | — | — | 14 | #3,491 |
| 1986 | — | — | 8 | #5,285 |
| 1985 | — | — | 11 | #4,025 |
| 1984 | — | — | 9 | #4,520 |
| 1983 | — | — | 7 | #5,433 |
| 1981 | — | — | 11 | #3,834 |
| 1980 | — | — | 11 | #3,821 |
| 1978 | — | — | 10 | #3,825 |
| 1977 | — | — | 9 | #4,134 |
| 1976 | — | — | 13 | #3,079 |
| 1974 | — | — | 9 | #3,812 |
| 1973 | — | — | 7 | #4,457 |
| 1972 | — | — | 8 | #3,930 |
| 1971 | — | — | 11 | #3,128 |
| 1970 | — | — | 12 | #2,876 |
| 1969 | — | — | 11 | #2,842 |
| 1968 | — | — | 17 | #2,027 |
| 1967 | — | — | 8 | #3,212 |
| 1966 | — | — | 11 | #2,611 |
| 1965 | — | — | 11 | #2,601 |
| 1964 | — | — | 11 | #2,649 |
| 1963 | — | — | 17 | #2,040 |
| 1962 | — | — | 8 | #3,283 |
| 1961 | — | — | 15 | #2,232 |
| 1960 | — | — | 15 | #2,199 |
| 1959 | — | — | 10 | #2,805 |
| 1958 | — | — | 16 | #2,085 |
| 1957 | — | — | 13 | #2,365 |
| 1956 | — | — | 21 | #1,759 |
| 1955 | — | — | 13 | #2,297 |
| 1954 | — | — | 12 | #2,430 |
| 1953 | — | — | 14 | #2,177 |
| 1952 | — | — | 14 | #2,146 |
| 1951 | — | — | 15 | #2,047 |
| 1950 | — | — | 11 | #2,427 |
| 1949 | — | — | 8 | #2,997 |
| 1948 | — | — | 10 | #2,602 |
| 1947 | — | — | 13 | #2,243 |
| 1946 | — | — | 18 | #1,751 |
| 1945 | — | — | 5 | #3,732 |
| 1944 | — | — | 14 | #1,976 |
| 1943 | — | — | 13 | #2,174 |
| 1942 | — | — | 11 | #2,376 |
| 1941 | — | — | 10 | #2,476 |
| 1940 | — | — | 11 | #2,308 |
| 1939 | — | — | 11 | #2,281 |
| 1938 | — | — | 12 | #2,172 |
| 1937 | — | — | 10 | #2,466 |
| 1936 | — | — | 12 | #2,169 |
| 1935 | — | — | 10 | #2,514 |
| 1934 | — | — | 12 | #2,251 |
| 1933 | — | — | 12 | #2,200 |
| 1932 | — | — | 20 | #1,645 |
| 1931 | — | — | 8 | #3,075 |
| 1930 | — | — | 13 | #2,282 |
| 1929 | — | — | 13 | #2,310 |
| 1928 | — | — | 13 | #2,375 |
| 1927 | — | — | 19 | #1,864 |
| 1926 | — | — | 18 | #1,904 |
| 1925 | — | — | 16 | #2,078 |
| 1924 | — | — | 13 | #2,455 |
| 1923 | — | — | 9 | #3,151 |
| 1922 | — | — | 12 | #2,620 |
| 1921 | — | — | 15 | #2,255 |
| 1920 | — | — | 11 | #2,745 |
| 1919 | — | — | 12 | #2,499 |
| 1918 | — | — | 18 | #1,899 |
| 1917 | — | — | 23 | #1,524 |
| 1916 | — | — | 15 | #2,035 |
| 1915 | — | — | 15 | #1,959 |
| 1914 | — | — | 15 | #1,676 |
| 1913 | — | — | 12 | #1,668 |
| 1892 | — | — | 6 | #1,057 |
| 1887 | — | — | 5 | #1,055 |
| 1884 | — | — | 5 | #1,108 |
About the data: counts are Social Security card applications for US births, for names given to at least five babies of a sex in a year (SSA, names.zip, public domain). Ranks follow SSA’s own order: most births first, ties alphabetical. Files retrieved 2026-10-05 (checksum on our sources page).