How popular is “Duffy” in the USA?
Number of people named “Duffy” by birth year
This chart shows how many people named “Duffy” were born each year.
Due to changes to population growth and data collection rates over time, this isn't a good chart for understanding popularity.
Popularity of “Duffy” by birth year
This chart shows how the popularity of “Duffy” has changed over time.
Popularity is the number of people named “Duffy” born in that year divided by the total number of births for that year.
Bias in sex for “Duffy” by birth year
This chart shows how “Duffy” has been used as gendered name over time. The scale ranges from 1 (only females) to -1 (only males).
Sex is a required field in SSA's Social Security Card applications (only 2 options). Most applications are filed around a person's time of birth.
The raw data
This table shows the data used in the above charts.
| Year | Count | Proportion | Females | Males | Bias toward female |
|---|---|---|---|---|---|
| 1915 | 5 | 0.000002729 | 5 | -100% | |
| 1917 | 7 | 0.000003488 | 7 | -100% | |
| 1918 | 7 | 0.000003224 | 7 | -100% | |
| 1919 | 5 | 0.000002369 | 5 | -100% | |
| 1920 | 6 | 0.000002652 | 6 | -100% | |
| 1921 | 6 | 0.00000257 | 6 | -100% | |
| 1922 | 9 | 0.000003932 | 9 | -100% | |
| 1924 | 5 | 0.000002099 | 5 | -100% | |
| 1925 | 7 | 0.000003 | 7 | -100% | |
| 1927 | 5 | 0.000002156 | 5 | -100% | |
| 1928 | 9 | 0.000003981 | 9 | -100% | |
| 1929 | 7 | 0.000003193 | 7 | -100% | |
| 1930 | 5 | 0.000002249 | 5 | -100% | |
| 1932 | 7 | 0.000003316 | 7 | -100% | |
| 1936 | 6 | 0.000002888 | 6 | -100% | |
| 1937 | 5 | 0.000002347 | 5 | -100% | |
| 1941 | 6 | 0.000002463 | 6 | -100% | |
| 1943 | 5 | 0.000001771 | 5 | -100% | |
| 1944 | 10 | 0.000003717 | 10 | -100% | |
| 1945 | 6 | 0.000002262 | 6 | -100% | |
| 1946 | 8 | 0.000002504 | 8 | -100% | |
| 1947 | 12 | 0.000003331 | 12 | -100% | |
| 1948 | 12 | 0.000003476 | 12 | -100% | |
| 1949 | 9 | 0.000002583 | 9 | -100% | |
| 1950 | 14 | 0.000003996 | 14 | -100% | |
| 1951 | 11 | 0.000002986 | 11 | -100% | |
| 1952 | 12 | 0.00000316 | 12 | -100% | |
| 1953 | 8 | 0.000002076 | 8 | -100% | |
| 1954 | 15 | 0.000003768 | 15 | -100% | |
| 1955 | 18 | 0.000004483 | 18 | -100% | |
| 1956 | 15 | 0.000003638 | 15 | -100% | |
| 1957 | 15 | 0.00000357 | 15 | -100% | |
| 1958 | 21 | 0.00000508 | 5 | 16 | -52% |
| 1959 | 12 | 0.000002886 | 12 | -100% | |
| 1961 | 26 | 0.000006277 | 5 | 21 | -62% |
| 1962 | 13 | 0.000003222 | 13 | -100% | |
| 1963 | 10 | 0.000002526 | 10 | -100% | |
| 1964 | 12 | 0.000003087 | 12 | -100% | |
| 1965 | 13 | 0.000003586 | 13 | -100% | |
| 1966 | 13 | 0.00000374 | 13 | -100% | |
| 1967 | 8 | 0.000002356 | 8 | -100% | |
| 1968 | 10 | 0.00000296 | 10 | -100% | |
| 1969 | 22 | 0.00000633 | 22 | -100% | |
| 1970 | 14 | 0.000003882 | 6 | 8 | -14% |
| 1971 | 9 | 0.000002622 | 9 | -100% | |
| 1972 | 12 | 0.000003818 | 12 | -100% | |
| 1973 | 16 | 0.000005303 | 16 | -100% | |
| 1974 | 20 | 0.000006579 | 20 | -100% | |
| 1975 | 20 | 0.000006624 | 20 | -100% | |
| 1976 | 12 | 0.000003955 | 12 | -100% | |
| 1977 | 15 | 0.000004722 | 15 | -100% | |
| 1978 | 21 | 0.000006617 | 21 | -100% | |
| 1980 | 6 | 0.000001742 | 6 | -100% | |
| 1981 | 8 | 0.000002313 | 8 | -100% | |
| 1982 | 11 | 0.000003136 | 11 | -100% | |
| 1984 | 7 | 0.000002006 | 7 | -100% | |
| 1991 | 7 | 0.000001797 | 7 | -100% | |
| 1992 | 5 | 0.000001302 | 5 | -100% | |
| 1994 | 6 | 0.000001614 | 6 | -100% | |
| 1995 | 7 | 0.000001911 | 7 | -100% | |
| 1998 | 5 | 0.000001359 | 5 | -100% | |
| 2012 | 5 | 0.000001367 | 5 | -100% |
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