The baby name Portia appears in baby name data for the United States from 1914 to 2016. It was most popular in 1989 with 303 babies given the name.
Over the period shown, Portia has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1914 | 5 |
| 1915 | 10 |
| 1917 | 5 |
| 1918 | 5 |
| 1919 | 5 |
| 1920 | 5 |
| 1923 | 15 |
| 1926 | 15 |
| 1927 | 22 |
| 1928 | 8 |
| 1929 | 18 |
| 1932 | 20 |
| 1935 | 10 |
| 1940 | 6 |
| 1941 | 60 |
| 1942 | 122 |
| 1943 | 157 |
| 1944 | 56 |
| 1945 | 71 |
| 1946 | 124 |
| 1947 | 144 |
| 1948 | 170 |
| 1949 | 216 |
| 1950 | 190 |
| 1951 | 284 |
| 1952 | 172 |
| 1953 | 162 |
| 1954 | 189 |
| 1955 | 170 |
| 1956 | 113 |
| 1957 | 134 |
| 1958 | 107 |
| 1959 | 111 |
| 1960 | 157 |
| 1961 | 190 |
| 1962 | 86 |
| 1963 | 120 |
| 1964 | 120 |
| 1965 | 125 |
| 1966 | 96 |
| 1967 | 122 |
| 1968 | 85 |
| 1969 | 97 |
| 1970 | 101 |
| 1971 | 116 |
| 1972 | 77 |
| 1973 | 96 |
| 1974 | 58 |
| 1975 | 44 |
| 1976 | 59 |
| 1977 | 62 |
| 1978 | 93 |
| 1979 | 77 |
| 1980 | 114 |
| 1981 | 99 |
| 1982 | 85 |
| 1983 | 101 |
| 1984 | 153 |
| 1985 | 183 |
| 1986 | 246 |
| 1987 | 236 |
| 1988 | 284 |
| 1989 | 303 |
| 1989 | 8 |
| 1990 | 280 |
| 1991 | 221 |
| 1992 | 168 |
| 1993 | 105 |
| 1994 | 46 |
| 1995 | 36 |
| 1996 | 22 |
| 1997 | 22 |
| 1998 | 5 |
| 1999 | 6 |
| 2000 | 15 |
| 2001 | 23 |
| 2002 | 12 |
| 2004 | 15 |
| 2005 | 5 |
| 2007 | 6 |
| 2008 | 5 |
| 2009 | 7 |
| 2010 | 10 |
| 2011 | 17 |
| 2012 | 17 |
| 2013 | 5 |
| 2014 | 10 |
| 2015 | 5 |
| 2016 | 18 |