Popularity in the United States (by decade)

1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 0.200% 0.160% 0.120% 0.080% 0.040% 1880 2020
         

Numbers

 Cassidy (feminine)   Cassidy (masculine) 
 Year   Rank   Percent Used   Rank   Percent Used 
2020 #459 0.038
- -
2010 #277 0.059
- -
2000 #164 0.104
- -
1990 #153 0.105
#1236 0.004
1980 #589 0.018
#861 0.006
1970 #1832 0.003
#1514 0.002
1960 - - - -
1950 - - - -
1940 - - - -
1930 - - - -
1920 - - - -
1910 - - - -
1900 - - - -
1890 - - - -
1880 - - - -