Popularity in the United States (by decade)

1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 0.040% 0.032% 0.024% 0.016% 0.008% 1880 2020
         

Numbers

 Guillermo (masculine) 
 Year   Rank   Percent Used 
2020 #838 0.015
2010 #680 0.018
2000 #435 0.029
1990 #378 0.031
1980 #411 0.023
1970 #441 0.020
1960 #538 0.011
1950 #611 0.007
1940 #669 0.006
1930 #687 0.007
1920 #709 0.007
1910 #1142 0.004
1900 #1203 0.003
1890 #1474 0.001
1880 - -