Popularity (feminine) in the United States (by decade)

1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 68,000 54,400 40,800 27,200 13,600 1880 2000
         

Numbers

 Jo (feminine) 
 Year   Rank   Times Used 
2000 - -
1990 - -
1980 #878 1547
1970 #379 5925
1960 #181 20203
1950 #68 63932
1940 #60 48436
1930 #90 28643
1920 #254 6897
1910 #532 1193
1900 #639 311
1890 #852 124
1880 #860 57