What does Rex mean?
Rex▼ has 1 variant: Reyes▼.
For more information, see also the related boy name Rey.
Rex has 1 feminine form: Rexanne.
Rex is a very popular first name for men (#333 out of 1220, Top 27%) and also a very popular last name for both adults and children (#5824 out of 150436, Top 4%). (2000 U.S. Census)
Displayed below is the birth name popularity of Rex for boys. Rex reached its peak rank of #216 in the U.S. during 1950-1959, and is currently at #663. (2014 Birth Statistics)
Displayed below is a comparison of the popularity of Rex and affiliated names. Rey (#884 a year ago) and Reyes are the popular related forms of Rex (#663 a year ago) ranked in the Top 1000. These boy names reached the top of their popularity during the years 1940-1949 (usage of 0.3273%) and are now much less popular (usage 0.151%, down 53.9%), with the versions Rex and Reyes becoming less trendy. (2014 Birth Statistics)