Fun Facts and Stats About Names Dog names, cat names, and humans too: Facts and Stats about the Dog name Rex from 2K+ adoptable Dogs across the U.S. that need homes Now! data last updated: 03/28/26 - Dig In Most adoptable Dogs with the the name rex live in the state of California. 30.0% live in California, 10.0% live in Florida, Illinois, Oklahoma, Texas and Arizona If you want to stand out take your Dog to New Hampshire (None live there). The majority of Dogs with the name Rex are in the other group Is Rex commonly a male or female name? ♀♀♀♀♀ ♂ Rex is without doubt a male Dog name. 99.99% of all Rex in the United States are male while merely 0.01% are female. FEMALEMALE If you're a Dog and your name is Rex you are most likelyA Pit Bull Terrier 15.79% of all Dogs named Rex are Pit Bull Terrier 10.53% are Australian Shepherd 10.53% are Siberian Husky 10.53% are German Shepherd Dog 10.53% are American Bulldog Rex is a very popular Dog name. Rex is currently the 45th most popular Dog name in the United States. it reached its peak popularity as the 22nd most common Dog name in Dec. In the past few months, the name has lost some of its popularity. Fun fact: Oklahoma is the state with the highest per capita adoptable Dogs named rex Check out the per capita popularity of Dogs named rex for each state in the map below. Is the Dog name rex only for Dogs? Nope The first name rex is a human name & There is also a Cat named rex Did you enjoy this page? Share it! Facebook Twitter Tumblr Reddit And check out more names: Sandy Patty Lou Robin