Fun Facts and Stats About Names Dog names, cat names, and humans too: Facts and Stats about the Dog name Rex from 15K+ adoptable Dogs across the U.S. that need homes Now! data last updated: 02/11/26 - Dig In Most adoptable Dogs with the the name rex live in the state of Texas and California. 25.0% live in Texas and California, 12.5% live in Pennsylvania, North Carolina, Florida and Illinois 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 mostly a male or female name? ♀♀♀♀♀ ♂ Rex is unquestionably a male Dog name. 99.99% of all Rex in the USA are male whereas merely 0.01% are female. FEMALEMALE If you're a Dog and your name is Rex you are most likelyA 10.0% are American Bulldog 10.0% are Pit Bull Terrier 10.0% are Shepherd 10.0% are Labrador Retriever Rex is a quite popular Dog name. Rex is currently the 57th most popular Dog name in the USA. 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: North Carolina 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: Carly Bart Chase Ashley