girls:
141 births since 1921
#5575 (2nd percentile)
boys:
59.8k births since 1880
#441 (90th percentile)
overall:
60k births since 1880
#963 (88th percentile)
The name Rex is the #963 most popular name of all time in the U.S. on a gender-neutral basis, with a total of 59,980 recorded births since 1880. This represents the 87.6% percentile of name popularity (more popular than 87.6% of all names). For boys, it ranks #441 (90.4% percentile) for all time with 59,839 births since 1880. For girls, it ranks #5,575 (2.4% percentile) for all time with 141 births since 1921.
Rex has appeared in U.S. birth records since the beginning of our dataset in 1880 (since 1880 for boys and since 1921 for girls).
The name Rex has been given almost exclusively to boys, with 99.8% of all recorded births being male.
For boys, Rex reached its peak popularity in 1951, achieving the 72.7% percentile (ranked #167) with 786 births per million. The name was most common in 1951, with 786 births per million (ranked 72.7% percentile). Since reaching a high point around 2020, the popularity of this name for boys has been declining. Currently, Rex ranks #576 for boys (36.8% percentile) with 200 births per million, which is 25.4% of its peak share of births.
For girls, Rex reached its peak popularity in 1925, achieving the 0.7% percentile (ranked #610) with 7 births per million. The name was most common in 1925, with 7 births per million (ranked 0.7% percentile). There have been no recorded female births with this name since 1984.
This chart shows the total number of births per million babies in each year for the name "Rex".
These names exclude other spelling variations of this name. View all variations of Rex.
These similar-looking names have spellings that are closest to the spelling of "Rex", in the sense that there are the fewest number of letter differences between the two spellings. These names exclude other spelling variations of this name. View all variations of Rex.
Our model found one way to pronounce the name Rex. Click the play button under each pronunciation to hear it spoken aloud.
Our model is 100.0% confident that Rex is pronounced as rehks, which has 1 syllables.
If none of the pronunciations above sound right to you, could you please check whether any of these related pronunciations should be applied to the name Rex? These are pronunciations that other similar names use, but which are not currently associated with Rex. If you think any of these are valid pronunciations for Rex, please vote using the thumbs up button.
Our confidence scores estimate the likelihood that a particular pronunciation is the most correct for a given name spelling. These scores are derived from pronunciation dictionaries, manual verification, your feedback, and a fine-tuned large language model trained to generate name pronunciations.
For any given spelling, confidence scores across all identified pronunciations sum to 100%. However, these scores don't account for the possibility of valid pronunciations that our model hasn't identified.
The raw pronunciations shown (like R EH1 K S) use the ARPAbet phoneme system, a standardized way to represent English speech sounds. Each symbol represents a distinct sound in American English. Visit the ARPAbet Wikipedia page to learn more about these phonetic symbols.
Pronunciation audio is generated by an open source text to speech model that has been customized to adhere to pronunciations provided in ARPAbet format, but sometimes pronunciations that differ subtly will sound identical, particularly if the only difference is the level of emphasis on a syllable or a single vowel sound.
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