Boys name · Illinois
Rex in Illinois
Rex was the 996th most popular boys name in Illinois in 2025, with 8 babies named Rex that year. Since 1912, Illinois families have named 2,484 babies Rex.
Popularity over time
Rex in Illinois, year by year
| Year | Babies | State rank |
|---|---|---|
| 1912 | 8 | 274th |
| 1927 | 12 | 341st |
| 1942 | 36 | 198th |
| 1957 | 73 | 189th |
| 1973 | 12 | 528th |
| 1988 | 5 | 1037th |
| 2010 | 16 | 656th |
| 2025 | 8 | 996th |
Its rank among boys names in Illinois fell from 274th in 1912 to 996th in 2025.
The most babies named Rex in Illinois in a single year was 84, in 1951. Its best showing was 149th among boys names in 1951.
Across the country, Rex reached its best rank of 39th in Utah (1914). See Rex in every state →
How popular is Rex in Illinois?
Rex was the 996th most popular boys name in Illinois in 2025, with 8 babies named Rex that year. Since 1912, Illinois families have named 2,484 babies Rex.
How many babies are named Rex in Illinois?
In 2025, 8 babies were named Rex in Illinois. The most babies named Rex in Illinois in a single year was 84, in 1951.
What is the rank of Rex in Illinois?
Rex ranked 996th among boys names in Illinois in 2025. Its best showing was 149th among boys names in 1951.
Source: U.S. Social Security Administration, names by state of birth (public domain). Counts below 5 in a state-year are omitted by the SSA for privacy.
The same name elsewhere