Boys name · Illinois
Alonzo in Illinois
Alonzo was the 364th most popular boys name in Illinois in 2025, with 29 babies named Alonzo that year. Since 1912, Illinois families have named 2,499 babies Alonzo.
Popularity over time
Alonzo in Illinois, year by year
| Year | Babies | State rank |
|---|---|---|
| 1912 | 5 | 330th |
| 1931 | 10 | 321st |
| 1948 | 24 | 265th |
| 1963 | 23 | 353rd |
| 1979 | 36 | 280th |
| 1994 | 24 | 447th |
| 2010 | 37 | 335th |
| 2025 | 29 | 364th |
Its rank among boys names in Illinois fell from 330th in 1912 to 364th in 2025.
The most babies named Alonzo in Illinois in a single year was 47, in 2019. Its best showing was 254th among boys names in 1962.
Across the country, Alonzo reached its best rank of 72nd in West Virginia (1910). See Alonzo in every state →
How popular is Alonzo in Illinois?
Alonzo was the 364th most popular boys name in Illinois in 2025, with 29 babies named Alonzo that year. Since 1912, Illinois families have named 2,499 babies Alonzo.
How many babies are named Alonzo in Illinois?
In 2025, 29 babies were named Alonzo in Illinois. The most babies named Alonzo in Illinois in a single year was 47, in 2019.
What is the rank of Alonzo in Illinois?
Alonzo ranked 364th among boys names in Illinois in 2025. Its best showing was 254th among boys names in 1962.
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.