Boys name · Illinois
Declan in Illinois
Declan was the 123rd most popular boys name in Illinois in 2025, with 94 babies named Declan that year. Since 1992, Illinois families have named 2,986 babies Declan.
Popularity over time
Declan in Illinois, year by year
| Year | Babies | State rank |
|---|---|---|
| 1992 | 6 | 980th |
| 1997 | 11 | 681st |
| 2001 | 42 | 307th |
| 2006 | 67 | 223rd |
| 2011 | 123 | 125th |
| 2016 | 155 | 101st |
| 2020 | 148 | 89th |
| 2025 | 94 | 123rd |
Its rank among boys names in Illinois climbed from 980th in 1992 to 123rd in 2025.
The most babies named Declan in Illinois in a single year was 187, in 2018. Its best showing was 71st among boys names in 2018.
Across the country, Declan reached its best rank of 22nd in Wyoming (2018). See Declan in every state →
How popular is Declan in Illinois?
Declan was the 123rd most popular boys name in Illinois in 2025, with 94 babies named Declan that year. Since 1992, Illinois families have named 2,986 babies Declan.
How many babies are named Declan in Illinois?
In 2025, 94 babies were named Declan in Illinois. The most babies named Declan in Illinois in a single year was 187, in 2018.
What is the rank of Declan in Illinois?
Declan ranked 123rd among boys names in Illinois in 2025. Its best showing was 71st among boys names in 2018.
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