A reliable meaning for Addilyn isn’t established in our sources yet. Rather than guess, we show what is recorded: how the name is used, how often, and the names it’s connected to.
The story
Published U.S. birth records include this spelling as early as 1999. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Addilyn through the years
Babies since 1880
9,862
5 boys · 9,857 girls
Most popular year
2016
1,045 babies
2025
256
#988 for girls
2021–25 vs 2016–20
−43%
Cooling
Addilyn in U.S. Social Security birth records, 1999–2025, per million girls born. Years with fewer than five births for a sex are not published and appear as zero. Use the arrow keys to step through years.
Where it’s given
Most at home inNorth Dakota, Arkansas, Mississippi
FewerMore, relative to births Not published
2025 births by state of birth. Tiles are equal-sized so small states stay visible. Highest rates: North Dakota (5), Arkansas (9), Mississippi (7), Kentucky (10), Utah (9).
By the numbers
In 2025, this name appeared in 256 U.S. birth records for girls, ranking No. 988 among girls’ names. Average annual use for girls was 43.4% lower in 2021–2025 than in 2016–2020. Its largest published annual count for girls was 1,040 in 2016. In 2025, Texas had the largest reported state-level birth count for girls with this name (24). Published U.S. population figures for this spelling include 5,971 as a first name in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Addilyn’s family of names
In English usage, Addilyn has a related form in Adeline.