Addilyn
Addilyn was given to 256 girls in 2025, #988 among girls’ names; 9,862 Americans have been recorded with it since 1999 (Social Security Administration, published May 2026).
An estimated 9,800 Americans named Addilyn and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 9 years old and half are between 6 and 12.
Addilyn dropped 216 places in 2025, the #9 drop among the girls’ top 1,000 of 2024.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Addilyn by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Addilyn mean?
Wiktionary, English section
Addilyn is “a female given name of modern usage.”
Rare non-standard variant of Adeline.
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Addilyn?
#988 among girls’ names, 2025
Addilyn fell from #335 in 2015 to #988 in 2025 among girls’ names; its share of girls born fell from 0.55 to 0.16 per 1,000.
1,045 babies in 2016, the peak
Addilyn peaked in 2016, when 1,045 babies were given it (1,040 girls, #312 among girls’ names). The 256 births of 2025 are 24% of that peak.
| Year | Births | Rank | Per 1,000 girls |
|---|---|---|---|
| 2025 | 256 | #988 | 0.16 |
| 2024 | 365 | #772 | 0.23 |
| 2023 | 376 | #749 | 0.23 |
| 2022 | 520 | #575 | 0.32 |
| 2021 | 750 | #420 | 0.46 |
| 2020 | 652 | #469 | 0.40 |
| 2019 | 615 | #512 | 0.37 |
| 2018 | 875 | #359 | 0.51 |
| 2017 | 825 | #376 | 0.48 |
| 2016 | 1,040 | #312 | 0.59 |
Every recorded year (25)
| Year | Births | Rank | Per 1,000 girls |
|---|---|---|---|
| 2015 | 974 | #335 | 0.55 |
| 2014 | 570 | #543 | 0.32 |
| 2013 | 440 | #640 | 0.25 |
| 2012 | 404 | #695 | 0.23 |
| 2011 | 342 | #790 | 0.19 |
| 2010 | 264 | #967 | 0.15 |
| 2009 | 211 | #1,192 | 0.11 |
| 2008 | 137 | #1,642 | 0.07 |
| 2007 | 101 | #2,016 | 0.05 |
| 2006 | 49 | #3,316 | 0.03 |
| 2005 | 39 | #3,728 | 0.02 |
| 2004 | 18 | #6,488 | 0.01 |
| 2003 | 18 | #6,296 | 0.01 |
| 2001 | 11 | #8,757 | 0.01 |
| 1999 | 5 | #14,421 | under 0.01 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Addilyn a boy’s or a girl’s name?
Addilyn has been given almost only to girls: 5 boys in 25 years of records.
Girls and boys named Addilyn: the SSA national file counts each sex separately.
How many people are named Addilyn, and how old are they?
9,800 alive in 2026, estimated
That is 99% of the 9,862 Americans ever recorded as Addilyn. The median Addilyn alive today is 9 years old; half are between 6 and 12.
The 2020 Census counted 5,971 people named Addilyn (5,966 women and girls, 5 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 7,063 born in the U.S. The Census count is 15% below that prediction. Possible reasons: people who give a short form or another name to the Census, and a survival estimate that can run high.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Generation Z | 1997-2012 | 1,590 |
| Generation Alpha | 2013-2025 | 8,210 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Where are babies named Addilyn born?
The states with the most babies named Addilyn are Texas, North Carolina and Georgia, with 27% of its births recorded by state in 2025.
| State | Births 2025 | Rank, girls | vs. national |
|---|---|---|---|
| Texas | 24 | #1,118 | 0.8× |
| North Carolina | 16 | #634 | 1.2× |
| Georgia | 13 | #748 | 1.1× |
| Florida | 12 | #1,170 | 0.7× |
| Ohio | 11 | #802 | 1.4× |
| Michigan | 10 | #735 | 1.1× |
| Kentucky | 10 | #406 | 1.8× |
| California | 9 | #2,095 | 0.4× |
| Pennsylvania | 9 | #928 | 0.8× |
| Illinois | 9 | #928 | 0.8× |
Where Addilyn is more common than its national share predicts
Relative to its national share, Addilyn is most over-represented in Kentucky: since 1999 it was given 1.8 times as often there as its national share each year would predict.
States: SSA state file, 1910-2025, published May 8, 2026; births count girls and boys together, and the rank is among girls’ names in the state in 2025. The file leaves out any state and year with fewer than 5 babies of the name, so small states are undercounted; each ratio compares the state’s births of Addilyn with the births its national share predicts year by year, for states with at least 100 births of the name.
Names spelled alike
Of these 8 names spelled alike, given to 80,482 babies since 1880, Addilyn is the third most given (12% of them). In 2025 it was given to 256 of their 2,730 babies (9.4%), again the third most given.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Addilyn
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Addilyn and names like it
- Compare Addilyn and AdalynBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2010sAddilyn peaked in 2016.
- Texas’s most given namesThe state where SSA recorded the most babies named Addilyn since 1910.
- The top names of 2016The year the most babies were named Addilyn.
- The names of Generation AlphaMost people named Addilyn alive today were born 2013-2025.
- Names starting with AMost given first.