Jilliann
Jilliann was last recorded in 2016, when 6 babies were given it; 338 Americans have been recorded with it between 1977 and 2016 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Jilliann by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Jilliann?
Unranked in 2025
Its last girls’ rank on record is #15,170, in 2016; SSA lists a name only in years with 5 or more births.
17 babies in 2000, the peak
Jilliann peaked in 2000, when 17 girls were given it, #6,317 among girls’ names. It was not recorded in 2025.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2016 | 6 | #15,170 | 3.4 |
| 2015 | 5 | #17,672 | 2.8 |
| 2013 | 8 | #12,520 | 4.6 |
| 2011 | 13 | #8,862 | 7.4 |
| 2010 | 12 | #9,475 | 6.8 |
| 2009 | 11 | #10,286 | 6.0 |
| 2007 | 8 | #13,218 | 4.2 |
| 2006 | 13 | #8,949 | 6.8 |
| 2005 | 9 | #11,304 | 4.9 |
| 2004 | 14 | #7,999 | 7.6 |
Every recorded year (35)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2003 | 13 | #8,207 | 7.1 |
| 2002 | 13 | #8,019 | 7.2 |
| 2001 | 15 | #7,105 | 8.3 |
| 2000 | 17 | #6,317 | 9.4 |
| 1999 | 8 | #10,778 | 4.5 |
| 1998 | 7 | #11,669 | 4.0 |
| 1997 | 9 | #9,364 | 5.2 |
| 1996 | 7 | #11,070 | 4.0 |
| 1995 | 7 | #11,020 | 4.0 |
| 1993 | 9 | #9,053 | 5.0 |
| 1992 | 13 | #6,814 | 7.1 |
| 1991 | 7 | #10,764 | 3.7 |
| 1990 | 5 | #13,907 | 2.6 |
| 1989 | 10 | #7,677 | 5.4 |
| 1988 | 15 | #5,433 | 8.4 |
| 1987 | 5 | #12,080 | 2.9 |
| 1986 | 11 | #6,341 | 6.4 |
| 1985 | 14 | #5,171 | 8.1 |
| 1984 | 12 | #5,673 | 7.1 |
| 1983 | 7 | #8,399 | 4.2 |
| 1982 | 7 | #8,605 | 4.1 |
| 1981 | 10 | #6,526 | 6.0 |
| 1980 | 7 | #8,521 | 4.2 |
| 1978 | 5 | #10,407 | 3.3 |
| 1977 | 6 | #8,904 | 3.9 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Jilliann a boy’s or a girl’s name?
Jilliann has been recorded only for girls: SSA lists no boys with the name in 35 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Jilliann: the SSA national file counts each sex separately.
How many people are named Jilliann, and how old are they?
An estimated 331 Americans named Jilliann and born in the U.S. are alive in 2026 (98% of everyone recorded); the median is 28 years old and half are between 21 and 38. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 323 people named Jilliann (323 women and girls, 0 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 333 born in the U.S. The Census count is 3% below that prediction.
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).
Names spelled alike
Jilliann is a less common spelling of Jillian: SSA has recorded 338 Jilliann and 83,424 Jillian since 1880.
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. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Jilliann
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.