Jillian
Jillian was given to 177 girls in 2025, #1,266 among girls’ names; 83,424 Americans have been recorded with it since 1944 (Social Security Administration, published May 2026).
An estimated 81,600 Americans named Jillian and born in the U.S. are alive in 2026 (98% of everyone recorded); the median is 31 years old and half are between 22 and 40.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Jillian by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Jillian mean?
Wiktionary, English section
Jillian is “a female given name from Latin, variant of Gillian.”
/ˈdʒɪljən/
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Jillian?
#1,266 among girls’ names, 2025
Jillian fell from #440 in 2015 to #1,266 in 2025 among girls’ names; its share of girls born fell from 0.40 to 0.11 per 1,000.
3,070 babies in 1982, the peak
Jillian peaked in 1982, when 3,070 babies were given it (3,056 girls, #96 among girls’ names). The 177 births of 2025 are 6% of that peak.
| Year | Births | Rank | Per 1,000 girls |
|---|---|---|---|
| 2025 | 177 | #1,266 | 0.11 |
| 2024 | 214 | #1,131 | 0.13 |
| 2023 | 214 | #1,135 | 0.13 |
| 2022 | 232 | #1,083 | 0.14 |
| 2021 | 253 | #1,011 | 0.15 |
| 2020 | 267 | #957 | 0.17 |
| 2019 | 353 | #787 | 0.21 |
| 2018 | 383 | #734 | 0.23 |
| 2017 | 525 | #574 | 0.30 |
| 2016 | 602 | #518 | 0.34 |
Every recorded year (80)
| Year | Births | Rank | Per 1,000 girls |
|---|---|---|---|
| 2015 | 721 | #440 | 0.40 |
| 2014 | 848 | #385 | 0.47 |
| 2013 | 945 | #342 | 0.54 |
| 2012 | 1,102 | #286 | 0.63 |
| 2011 | 1,431 | #221 | 0.81 |
| 2010 | 1,820 | #169 | 1.0 |
| 2009 | 2,041 | #157 | 1.1 |
| 2008 | 1,905 | #174 | 1.0 |
| 2007 | 1,787 | #187 | 0.93 |
| 2006 | 2,004 | #174 | 1.1 |
| 2005 | 2,121 | #161 | 1.1 |
| 2004 | 2,179 | #152 | 1.2 |
| 2003 | 2,425 | #135 | 1.3 |
| 2002 | 2,734 | #125 | 1.5 |
| 2001 | 2,847 | #120 | 1.6 |
| 2000 | 2,779 | #120 | 1.5 |
| 1999 | 2,280 | #142 | 1.3 |
| 1998 | 2,015 | #158 | 1.1 |
| 1997 | 1,849 | #166 | 1.1 |
| 1996 | 1,462 | #199 | 0.83 |
| 1995 | 1,503 | #197 | 0.85 |
| 1994 | 1,542 | #191 | 0.86 |
| 1993 | 1,980 | #157 | 1.1 |
| 1992 | 2,041 | #149 | 1.1 |
| 1991 | 2,377 | #136 | 1.3 |
| 1990 | 2,676 | #122 | 1.4 |
| 1989 | 2,922 | #106 | 1.6 |
| 1988 | 2,746 | #104 | 1.5 |
| 1987 | 2,793 | #99 | 1.6 |
| 1986 | 2,587 | #107 | 1.5 |
| 1985 | 2,475 | #115 | 1.4 |
| 1984 | 2,624 | #106 | 1.6 |
| 1983 | 2,514 | #115 | 1.5 |
| 1982 | 3,056 | #96 | 1.8 |
| 1981 | 2,079 | #137 | 1.2 |
| 1980 | 1,650 | #171 | 1.0 |
| 1979 | 1,506 | #179 | 0.94 |
| 1978 | 1,339 | #194 | 0.87 |
| 1977 | 1,054 | #236 | 0.69 |
| 1976 | 255 | #615 | 0.17 |
| 1975 | 88 | #1,270 | 0.06 |
| 1974 | 84 | #1,279 | 0.06 |
| 1973 | 93 | #1,172 | 0.06 |
| 1972 | 101 | #1,107 | 0.07 |
| 1971 | 66 | #1,521 | 0.04 |
| 1970 | 75 | #1,395 | 0.04 |
| 1969 | 48 | #1,766 | 0.03 |
| 1968 | 78 | #1,238 | 0.05 |
| 1967 | 43 | #1,769 | 0.03 |
| 1966 | 31 | #2,121 | 0.02 |
| 1965 | 28 | #2,267 | 0.02 |
| 1964 | 32 | #2,129 | 0.02 |
| 1963 | 23 | #2,578 | 0.01 |
| 1962 | 22 | #2,627 | 0.01 |
| 1961 | 15 | #3,385 | 0.01 |
| 1960 | 13 | #3,571 | 0.01 |
| 1959 | 7 | #5,259 | under 0.01 |
| 1958 | 6 | #5,708 | under 0.01 |
| 1957 | 14 | #3,208 | 0.01 |
| 1956 | 12 | #3,572 | 0.01 |
| 1955 | 7 | #4,930 | under 0.01 |
| 1954 | 10 | #3,831 | 0.01 |
| 1953 | 7 | #4,786 | under 0.01 |
| 1952 | 11 | #3,452 | 0.01 |
| 1951 | 6 | #5,105 | under 0.01 |
| 1950 | 6 | #4,984 | under 0.01 |
| 1949 | 5 | #5,595 | under 0.01 |
| 1948 | 12 | #3,050 | 0.01 |
| 1947 | 15 | #2,691 | 0.01 |
| 1944 | 5 | #4,875 | under 0.01 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Jillian a boy’s or a girl’s name?
Jillian has been given almost only to girls: 227 boys in 80 years of records.
Girls and boys named Jillian: the SSA national file counts each sex separately.
How many people are named Jillian, and how old are they?
81,600 alive in 2026, estimated
That is 98% of the 83,424 Americans ever recorded as Jillian. The median Jillian alive today is 31 years old; half are between 22 and 40.
The 2020 Census counted 78,761 people named Jillian (78,578 women and girls, 183 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 80,736 born in the U.S. The Census count is 2% below that prediction.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Silent Generation | 1928-1945 | 3 |
| Baby Boomers | 1946-1964 | 179 |
| Generation X | 1965-1980 | 6,240 |
| Millennials | 1981-1996 | 36,400 |
| Generation Z | 1997-2012 | 33,000 |
| Generation Alpha | 2013-2025 | 5,700 |
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 Jillian born?
The states with the most babies named Jillian are New York, California and Massachusetts, with 27% of its births recorded by state since 1910; Massachusetts is not among the ten states with the most births.
| State | Since 1910 | Rank, girls | vs. national |
|---|---|---|---|
| New York | 9,036 | #1,115 | 1.6× |
| California | 7,769 | #1,531 | 0.7× |
| Massachusetts | 5,186 | #814 | 2.7× |
| Pennsylvania | 4,908 | #1,303 | 1.4× |
| Texas | 4,293 | #1,850 | 0.6× |
| Illinois | 4,280 | #1,506 | 1.1× |
| Ohio | 4,126 | #726 | 1.1× |
| New Jersey | 4,026 | #981 | 1.7× |
| Michigan | 3,701 | not ranked | 1.2× |
| Florida | 3,201 | #2,013 | 0.8× |
Where Jillian is more common than its national share predicts
Relative to its national share, Jillian is most over-represented in Massachusetts: since 1944 it was given 2.7 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 Jillian 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 85,535 babies since 1880, Jillian is the most given (98% of them). In 2025 it was given to 177 of their 177 babies (100%), again the 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 Jillian
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 Jillian and names like it
- Compare Jillian and JilianBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1980sJillian peaked in 1982.
- New York’s most given namesThe state where SSA recorded the most babies named Jillian since 1910.
- The top names of 1982The year the most babies were named Jillian.
- The names of the MillennialsMost people named Jillian alive today were born 1981-1996.
- Names starting with JMost given first.