Girls' name · peaked in 1982

Jillian name popularity since 1925

83,424 babies born in the US from 1925 to 2025 were named Jillian. Half of them were born in 1995 or earlier, so the typical Jillian is about 31 years old in 2026. Jillian peaked in 1982 as the #96 name for girls, and it was outside the top 1,000 in 2025.

US babies since 1925: 83,424; Named Jillian, 1925–2025
Peak year: 1982; #96 for girls that year
Typical age: About 31; Median birth year 1995
In 2025: Not top 1,000; #1,266 for girls in 2025
Girls / boys: 99.7% girls; 83,197 girls · 227 boys
Most popular in: New Hampshire; 3.50× its national share

Peak year is the year Jillian made up the largest share of US girls, in records going back to 1880. Typical age is based on births from 1925 on, not on who is living today.

Jillian births per year, 1925–2025

1982 was the biggest year for Jillian both by count and as a share of all babies.

Fastest rise: Between 1972 and 1977, Jillian became 10× more common, from 1 in 15,100 baby girls to 1 in 1,450.
Steepest fall: Between 2010 and 2015, its share of baby girls fell by 61%, from 1 in 977 to 1 in 2,480.

Shaded on the chart. Both compare Jillian's share of all US girls five years apart, counting only years with at least 100 babies named Jillian.

Decade by decade

Babies named Jillian in each decade, and its rank among girls' names in the middle year of the decade (1935, 1945 … 2025).

Decade	Girls	Boys	Rank
1925–29	0	0	–
1930s	0	0	Under 5
1940s	37	0	Under 5
1950s	86	0	#4,931
1960s	333	0	#2,268
1970s	4,661	24	#1,270
1980s	25,446	128	#115
1990s	19,725	36	#197
2000s	22,822	39	#161
2010s	8,730	0	#440
2020–25	1,357	0	#1,266

Ranks count every name given to at least 5 girls that year, so they can go past 1,000. "Under 5" means fewer than 5 girls got the name.

Generation fingerprint

45.0% of babies named Jillian from 1925 to 2025 were born in the Millennial years (1981–1996). The full split by generation:

Where Jillian is most popular

The index compares Jillian's share of babies in each state with its share nationwide, 1925–2025 (1.50× = 50% more common). States with at least 300 babies named Jillian.

State	Index	Babies
New Hampshire	3.50×	907
Massachusetts	2.64×	5,186
Rhode Island	2.52×	737
Connecticut	2.10×	1,881
Delaware	1.92×	329

Names with a similar story

Of the other 1999 names on this site, these six had the share of babies closest in shape to Jillian's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Jillian.

Names from the same era

Other common names that peaked within two years of Jillian (1982).

Source: U.S. Social Security Administration national and state baby-name data, which covers names given to at least 5 babies of one sex in a year. About the data