Total births
171
Girls' name · since 1950
Jillyn
Jillyn has 171 recorded births since 1950 in federal Social Security data, most heavily in 1976 -- full year-by-year trend, decade aggregates, and state rankings follow.
- 171
- total births
- 1950–2002
- years on record
- 1970s
- peak decade
- 33%
- born in that decade
171 girls have been named Jillyn since 1950, though it isn't currently a top-ranked name.
Jillyn has 171 recorded births among girls since 1950, per the U.S. Social Security Administration, though it falls outside today's most-used girls names, busiest in the 1970s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1950 to 2002.
- 171 total births
- 1950–2002 years on record
- 1970s peak decade
- 33% born in that decade
Data updated Jul 2026
The verdict
171 girls have been named Jillyn since 1950, peaking in the 1970s, last recorded in 2002.
- 171
- total births
- 1950–2002
- years on record
- 1970s
- peak decade
- 33%
- born in that decade
1970s
Peak decade
33% of everyone ever named Jillyn was born in this single decade.
1976
Single peak year
10 babies were named Jillyn in 1976 - its busiest year on record.
Jillyn's usage pattern, beyond the headline number
Splitting Jillyn's full recorded timeline at 1975, 53% of its total births fall in the more recent half of the record versus 47% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1950, with just 5 recorded births -- worth weighing against the 1976 peak of 10 to see the full range of the name's swing in popularity.
Jillyn at a glance
Last recorded 2002Peak year
1976
Current rank
Unranked
Active since
1950
Jillyn popularity over time
Annual U.S. births registered with the Social Security Administration · 1950–2002
- Peak year (1976)
- 10
- Annual births at peak, across 53 years of records
Jillyn by decade
Total births in each ten-year window, peak vs trough at a glance
1970s was Jillyn's strongest decade.
57 babies received the name during that ten-year window, about 33% of all-time use.
Jillyn births by decade
Total births in each ten-year window
- 1950s 10
1950s
10 births
- 1960s
1960s
41 births
- 1970s
1970s
57 births
- 1980s
1980s
47 births
- 1990s 11
1990s
11 births
- 2000s 5
2000s
5 births
What this shows Peak: 1970s at 57 births (33% of all-time use).
Jillyn by state
Where Jillyn concentrates geographically, total births since 1950
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Utah | | 7 | 4.1% |
Utah share of Jillyn's total US births 4.1%
7 of 171 births nationwide.
Frequently Asked Questions
How popular is the name Jillyn? ▼
Jillyn has been given to 171 babies in the U.S. since 1950, according to SSA data. Its last appearance in the data was 2002. 10 babies were born in 1976, its single highest year.
When was Jillyn most popular? ▼
Jillyn was most popular in the 1970s decade with 57 total births. The single peak year was 1976.
Where is Jillyn most popular? ▼
The top states for the name Jillyn are Utah (7 births).
How long has the name Jillyn been used? ▼
Records for Jillyn go back to 1950, giving 53 years of history through 2002.
What names are similar to Jillyn? ▼
Names with a similar sound or spelling include Jill, Jillian, Jilian, Jillene, and 4 more. These share a common prefix and are also used for girls.
What to do with Jillyn's data
- Jillyn's decade-level peak was the 1970s (57 total births); usage has since declined to 5 in the 2000s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Utah records the most Jillyns (7 births) -- see the full state breakdown if geography matters to your decision. Utah names
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Jillyn
Nearby Names Like Jillyn
Names with a similar sound, spelling, or feel to Jillyn
Jill Girl
#6184 208,071 births
Jillian Girl
#1130 83,197 births
Jilian Girl
803 births
Jillene Girl
632 births
Jil Girl
559 births
Compare Jillyn side by side: Jillyn vs Jill Jillyn vs Jillian Jillyn vs Jilian
Related Names
Names with a similar number of total births
Data Sources
Data as of July 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1950–2002 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Jillyn: Baby Name Since 1950 - 171 Births, Peak 1976." NameAlmanac. Accessed via https://namealmanac.com/name/jillyn. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Jillyn draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of July 2026.