Girls' name · since 1930
Rosilyn
Since 1930, U.S. Social Security records show 642 babies named Rosilyn, peaking in 1949. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #10,088 of 72,339
- all-time among girls
- 642
- born since 1930
- 1950s
- peak decade
642 girls have been named Rosilyn since 1930, though it isn't currently a top-ranked name.
Social Security Administration records show Rosilyn recorded 642 times among girls since 1930, though it doesn't currently rank among the most-used girls names, peaking in the 1950s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1930 to 2023.
- #10,088 of 72,339 all-time among girls
- 642 born since 1930
- 1950s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Rosilyn ranks #10,088 of 72,339 girls' names by all-time recorded births (highest first). 642 born since 1930, peaking in the 1950s.
- #10,088 of 72,339
- all-time among girls
- 642
- born since 1930
- 1950s
- peak decade
Rosilyn's 642 recorded births place it above 86.05% of the 72,339 girls names in the full SSA archive.
The state file records this name in 2 jurisdictions, led by North Carolina.
Rosilyn's usage pattern, beyond the headline number
Rosilyn splits its recorded history at 1967: 42% of all births land in the more recent half, 58% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1931 (5 births) -- compare that against the 1949 peak of 22 for a sense of just how much the name's popularity has swung.
Rosilyn popularity over time
Annual U.S. births registered with the Social Security Administration · 1930–2023
- Peak year (1949)
- 22
- Annual births at peak, across 94 years of records
Rosilyn by decade
1950s is the heaviest window (141 births, 22% of the file).
1950s was Rosilyn's strongest decade.
141 babies received the name during that ten-year window, about 22% of all-time use.
Rosilyn births by decade
Total births in each ten-year window
- 1930s 45
1930s
45 births
- 1940s
1940s
98 births
- 1950s
1950s
141 births
- 1960s
1960s
126 births
- 1970s
1970s
77 births
- 1980s 23
1980s
23 births
- 1990s 8
1990s
8 births
- 2000s 23
2000s
23 births
- 2010s
2010s
67 births
- 2020s 34
2020s
34 births
What this shows Peak: 1950s at 141 births (22% of all-time use).
How Rosilyn compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 girls names closest to Rosilyn's total volume
Rosilyn by state
Where Rosilyn concentrates geographically, total births since 1930
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | North Carolina | | 6 | 0.9% |
| #2 | New York | | 6 | 0.9% |
6 of 642 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
How popular is the name Rosilyn? ▼
Where does Rosilyn sit in the SSA name archive? ▼
When was Rosilyn most popular? ▼
Where is Rosilyn most popular? ▼
How long has the name Rosilyn been used? ▼
What names are similar to Rosilyn? ▼
What to do with Rosilyn's data
- Rosilyn's decade-level peak was the 1950s (141 total births); usage has since declined to 34 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- North Carolina records the most Rosilyns (6 births) -- see the full state breakdown if geography matters to your decision. North Carolina names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Rosilyn
Nearby Names Like Rosilyn
Names with a similar sound, spelling, or feel to Rosilyn
Compare Rosilyn side by side: Rosilyn vs Rose Rosilyn vs Rosa Rosilyn vs Rosemary
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Rosilyn: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1949)
Similar record span (~93 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 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, 1930–2023 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
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 Rosilyn 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 August 2026.