Girls' name · since 1943
Ilsa
917 babies named Ilsa in U.S. Social Security records since 1943, with the highest year being 2011. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #7,979 of 72,339
- all-time among girls
- #5,589 of 17,297
- 2025 SSA year
- 917
- born since 1943
- 2010s
- peak decade
917 babies have been named Ilsa since 1943, making it today's #5589 girls' name.
According to the U.S. Social Security Administration, Ilsa has been recorded 917 times among girls since 1943, currently ranked #5589 nationally and more common than 68% of girls, with its heaviest use in the 2010s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1943 to 2025.
- #7,979 of 72,339 all-time among girls
- #5,589 of 17,297 2025 SSA year
- 917 born since 1943
- 2010s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Ilsa ranks #7,979 of 72,339 girls' names by all-time recorded births (highest first) and #5,589 of 17,297 among girls' names in 2025. 917 born since 1943, peaking in the 2010s.
- #7,979 of 72,339
- all-time among girls
- #5,589 of 17,297
- 2025 SSA year
- 917
- born since 1943
- 2010s
- peak decade
Ilsa's 917 recorded births place it above 88.96% of the 72,339 girls names in the full SSA archive.
The state file records this name in 2 jurisdictions, led by California.
How Ilsa compares
917 Top 34% higher than 66% of 17,297 names currently given to girls
Based on all-time total births among currently-ranked girls names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Ilsa's all-time total is 144% above the median girls name, and Olivia still leads by a wide margin.
| Metric | Ilsa | Median girls name (Kyann) | #1 girls name (Olivia) |
|---|---|---|---|
| All-time total births | 917 | 376 | 567,345 |
| Peak-year births | 34 | 21 | 19,840 |
Ilsa's usage pattern, beyond the headline number
Divide Ilsa's SSA record in two at 1988 and the more recent half accounts for 67% of all births, the earlier half the remaining 33%, consistent with a name still gaining ground rather than fading. Its calmest year was 1945, with only 5 births recorded -- set against the 2011 peak of 34, that's the full swing in one name's fortunes.
Ilsa popularity over time
Annual U.S. births registered with the Social Security Administration · 1943–2025
- Peak year (2011)
- 34
- Annual births at peak, across 83 years of records
Ilsa by decade
2010s is the heaviest window (205 births, 22% of the file).
2010s was Ilsa's strongest decade.
205 babies received the name during that ten-year window, about 22% of all-time use.
Ilsa births by decade
Total births in each ten-year window
- 1940s 35
1940s
35 births
- 1950s 36
1950s
36 births
- 1960s
1960s
88 births
- 1970s 79
1970s
79 births
- 1980s
1980s
85 births
- 1990s
1990s
120 births
- 2000s
2000s
179 births
- 2010s
2010s
205 births
- 2020s
2020s
90 births
What this shows Peak: 2010s at 205 births (22% of all-time use).
How Ilsa 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 Ilsa's total volume
Ilsa by state
Where Ilsa concentrates geographically, total births since 1943
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 5 | 0.5% |
| #2 | New York | | 5 | 0.5% |
5 of 917 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
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What to do with Ilsa's data
- Ilsa's usage has stayed within range of its 2010s decade-level peak (205 total births) through the 2020s (90) -- a comparatively stable name, not a fading trend.
- California records the most Ilsas (5 births) -- see the full state breakdown if geography matters to your decision. California names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Ilsa
Nearby Names Like Ilsa
Names with a similar sound, spelling, or feel to Ilsa
Compare Ilsa side by side: Ilsa vs Ilse Ilsa vs Ilsy Ilsa vs Ilsi
Related Names
Names with a similar popularity rank to Ilsa
Nationwide names with similar peak year or record span
Two nationwide peer axes for Ilsa: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~2011)
Similar record span (~82 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, 1943–2025 (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 Ilsa 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.