Unisex name · since 1942
Costello
Since 1942, U.S. Social Security records show 67 babies named Costello, peaking in 1951. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #20,093 of 45,481
- all-time among boys
- #10,855 of 13,930
- 2025 SSA year
- 67
- born since 1942
- 1950s
- peak decade
67 babies have been named Costello since 1942, making it today's #10855 unisex name.
According to the U.S. Social Security Administration, Costello has been recorded 67 times among boys since 1942, currently ranked #10855 nationally and more common than 22% of boys, with its heaviest use in the 1950s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1942 to 2025.
- #20,093 of 45,481 all-time among boys
- #10,855 of 13,930 2025 SSA year
- 67 born since 1942
- 1950s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Costello ranks #20,093 of 45,481 boys' names by all-time recorded births (highest first) and #10,855 of 13,930 among boys' names in 2025. 67 born since 1942, peaking in the 1950s.
- #20,093 of 45,481
- all-time among boys
- #10,855 of 13,930
- 2025 SSA year
- 67
- born since 1942
- 1950s
- peak decade
Costello's 67 recorded births place it above 55.61% of the 45,481 boys names in the full SSA archive.
No state rows cleared SSA’s public reporting threshold for this name.
How Costello compares
67 20th percentile among 13,930 names currently given to boys
Based on all-time total births among currently-ranked boys 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
Costello's all-time total is 82% below the median boys name, and Liam still leads by a wide margin.
| Metric | Costello | Median boys name (Takari) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 67 | 369 | 358,536 |
| Peak-year births | 11 | 34 | 22,252 |
Costello's usage pattern, beyond the headline number
Divide Costello's SSA record in two at 1975 and the more recent half accounts for 49% of all births, the earlier half the remaining 51%, a genuinely balanced usage pattern. Its calmest year was 1942, with only 5 births recorded -- set against the 1951 peak of 11, that's the full swing in one name's fortunes.
Costello popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 1942–2025
- Peak year (1951)
- 11
- Annual births at peak, across 84 years of records
Costello popularity over time - girls
5 total births recorded since 1931 (Costello as girls' name)
Costello by decade
1950s is the heaviest window (23 births, 34% of the file).
1950s was Costello's strongest decade.
23 babies received the name during that ten-year window, about 34% of all-time use.
Costello births by decade
Total births in each ten-year window
- 1940s 5
1940s
5 births
- 1950s
1950s
23 births
- 1970s
1970s
11 births
- 2000s
2000s
12 births
- 2010s 5
2010s
5 births
- 2020s
2020s
11 births
What this shows Peak: 1950s at 23 births (34% of all-time use).
Frequently Asked Questions
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When was Costello most popular? ▼
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What to do with Costello's data
- Costello's usage has stayed within range of its 1950s decade-level peak (23 total births) through the 2020s (11) -- a comparatively stable name, not a fading trend.
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Costello
Nearby Names Like Costello
Names with a similar sound, spelling, or feel to Costello
Compare Costello side by side: Costello vs Cosmo Costello vs Cosme Costello vs Cosimo
Related Names
Names with a similar popularity rank to Costello
Nationwide names with similar peak year or record span
Two nationwide peer axes for Costello: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1951)
Similar record span (~83 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, 1942–2025 (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 Costello 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.