Boys' name · since 1910

Cosmo

Since 1910, U.S. Social Security records show 2,949 babies named Cosmo, peaking in 2022. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.

#2,564 of 45,481
all-time among boys
#1,935 of 13,930
2025 SSA year
2,949
born since 1910
2020s
peak decade

2,949 babies have been named Cosmo since 1910, making it today's #1935 boys' name.

According to the U.S. Social Security Administration, Cosmo has been recorded 2,949 times among boys since 1910, currently ranked #1935 nationally and more common than 86% of boys, with its heaviest use in the 2020s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1910 to 2025.

  • #2,564 of 45,481 all-time among boys
  • #1,935 of 13,930 2025 SSA year
  • 2,949 born since 1910
  • 2020s peak decade

Data updated Aug 2026

The verdict

According to the U.S. Social Security Administration, Cosmo ranks #2,564 of 45,481 boys' names by all-time recorded births (highest first) and #1,935 of 13,930 among boys' names in 2025. 2,949 born since 1910, peaking in the 2020s.

#2,564 of 45,481
all-time among boys
#1,935 of 13,930
2025 SSA year
2,949
born since 1910
2020s
peak decade
0%100%Median name50%86.1%
Cosmo vs. every other boys name in current SSA rankings
Above the archive median
All-time archive position

Cosmo's 2,949 recorded births place it above 94.36% of the 45,481 boys names in the full SSA archive.

14 jurisdictions
State-record footprint

14 jurisdictions carry state-level records, led by New York.

How Cosmo compares

2,949 Top 18% higher than 82% of 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

Cosmo's all-time total is 8x the median boys name, and Liam still leads by a wide margin.

Metric Cosmo Median boys name (Takari) #1 boys name (Liam)
All-time total births 2,949 369 358,536
Peak-year births 99 34 22,252

Cosmo's usage pattern, beyond the headline number

Cosmo splits its recorded history at 1968: 50% of all births land in the more recent half, 50% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1910 (6 births) -- compare that against the 2022 peak of 99 for a sense of just how much the name's popularity has swung.

Cosmo popularity over time - boys

Annual U.S. births registered with the Social Security Administration · 1910–2025

Outside the top 1,000
Peak year (2022)
99
Annual births at peak, across 116 years of records
050100150 191019251940195519701985200020152025 80

Cosmo popularity over time - girls

6 total births recorded since 2022 (Cosmo as girls' name)

Unisex variant - 6 births
6 2022 6

Cosmo by decade

2020s is the heaviest window (510 births, 17% of the file).

2020s was Cosmo's strongest decade.

510 babies received the name during that ten-year window, about 17% of all-time use.

Cosmo births by decade

Total births in each ten-year window

births

What this shows Peak: 2020s at 510 births (17% of all-time use).

Source U.S. Social Security Administration · Baby Names As of August 2026

How Cosmo compares to similarly-sized names

Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Cosmo's total volume

Cosmo vs 15 similarly-sized boys names Scatter plot of 16 data points. 0%2%4%6%8% 050100150200 New & already peakedOld name, single-era peakNew & still diversifyingLong history, steady all along Years in SSA records % of total births in the single peak year -48, 5.3%-46, 6.5%-145, 2%-114, 3.9%-146, 4.9%-117, 1.5%-113, 4.4%-113, 2%-105, 2.2%-144, 2.4%-113, 3.8%-146, 2.3%-146, 6.1%-145, 3.4%-76, 3.2%Cosmo-116, 3.4%Cosmo
Cosmo vs 15 similarly-sized boys names

Cosmo by state

Where Cosmo concentrates geographically, total births since 1910

Regionally concentrated
Top 8 states by recorded births for the name Cosmo
Rank State Visual share Births Share of total
#1 New York
685 23.2%
#2 California
195 6.6%
#3 Massachusetts
99 3.4%
#4 New Jersey
72 2.4%
#5 Pennsylvania
70 2.4%
#6 Texas
25 0.8%
#7 Florida
16 0.5%
#8 Washington
15 0.5%
New York share of Cosmo's total US births 23.2%
Even split

685 of 2,949 births nationwide. Compared to a flat distribution across 14 reporting states.

Cosmo appears in 14 states. Explore state details →

Frequently Asked Questions

How popular is the name Cosmo? ▼
Cosmo has been given to 2,949 babies in the U.S. since 1910, according to SSA data. Its archive ordinal is #2,564 of 45,481 among boys' names (total births, highest first). Among boys in 2025, it is #1,935 of 13,930. 99 babies were born in 2022, its single highest year.
Where does Cosmo sit in the SSA name archive? ▼
According to the U.S. Social Security Administration, Cosmo ranks #2,564 of 45,481 boys' names by all-time recorded births (highest first) and #1,935 of 13,930 among boys' names in 2025. All-time ordinal matches browse popularity (total births DESC); the current ordinal uses the 2025 SSA file. See /methodology#corpus-placement.
When was Cosmo most popular? ▼
Cosmo was most popular in the 2020s decade with 510 total births. The single peak year was 2022.
Where is Cosmo most popular? ▼
The top states for the name Cosmo are New York (685 births), California (195 births), Massachusetts (99 births).
How long has the name Cosmo been used? ▼
The SSA has tracked Cosmo since 1910 -- 116 years through the most recent 2025 data.
What names are similar to Cosmo? ▼
Names with a similar sound or spelling include Cosme, Cosimo, Costa, Costas, and 4 more. These share a common prefix and are also used for boys.

What to do with Cosmo's data

  • New York records the most Cosmos (685 births) -- see the full state breakdown if geography matters to your decision. New York names

Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.

Keep exploring Cosmo

Nearby Names Like Cosmo

Names with a similar sound, spelling, or feel to Cosmo

Cosme Boy
#6832 1,373 births
Cosimo Boy
#5626 1,016 births
Costa Boy
#6847 337 births
Costas Boy
285 births
Cosby Boy
212 births

Compare Cosmo side by side: Cosmo vs Cosme Cosmo vs Cosimo Cosmo vs Costa

Or pick any two names to compare →

Related Names

Names with a similar popularity rank to Cosmo

Jacques #1934
9,734 births · Peak 1969
Rockwell #1936
1,801 births · Peak 2017
Irvin #1933
39,922 births · Peak 1923
Aj #1937
2,456 births · Peak 2012
Fred #1932
343,655 births · Peak 1924
Cristofer #1938
4,323 births · Peak 2008
Kaisyn #1931
855 births · Peak 2024
Kolbe #1939
1,825 births · Peak 2001

Nationwide names with similar peak year or record span

Two nationwide peer axes for Cosmo: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.

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, 1910–2025 (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 Cosmo 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.