Cosmo: Name Popularity, History & Rankings (1880

Rank 2025

#1,934

among boys · ↓246 vs 2024

Babies in 2025

named Cosmo · -19% vs 2024

How common

1 in 21,351

boys born in 2025

Peak year

2022

105 babies

All-time total

2,955

#2,564 all-time among boys

First recorded

1910

in Social Security records

Cosmo popularity over time

2,955 babies have been named Cosmo since 1910, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure

Births per 1,000 babies of that sex, comparable across eras

BoysGirls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade	Girls	Boys	Total	Per year	Change	Best rank
1880s	–	–	–	–	–	–
1890s	–	–	–	–	–	–
1900s	–	–	–	–	–	–
1910s	–	254	254	25	–	#933
1920s	–	452	452	45	+78%	#954
1930s	–	286	286	29	-37%	#1,119
1940s	–	191	191	19	-33%	#1,237
1950s	–	191	191	19	0%	#1,488
1960s	–	121	121	12	-37%	#1,981
1970s	–	128	128	13	+6%	#2,009
1980s	–	108	108	11	-16%	#2,729
1990s	–	172	172	17	+59%	#2,701
2000s	–	254	254	25	+48%	#2,670
2010s	–	282	282	28	+11%	#2,631
2020s (to 2025)	6	510	516	86	+205%	#1,688

Where Cosmo is heading

A five-year projection from the recent trend in births per 1,000 boys (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year	Projected babies	Per 1,000 boys	Implied rank
2026	89	0.05	outside top 500
2027	97	0.06	outside top 500
2028	105	0.06	outside top 500
2029	112	0.07	outside top 500
2030	118	0.07	outside top 500

Where Cosmo is most popular

Boys named Cosmo per 1,000 boys born in each state, 2021–2025. National average: 0.052 per 1,000. Strongest in New York, California, and Oregon.

Vs national average

well below below near national above well above no data

All 50 states and DC, sorted by rate. Counts are boys named Cosmo born 2021–2025; the per-1,000 rate makes states of different sizes comparable, and the last column shows each state against the national average.

State	Boys 2021–2025	Per 1,000	vs national
New York	40	0.092	+77%
California	78	0.085	+64%
Oregon	6	0.079	+52%
Washington	10	0.061	+17%
Oklahoma	5	0.057	+8%
Pennsylvania	11	0.041	-20%
Florida	16	0.034	-35%
Tennessee	5	0.028	-47%
Texas	20	0.023	-56%
Ohio	6	0.023	-57%
Alaska	–	–	–
Alabama	–	–	–
Arkansas	–	–	–
Arizona	–	–	–
Colorado	–	–	–
Connecticut	–	–	–
District of Columbia	–	–	–
Delaware	–	–	–
Georgia	–	–	–
Hawaii	–	–	–
Iowa	–	–	–
Idaho	–	–	–
Illinois	–	–	–
Indiana	–	–	–
Kansas	–	–	–
Kentucky	–	–	–
Louisiana	–	–	–
Massachusetts	–	–	–
Maryland	–	–	–
Maine	–	–	–
Michigan	–	–	–
Minnesota	–	–	–
Missouri	–	–	–
Mississippi	–	–	–
Montana	–	–	–
North Carolina	–	–	–
North Dakota	–	–	–
Nebraska	–	–	–
New Hampshire	–	–	–
New Jersey	–	–	–
New Mexico	–	–	–
Nevada	–	–	–
Rhode Island	–	–	–
South Carolina	–	–	–
South Dakota	–	–	–
Utah	–	–	–
Virginia	–	–	–
Vermont	–	–	–
Wisconsin	–	–	–
West Virginia	–	–	–
Wyoming	–	–	–

State counts come from the Social Security Administration's state files, which omit any state-year with fewer than five babies of a name, so small states can undercount slightly.

The story of Cosmo

Cosmo is rare for boys in the United States, ranked #1,934 in 2025 with 80 babies given the name. It is currently rising compared with a decade ago.

Since 1910, 2,955 American babies have been named Cosmo. Its peak came in 2022, when 105 newborns received the name, the signature sound of the 2020s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Cosmo stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Cosmo?

The median living Cosmo is about 20 years old; half are between 5 and 51. An estimated 1,800 people named Cosmo are alive in the United States today.

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Cosmo year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year	Girls	Girls rank	Boys	Boys rank
2025	–	–	80	#1,934
2024	–	–	99	#1,688
2023	–	–	94	#1,749
2022	6	#13,984	99	#1,708
2021	–	–	78	#1,933
2020	–	–	60	#2,271
2019	–	–	49	#2,631
2018	–	–	41	#2,903
2017	–	–	42	#2,848
2016	–	–	21	#4,652
2015	–	–	32	#3,444
2014	–	–	14	#6,054
2013	–	–	20	#4,651
2012	–	–	16	#5,522
2011	–	–	22	#4,393
2010	–	–	25	#4,013
2009	–	–	18	#5,138
2008	–	–	22	#4,424
2007	–	–	19	#4,843
2006	–	–	33	#3,234
2005	–	–	41	#2,670
2004	–	–	26	#3,548
2003	–	–	22	#3,863
2002	–	–	29	#3,122
2001	–	–	22	#3,736
2000	–	–	22	#3,658
1995	–	–	16	#3,893
1990	–	–	12	#4,453
1985	–	–	11	#3,843
1980	–	–	6	#5,661
1975	–	–	10	#3,487
1970	–	–	20	#2,009
1965	–	–	8	#3,030
1960	–	–	17	#1,981
1955	–	–	15	#2,067
1950	–	–	16	#1,896
1945	–	–	8	#2,605
1940	–	–	11	#2,210
1935	–	–	26	#1,333
1930	–	–	39	#1,119
1925	–	–	50	#959
1920	–	–	40	#1,123
1915	–	–	31	#1,164
1910	–	–	6	#1,461
1905	–	–	–	–
1900	–	–	–	–
1895	–	–	–	–
1890	–	–	–	–
1885	–	–	–	–
1880	–	–	–	–

Frequently asked questions

Quick answers about Cosmo, drawn from the same Social Security data as the charts above.

How old is the average Cosmo?

The median living Cosmo is about 20 years old. Half of all living Cosmos are between 5 and 51 years old.

How many people named Cosmo are alive today?

An estimated 1,800 people named Cosmo are alive in the United States, based on 2,955 recorded births and Social Security life tables.

What does the name Cosmo mean?

Borrowed by Scotland from Italy in the 18th century.

How popular is the name Cosmo in 2025?

Cosmo ranked #1,934 among boys' names in the United States in 2025, with 80 babies given the name, according to Social Security Administration data.

How many people are named Cosmo?

2,955 babies have been named Cosmo in the United States since 1910, based on Social Security card applications.

When was the name Cosmo most popular?

Cosmo peaked in 2022, when 105 newborns received the name.

Is Cosmo a boy or girl name?

Cosmo is overwhelmingly a boy's name: 100% of babies with the name.

Is the name Cosmo rising or falling?

Cosmo is on the rise, noticeably more popular now than a decade ago.

Will Cosmo become more popular?

Cosmo is trending upward. If the recent trend holds, we project roughly 118 boys named Cosmo in 2030, which would rank outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Names like Cosmo

Names that sound and feel close to Cosmo: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Cosmo with similar names → More names starting with C →