Baby Names US
Unisex name ★ peaked 1989

Cass

Gender Unisex · 7% girls Rank 2025 #5,068

A diminutive of the female given name Cassandra of medieval origin, later also used for Cassidy, Cassiopeia, and Catherine with its variant forms.

Rank 2025
#5,068
among boys · ↑208 vs 2024
Babies in 2025
19
named Cass
How common
1 in 89,899
boys born in 2025
Peak year
1989
43 babies
All-time total
1,993
#3,458 all-time among boys
First recorded
1881
in Social Security records

Cass popularity over time

1,993 babies have been named Cass since 1881, 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
0.020.040.060.0818801900192019401960198020002020BoysGirls
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 – 13 13 1 – #719
1890s – 6 6 1 -54% #962
1900s – 17 17 2 +183% #982
1910s – 79 79 8 +365% #1,447
1920s – 81 81 8 +3% #2,318
1930s – 43 43 4 -47% #2,688
1940s 7 89 96 10 +123% #1,771
1950s 25 170 195 20 +103% #1,630
1960s 18 222 240 24 +23% #1,211
1970s 36 197 233 23 -3% #1,530
1980s 21 242 263 26 +13% #1,771
1990s 16 184 200 20 -24% #2,148
2000s 5 162 167 17 -17% #4,181
2010s 5 221 226 23 +35% #3,547
2020s (to 2025) – 134 134 22 -1% #3,370

The story of Cass

Cass is rare for boys in the United States, ranked #5,068 in 2025 with 19 babies given the name. It is currently holding steady compared with a decade ago.

Since 1881, 1,993 American babies have been named Cass, about 93% boys and 7% girls, making it a genuinely unisex name. Its peak came in 1989, when 43 newborns received the name, the signature sound of the 1980s.

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 Cass stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Cass?

The median living Cass is about 38 years old; half are between 17 and 56. An estimated 1,600 people named Cass are alive in the United States today.

median 38 020406080100

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

Cass 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 – – 19 #5,068
2024 – – 18 #5,276
2023 – – 16 #5,699
2022 – – 23 #4,459
2021 – – 34 #3,370
2020 – – 24 #4,162
2019 – – 24 #4,248
2018 – – 20 #4,771
2017 5 #16,363 28 #3,789
2016 – – 29 #3,701
2015 – – 20 #4,744
2014 – – 23 #4,282
2013 – – 11 #7,112
2012 – – 12 #6,688
2011 – – 24 #4,126
2010 – – 30 #3,547
2009 – – 24 #4,181
2008 – – 20 #4,741
2007 – – 19 #4,835
2006 – – 14 #5,829
2005 – – 16 #5,074
2004 – – 16 #5,048
2003 5 #16,229 10 #6,804
2002 – – 13 #5,445
2001 – – 13 #5,425
2000 – – 17 #4,426
1995 5 #13,781 14 #4,310
1990 6 #11,635 29 #2,378
1985 – – 23 #2,304
1980 – – 14 #3,119
1975 – – 18 #2,377
1970 8 #5,880 26 #1,709
1965 – – 15 #2,100
1960 – – 42 #1,211
1955 – – 12 #2,321
1950 – – 12 #2,231
1945 – – 6 #3,034
1940 – – 6 #3,182
1935 – – 7 #3,002
1930 – – 5 #4,082
1925 – – 8 #3,189
1920 – – 6 #3,892
1915 – – 11 #2,331
1910 – – 6 #1,447
1905 – – – –
1900 – – 5 #1,347
1895 – – – –
1890 – – – –
1885 – – – –
1880 – – – –

Famous people named Cass

The most globally famous bearers of the name, ranked by fame across Wikipedia editions (Pantheon project, MIT).

  1. 1 Cass Elliot Cass Elliot American singer (1941–1974) Contemporary
  2. 2 Cass Gilbert Cass Gilbert American architect (1859–1934) 19th century

Portraits from Wikipedia (Wikimedia Commons).

Frequently asked questions

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

How old is the average Cass?

The median living Cass is about 38 years old. Half of all living Casss are between 17 and 56 years old.

How many people named Cass are alive today?

An estimated 1,600 people named Cass are alive in the United States, based on 1,993 recorded births and Social Security life tables.

What does the name Cass mean?

A diminutive of the female given name Cassandra of medieval origin, later also used for Cassidy, Cassiopeia, and Catherine with its variant forms.

How popular is the name Cass in 2025?

Cass ranked #5,068 among boys' names in the United States in 2025, with 19 babies given the name, according to Social Security Administration data.

How many people are named Cass?

1,993 babies have been named Cass in the United States since 1881, based on Social Security card applications.

When was the name Cass most popular?

Cass peaked in 1989, when 43 newborns received the name.

Is Cass a boy or girl name?

Cass is used for both: about 7% of babies named Cass have been girls and 93% boys.

Is the name Cass rising or falling?

Cass has been roughly stable over the past decade.

Who are famous people named Cass?

Well-known people named Cass include Cass Elliot (singer), Cass Gilbert (architect).

Names like Cass

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

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