Casmer
A variant of the Polish name Kazimierz, derived from elements meaning "to destroy" and "peace".
Name Census estimates that about 6 living Americans carry the first name Casmer. The name is used almost exclusively for boys. The average person named Casmer today is around 111 years old, and the year with the single highest number of Casmer births was 1918 (30 babies).
This page is the full Name Census profile for Casmer. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
Key insights
- • The typical person named Casmer is about 111 years old today, placing it firmly among the names of earlier generations. Most living Casmers were born before 1925.
- • Fewer than 100 living Americans are believed to carry the name Casmer. It is among the rarest names in the SSA records.
People living today
6
~ 1 in 57,125,723 Americans
Peak year
1918
30 babies that year
Average age
111
years old
1933 SSA rank
#3,720
Tracked since 1911
Popularity
Casmer: popularity over time
The SSA tracks Casmer from the 1910s through to the 1930s, spanning 3 decades of birth certificate data. The biggest single decade for the name was the 1910s, with 161 total registrations. Usage has dropped considerably from its 1910s peak. The most recent decade brought in only a fraction of the registrations that the name once attracted.
Babies born per year
Decades
Casmer by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Casmer during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Casmers live
The SSA's state-level files cover 5 states and territories. Michigan, Pennsylvania, Ohio recorded the most babies named Casmer, while New York, Illinois, Ohio recorded the fewest. The average across all reporting states is about 18 registrations each.
Origin
Meaning and history of Casmer
The given name Casmer originated from the Polish name Kazimierz, which has its roots in the Slavic languages. The name is derived from the old Slavic words "kazit" meaning "to destroy" and "mir" meaning "peace" or "world". It was likely initially given as a name with the intended meaning of "destroyer of peace" or "destroyer of the world".
Historically, the name Casmer first gained prominence in Poland during the Middle Ages. One of the earliest recorded instances of the name was Casimir the Restorer, a Duke of Poland who reigned from 1034 to 1058. He was instrumental in restoring the Polish monarchy after a period of pagan uprisings and internal strife.
In the 13th century, Saint Casimir of Poland, a Polish prince and heir to the throne, was venerated for his piety and virtuous life. He became the patron saint of Poland and Lithuania, and the name Casmer gained popularity among Polish nobility and royalty.
Another notable historical figure bearing the name Casmer was Casimir III the Great, who ruled as the King of Poland from 1333 to 1370. He is remembered for his efforts to consolidate and strengthen the Polish kingdom, as well as his legal reforms and support for education.
In the 16th century, Casimir Jagiellon, a Prince of Poland and Grand Duke of Lithuania, played a significant role in the Polish-Lithuanian union and the development of the Polish-Lithuanian Commonwealth.
Moving forward in time, Casmir Pulaski, a Polish nobleman born in 1745, gained fame for his contributions to the American Revolutionary War. He fought alongside George Washington and was regarded as a skilled military leader and cavalry officer.
While the name Casmer has its origins in Poland and was historically associated with Polish nobility and royalty, it has also been adopted and used in various other cultures and languages over time. The name carries a rich historical legacy, reflecting the valor, leadership, and cultural significance of those who bore it throughout the centuries.
People
Casmer + last name combinations
How many people share a full name with Casmer as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with C
Other first names starting with C with a similar number of bearers.
FAQ
Casmer: questions and answers
How many people in the U.S. are named Casmer?
Name Census puts the figure at roughly 6 living Americans. We arrive at this by taking every SSA birth registration for Casmer going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 57,125,723 US residents.
Is Casmer a common name?
We classify Casmer as "Very Rare". It ranks above 22.3% of all first names in the SSA dataset by living bearers. Across the full history of the data, 255 babies have been registered with this name.
When was Casmer most popular?
The single biggest year for Casmer was 1918, when 30 babies received the name. The fact that the average living Casmer is about 111 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
Is Casmer a male name?
Yes, 100.0% of people registered as Casmer in the SSA data are male. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.