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2025 data, released 8 May 2026

2025 data, released 8 May 2026

Casimer

Casimer was not among the names given to 5 or more boys in 2025. Its best year was 1917, when it ranked 510th; the most babies were born in 1918 (135). More babies were named Casimer in the 1910s than in any other decade.

Meaning Not yet researched how we research meanings

Rank in 2025
Not rankedboys
Babies in 2025
0boys
Girls and boys
No babies recorded in the last five years2021–2025
Peak year
1918135 babies
Total since 1880
1,895babies recorded

Casimer popularity since 1880

050100150200 1900192019401960198020002020
Boys Babies per year, US, from Social Security records. Years with fewer than 5 babies show as zero.
YearRank (boys)Babies (boys)
2025——
2020——
2010——
2000——
1990——
1980#5,6196
1970——
1960——
1950#1,75318
1940——
1930#1,46725
1920#593111
1910#68219
1900#9149
1890——
1880——

How popular is Casimer, counting every spelling?

Casimer has no other common spelling that sounds the same.

How old are people named Casimer?

About 200 people born in the US named Casimer are alive today, with a median age of 75; half are between 68 and 81. That makes Casimer a name most people associate with older generations.

0–910–1920–2930–3940–4950–5960–6970–7980–8990+
Estimated people alive in the US with the name, by age, mid-2026. The darker bar holds the median age.

Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.

Casimer by state

How common Casimer was among boys born in each state in 1916–1920, around its peak. It is notably more common than nationally in Michigan (4.8×), Illinois (3.9×), Connecticut (3.0×), New Jersey (2.2×), New York (2.2×). In 41 states fewer than five boys a year got the name, too few for SSA to publish, so those states show as zero.

Alaska: fewer than 5 a yearAK–Maine: fewer than 5 a yearME–Wisconsin: 0.10 per 1,000 babiesWI0.10Vermont: fewer than 5 a yearVT–New Hampshire: fewer than 5 a yearNH–Washington: fewer than 5 a yearWA–Idaho: fewer than 5 a yearID–Montana: fewer than 5 a yearMT–North Dakota: fewer than 5 a yearND–Minnesota: fewer than 5 a yearMN–Illinois: 0.46 per 1,000 babiesIL0.46Michigan: 0.56 per 1,000 babiesMI0.56New York: 0.26 per 1,000 babiesNY0.26Massachusetts: 0.08 per 1,000 babiesMA0.08Oregon: fewer than 5 a yearOR–Nevada: fewer than 5 a yearNV–Wyoming: fewer than 5 a yearWY–South Dakota: fewer than 5 a yearSD–Iowa: fewer than 5 a yearIA–Indiana: 0.04 per 1,000 babiesIN0.04Ohio: 0.22 per 1,000 babiesOH0.22Pennsylvania: 0.14 per 1,000 babiesPA0.14New Jersey: 0.26 per 1,000 babiesNJ0.26Connecticut: 0.36 per 1,000 babiesCT0.36Rhode Island: fewer than 5 a yearRI–California: fewer than 5 a yearCA–Utah: fewer than 5 a yearUT–Colorado: fewer than 5 a yearCO–Nebraska: fewer than 5 a yearNE–Missouri: fewer than 5 a yearMO–Kentucky: fewer than 5 a yearKY–West Virginia: fewer than 5 a yearWV–Virginia: fewer than 5 a yearVA–Maryland: fewer than 5 a yearMD–Delaware: fewer than 5 a yearDE–Arizona: fewer than 5 a yearAZ–New Mexico: fewer than 5 a yearNM–Kansas: fewer than 5 a yearKS–Arkansas: fewer than 5 a yearAR–Tennessee: fewer than 5 a yearTN–North Carolina: fewer than 5 a yearNC–South Carolina: fewer than 5 a yearSC–District of Columbia: fewer than 5 a yearDC–Oklahoma: fewer than 5 a yearOK–Louisiana: fewer than 5 a yearLA–Mississippi: fewer than 5 a yearMS–Alabama: fewer than 5 a yearAL–Georgia: fewer than 5 a yearGA–Hawaii: fewer than 5 a yearHI–Texas: fewer than 5 a yearTX–Florida: fewer than 5 a yearFL–
Babies per 1,000 of the same sex, Casimer, boys, 1916–1920. Darker means more common.

Names with a similar history

These names rose and fell in step with Casimer: their share of US boys followed the most similar curve since 1880. If you like Casimer, they share its era and feel.

Questions about the name Casimer

How popular is the name Casimer?

Casimer was not among the names given to 5 or more boys in 2025. Its best year was 1917, when it ranked 510th; the most babies were born in 1918 (135). More babies were named Casimer in the 1910s than in any other decade.

Is Casimer a boy or girl name?

No babies were given the name in 2021–2025. Historically it was given to 0 girls and 1,895 boys.

Where was Casimer most popular?

In 1916–1920, Casimer was most common in Michigan (0.56 per 1,000 boys), followed by Illinois and Connecticut.