Callahan
A masculine given name of Irish origin meaning "bright-headed".
Name Census estimates that about 5,299 living Americans carry the first name Callahan. It sits at #363 in the overall ranking, outside the top 50 but still well-represented. It appears on both sides of the gender split, with 83.5% of registrations being male. The average person named Callahan today is around 9 years old, and the year with the single highest number of Callahan births was 2024 (991 babies).
This page is the full Name Census profile for Callahan. 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.
For a British comparison, Name Census UK has a UK baby-name profile for Callahan with official rankings and popularity over time.
Key insights
- • Callahan is a relatively new arrival in the SSA data. The average bearer is just 9 years old, meaning it gained most of its traction in the last two decades.
People living today
5.3K
~ 1 in 64,683 Americans
Peak year
2024
991 babies that year
Average age
9
years old
2024 SSA rank
#363
Tracked since 1983
Census
Callahan in the 2020 Census
The 2020 Census recorded 2,152 people with the first name Callahan, which placed it at #7,167 in the published first-name tables. This is a snapshot of people who already had the name at the time of the Census.
The SSA sections elsewhere on this page answer a different question: how often parents gave the name to babies over time. The "people living today" figure on this page is different again: it is a current estimate built from SSA birth records and age-based survival rates, so the two numbers are not expected to match exactly.
2020 Census rank
#7,167
National first-name rank
People counted
2.2K
2,152 in the published race/origin table
Per 100,000
0.7
People with this name in 2020
Largest reported group
White
90.0% of people with this name
Demographics
Ancestry and ethnicity for Callahan
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Callahan is White at 90.0%. The next largest groups are Hispanic (4.3%) and Two or More Races (4.2%). These figures describe the people who had the name in 2020, not any inherent property of the name itself.
The bar chart below shows how people with the first name Callahan described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given name, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown so the breakdown is easy to read across every published category. Because the 2020 Census first-name file also includes raw headcounts for each group, Name Census can show those alongside the percentages in the legend and hover tooltip.
Keep in mind that these are self-reported numbers. A first name does not determine a person's race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the name Callahan at the time of the 2020 Census, not any inherent property of the name itself.
- White90.0% · 1,936
- Hispanic or Latino4.3% · 93
- Two or more races4.2% · 91
- Asian and Pacific Islander0.7% · 15
- Black or African American0.6% · 12
- American Indian and Alaska Native0.2% · 5
Gender
Gender distribution for Callahan
Callahan leans heavily male at 83.5% of total registrations, but 884 girls have also been registered with the name over the years, giving it a small but present crossover presence.
Callahan as a male name
- Ranked #363 in 2024
- 907 male births in 2024
- Peak: 2024 (907 births)
Callahan as a female name
- Ranked #2,233 in 2024
- 84 female births in 2024
- Peak: 2024 (84 births)
2020 Census snapshot
The 2020 Census sex table shows Callahan on both sides of the split. Of the 2,150 people counted with this name, 1,593 were male (74.1%) and 557 were female (25.9%).
Popularity
Callahan: popularity over time
The SSA tracks Callahan from the 1980s through to the 2020s, spanning 5 decades of birth certificate data. The biggest single decade for the name was the 2020s, with 3,157 total registrations. The name continues to be given at rates close to its all-time high, suggesting it has not yet fallen out of fashion.
Babies born per year
Decades
Callahan 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 Callahan during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Callahans live
The SSA's state-level files cover 43 states and territories. Texas, California, Ohio recorded the most babies named Callahan, while West Virginia, Rhode Island, Connecticut recorded the fewest. The average across all reporting states is about 78 registrations each.
Origin
Meaning and history of Callahan
The name Callahan originates from the Irish Gaelic language and culture, specifically from the word 'O'Callaghan', which means 'descendant of Callaghan'. The name Callaghan is derived from the Irish words 'calla' meaning 'battle' and 'ghan' meaning 'valor' or 'green branch'. Thus, the name Callahan essentially means 'brave in battle' or 'descendant of the green branch'.
The name has its roots in ancient Ireland, and it is believed to have first appeared in the 10th century AD. The Callahans were a prominent clan in County Cork, Ireland, and they were known for their valor and military prowess. The name was widely used by members of this clan and their descendants.
One of the earliest recorded instances of the name Callahan can be found in the Annals of Inisfallen, which is a chronicle of medieval Irish history. It mentions a chieftain named Callahan mac Cinneidigh, who lived in the 11th century.
Throughout history, there have been several notable individuals who bore the name Callahan. One of the most famous was Daniel Callahan (1904-1986), an American philosopher and ethicist who made significant contributions to the field of bioethics. Another notable Callahan was John Callahan (1951-2010), an American cartoonist known for his dark and irreverent humor.
Other notable individuals with the name Callahan include John Callahan (1833-1912), an American Civil War veteran and recipient of the Medal of Honor; Michael Callahan (1945-2016), an American basketball player who played in the NBA; and Connie Callahan (1929-2020), an American singer and actress who performed on Broadway.
The name Callahan has also been used in literature and popular culture. For example, in the novel 'The Big Sleep' by Raymond Chandler, one of the main characters is named Eddie Callahan. Additionally, in the television series 'Scrubs', one of the recurring characters is named Callahan.
People
Callahan + last name combinations
How many people share a full name with Callahan 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
Callahan: questions and answers
How many people in the U.S. are named Callahan?
Name Census puts the figure at roughly 5,299 living Americans. We arrive at this by taking every SSA birth registration for Callahan 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 64,683 US residents.
Is Callahan a common name?
We classify Callahan as "Rare". It ranks above 96.7% of all first names in the SSA dataset by living bearers. Across the full history of the data, 5,345 babies have been registered with this name.
When was Callahan most popular?
The single biggest year for Callahan was 2024, when 991 babies received the name. The fact that the average living Callahan is about 9 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
How common was Callahan in the 2020 Census?
The published 2020 Census first-name tables recorded 2,152 people with the name Callahan, or 0.71 per 100,000 residents. That placed it at #7,167 in the national Census ranking for first names.
Why is the Census count different from the living estimate?
Because they measure different things. The Census figure is a count of people who had the name Callahan in 2020. The living estimate aims to answer a current question instead: how many people with the name are alive today, based on SSA birth records and age-based survival rates. Since one number is a 2020 snapshot and the other is a present-day estimate, they are not expected to be identical.
What does the Census say about the gender split for Callahan?
The 2020 Census sex table shows Callahan on both sides of the split. Of the 2,150 people counted with this name, 1,593 were male (74.1%) and 557 were female (25.9%). The Census view is a snapshot of people living with the name in 2020, while the SSA section above tracks births across time.
What does the Census say about the background of people named Callahan?
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Callahan is White at 90.0%. The next largest groups are Hispanic (4.3%) and Two or More Races (4.2%). These figures describe the people who had the name in 2020, not any inherent property of the name itself. The percentages in the chart above come from self-reported race and Hispanic-origin responses in the 2020 Census.
Which group reports the name Callahan most often in the Census?
White is the largest reported group for people named Callahan in the 2020 Census, accounting for 90.0% (1,936 people in the published table).
Why can the Census sex total and race total differ slightly?
The Census Bureau published separate 2020 tables for sex and for race/Hispanic origin, and the released figures can differ slightly because of privacy protection in the public files. That is why this page treats the gender section and the race/origin section as two related snapshots instead of forcing them into one identical total.
Does every first name have Census demographic data?
No. The public Census first-name release only includes names that met the Bureau's publication rules, so many rarer names in the SSA files have no Census demographic snapshot. When that happens, the SSA trend, gender history, and state sections still appear, but the 2020 Census demographic sections are omitted.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Callahan in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Callahan a male name?
Yes, 83.5% of people registered as Callahan 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.
Is Callahan still being used today?
Yes. The SSA still recorded Callahan in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Callahan can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
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.
How many Americans are named Callahan?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.