Isaia
Hebrew name meaning "Salvation of the Lord" or "Yahweh is salvation".
Name Census estimates that about 467 living Americans carry the first name Isaia. The name is used almost exclusively for boys. The average person named Isaia today is around 19 years old, and the year with the single highest number of Isaia births was 2007 (26 babies).
This page is the full Name Census profile for Isaia. 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 Isaia with official rankings and popularity over time.
People living today
467
~ 1 in 733,949 Americans
Peak year
2007
26 babies that year
Average age
19
years old
2024 SSA rank
#9,312
Tracked since 1985
Census
Isaia in the 2020 Census
The 2020 Census recorded 761 people with the first name Isaia, which placed it at #15,191 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
#15,191
National first-name rank
People counted
761
761 in the published race/origin table
Per 100,000
0.3
People with this name in 2020
Largest reported group
Hispanic or Latino
52.2% of people with this name
Demographics
Ancestry and ethnicity for Isaia
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Isaia is Hispanic at 52.2%. The next largest groups are White (16.0%) and Black (12.1%). 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 Isaia 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 Isaia at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino52.2% · 397
- White16.0% · 122
- Black or African American12.1% · 92
- Asian and Pacific Islander10.1% · 77
- Two or more races8.9% · 68
- American Indian and Alaska Native0.7% · 5
Popularity
Isaia: popularity over time
The SSA tracks Isaia from the 1980s through to the 2020s, spanning 5 decades of birth certificate data. The biggest single decade for the name was the 2000s, with 188 total registrations. Usage has dropped considerably from its 2000s peak. The most recent decade brought in only a fraction of the registrations that the name once attracted.
Babies born per year
Decades
Isaia 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 Isaia during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Isaias live
Origin
Meaning and history of Isaia
The name Isaia has its origins in the Hebrew language, derived from the biblical name Isaiah. The name Isaiah is derived from the Hebrew words "Yesha'yahu" or "Yeshayah," which translate to "Salvation of Yahweh" or "Yahweh is salvation." This name was borne by the Old Testament prophet Isaiah, whose book in the Bible contains prophecies about the coming of the Messiah.
Isaia is the Italian and Romanian form of the name Isaiah, and it has been used in these cultures for centuries. The earliest recorded use of the name Isaia can be traced back to the 13th century in Italy, where it was given to children as a nod to the biblical prophet.
One of the most famous historical figures named Isaia was Isaia da Pisa, an Italian mathematician and astronomer who lived in the 14th century. He is known for his contributions to the development of algebraic notation and for his work on the theory of proportions.
Another notable bearer of the name was Isaia Bicci, an Italian painter from the 15th century who was active in Florence and Siena. His works include frescoes and altarpieces, some of which can still be seen in churches and museums in Italy today.
In the 16th century, Isaia Porzio was an Italian philosopher and physician who wrote extensively on the philosophy of nature and the human soul. He was associated with the Aristotelian school of thought and was highly regarded in his time.
Moving into the 17th century, Isaia Mutio was an Italian Jesuit priest and missionary who spent many years working in the Far East, particularly in Japan and China. He is known for his contributions to the understanding of East Asian cultures and languages.
Lastly, in the 19th century, Isaia Gabai was an Italian Jewish scholar and rabbi who made significant contributions to the study of the Talmud and Jewish law. He served as the chief rabbi of Livorno, Italy, and was highly respected within the Italian Jewish community.
People
Isaia + last name combinations
How many people share a full name with Isaia as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with I
Other first names starting with I with a similar number of bearers.
FAQ
Isaia: questions and answers
How many people in the U.S. are named Isaia?
Name Census puts the figure at roughly 467 living Americans. We arrive at this by taking every SSA birth registration for Isaia 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 733,949 US residents.
Is Isaia a common name?
We classify Isaia as "Very Rare". It ranks above 83.9% of all first names in the SSA dataset by living bearers. Across the full history of the data, 473 babies have been registered with this name.
When was Isaia most popular?
The single biggest year for Isaia was 2007, when 26 babies received the name. The fact that the average living Isaia is about 19 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
How common was Isaia in the 2020 Census?
The published 2020 Census first-name tables recorded 761 people with the name Isaia, or 0.25 per 100,000 residents. That placed it at #15,191 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 Isaia 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 Isaia?
In the 2020 Census sex table, Isaia leans strongly male. 735 people counted with this name were male (97.1%), compared with 22 female bearers (2.9%). 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 Isaia?
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Isaia is Hispanic at 52.2%. The next largest groups are White (16.0%) and Black (12.1%). 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 Isaia most often in the Census?
Hispanic is the largest reported group for people named Isaia in the 2020 Census, accounting for 52.2% (397 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 Isaia in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Isaia a male name?
Yes, 100.0% of people registered as Isaia 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 Isaia still being used today?
Yes. The SSA still recorded Isaia 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 Isaia 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 people have the name Isaia?
If you just want to know how many Americans are named Isaia, HowManyOfMe.org gives you the headline number in one glance.