How Many People Are Named Isaih?
An estimated 1,352 people in the United States have the first name Isaih. It is almost exclusively a male name. The average bearer is 25 years old, and Isaih peaked in popularity in 1999 with 74 births that year.
Below you will find a full statistical profile of Isaih as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Isaih paired with any surname.
Estimated Living Americans
1,352
About 1 in 253,517 people in the U.S.
Rarity
Rare
Predicted Gender
Male
100.0% confidence
Average Age
25
years old
Peak Year
1999
74 births
Total Registered
1,503
since 1880
Gender Distribution for Isaih
Isaih is almost exclusively a male name. Out of 1,503 total births registered, 100.0% were male.
Isaih as a male name
Ranked #8,498 in 2023
9 male births in 2023
Peak: 1999 (74 births)
Isaih: Popularity Over Time
SSA records for Isaih span from the 1890s to the 2020s, covering 12 decades of naming data. The most popular decade for this name was the 2000s, when 583 babies were registered. Isaih has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Isaih by Decade
How has Isaih tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Isaih by State
Birth registrations for Isaih span all 7 states and territories in the SSA database. The highest counts are in Texas, California, New York. The lowest are in Ohio, Pennsylvania, Illinois. On average, about 56 Isaihs were registered per state.
Isaih + Last Name Combinations
How many people share a full name with Isaih as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Isaih
Other first names starting with I with a similar number of bearers.
Isaih: Questions and Answers
How many people in the U.S. are named Isaih?
We estimate approximately 1,352 people named Isaih are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 253,517 Americans share this first name.
Is Isaih a common name?
Isaih is classified as "Rare" and is more popular than 91.9% of all first names in the SSA database. A total of 1,503 births have been registered with this name since 1880.
When was Isaih most popular?
Isaih reached peak popularity in 1999, when 74 babies were given this name. The average age of a living person named Isaih is approximately 25 years old, reflecting when the name was most commonly given.
Is Isaih a male name?
Isaih is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Isaih Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Isaih Smith, Isaih Johnson, Isaih Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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