How Many People Are Named Hillis?
An estimated 83 people in the United States have the first name Hillis. It is predominantly male (96.9%). The average bearer is 80 years old, and Hillis peaked in popularity in 1918 with 19 births that year.
Below you will find a full statistical profile of Hillis 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 Hillis paired with any surname.
Key Insights
- With an average bearer age of 80, Hillis is a vintage name most associated with earlier generations. Most living bearers were born before 1956.
- Hillis is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
83
About 1 in 4,129,570 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
96.9% confidence
Average Age
80
years old
Peak Year
1918
19 births
Total Registered
421
since 1880
Gender Distribution for Hillis
Hillis is predominantly male (96.9%), though 13 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Hillis as a male name
Ranked #7,131 in 1986
5 male births in 1986
Peak: 1919 (16 births)
Hillis as a female name
Ranked #3,696 in 1927
8 female births in 1927
Peak: 1927 (8 births)
Hillis: Popularity Over Time
SSA records for Hillis span from the 1910s to the 1980s, covering 8 decades of naming data. The most popular decade for this name was the 1920s, when 140 babies were registered. Hillis has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Hillis by Decade
How has Hillis 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.
Hillis + Last Name Combinations
How many people share a full name with Hillis as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Hillis
Other first names starting with H with a similar number of bearers.
Hillis: Questions and Answers
How many people in the U.S. are named Hillis?
We estimate approximately 83 people named Hillis 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 4,129,570 Americans share this first name.
Is Hillis a common name?
Hillis is classified as "Very Rare" and is more popular than 61.8% of all first names in the SSA database. A total of 421 births have been registered with this name since 1880.
When was Hillis most popular?
Hillis reached peak popularity in 1918, when 19 babies were given this name. The average age of a living person named Hillis is approximately 80 years old, reflecting when the name was most commonly given.
Is Hillis a male name?
Hillis is predominantly male. 96.9% of people with this name are male. See the gender breakdown above for full details.
How many Hillis Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Hillis Smith, Hillis Johnson, Hillis 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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