How Many People Are Named Dia?
An estimated 2,189 people in the United States have the first name Dia. It is predominantly female (95.0%). The average bearer is 31 years old, and Dia peaked in popularity in 2015 with 62 births that year.
Below you will find a full statistical profile of Dia 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 Dia paired with any surname.
Estimated Living Americans
2,189
About 1 in 156,580 people in the U.S.
Rarity
Rare
Predicted Gender
Female
95.0% confidence
Average Age
31
years old
Peak Year
2015
62 births
Total Registered
2,333
since 1880
Gender Distribution for Dia
Dia is predominantly female (95.0%), though 117 male births have been registered. It functions as a unisex name for a small percentage of bearers.
Dia as a male name
Ranked #12,740 in 2024
5 male births in 2024
Peak: 1972 (14 births)
Dia as a female name
Ranked #4,123 in 2024
35 female births in 2024
Peak: 2015 (62 births)
Dia: Popularity Over Time
SSA records for Dia span from the 1940s to the 2020s, covering 9 decades of naming data. The most popular decade for this name was the 2010s, when 500 babies were registered. While Dia is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Dia by Decade
How has Dia 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.
Dia by State
Birth registrations for Dia span all 12 states and territories in the SSA database. The highest counts are in California, Texas, New York. The lowest are in North Carolina, Florida, Minnesota. On average, about 35 Dias were registered per state.
Dia + Last Name Combinations
How many people share a full name with Dia as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Dia
Other first names starting with D with a similar number of bearers.
Dia: Questions and Answers
How many people in the U.S. are named Dia?
We estimate approximately 2,189 people named Dia 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 156,580 Americans share this first name.
Is Dia a common name?
Dia is classified as "Rare" and is more popular than 94.1% of all first names in the SSA database. A total of 2,333 births have been registered with this name since 1880.
When was Dia most popular?
Dia reached peak popularity in 2015, when 62 babies were given this name. The average age of a living person named Dia is approximately 31 years old, reflecting when the name was most commonly given.
Is Dia a female name?
Dia is predominantly female. 95.0% of people with this name are female. See the gender breakdown above for full details.
How many Dia Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Dia Smith, Dia Johnson, Dia 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.
Search for a full name combination
How Many of Me