How Many People Are Named Zelphia?
An estimated 72 people in the United States have the first name Zelphia. It is almost exclusively a female name. The average bearer is 74 years old, and Zelphia peaked in popularity in 1921 with 19 births that year.
Below you will find a full statistical profile of Zelphia 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 Zelphia paired with any surname.
Key Insights
- With an average bearer age of 74, Zelphia is a vintage name most associated with earlier generations. Most living bearers were born before 1962.
- Zelphia is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
72
About 1 in 4,760,477 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
74
years old
Peak Year
1921
19 births
Total Registered
414
since 1880
Gender Distribution for Zelphia
Zelphia is almost exclusively a female name. Out of 414 total births registered, 100.0% were female.
Zelphia as a female name
Ranked #5,057 in 1970
11 female births in 1970
Peak: 1921 (19 births)
Zelphia: Popularity Over Time
SSA records for Zelphia span from the 1880s to the 1970s, covering 10 decades of naming data. The most popular decade for this name was the 1920s, when 126 babies were registered. Zelphia has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Zelphia by Decade
How has Zelphia 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.
Zelphia by State
Zelphia + Last Name Combinations
How many people share a full name with Zelphia as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Zelphia
Other first names starting with Z with a similar number of bearers.
Zelphia: Questions and Answers
How many people in the U.S. are named Zelphia?
We estimate approximately 72 people named Zelphia 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 4,760,477 Americans share this first name.
Is Zelphia a common name?
Zelphia is classified as "Very Rare" and is more popular than 59.7% of all first names in the SSA database. A total of 414 births have been registered with this name since 1880.
When was Zelphia most popular?
Zelphia reached peak popularity in 1921, when 19 babies were given this name. The average age of a living person named Zelphia is approximately 74 years old, reflecting when the name was most commonly given.
Is Zelphia a female name?
Zelphia is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Zelphia Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Zelphia Smith, Zelphia Johnson, Zelphia 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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