How Many People Are Named Jaci?
An estimated 4,875 people in the United States have the first name Jaci. It is almost exclusively a female name. The average bearer is 26 years old, and Jaci peaked in popularity in 2005 with 221 births that year.
Below you will find a full statistical profile of Jaci 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 Jaci paired with any surname.
Estimated Living Americans
4,875
About 1 in 70,309 people in the U.S.
Rarity
Rare
Predicted Gender
Female
100.0% confidence
Average Age
26
years old
Peak Year
2005
221 births
Total Registered
5,096
since 1880
Gender Distribution for Jaci
Jaci is almost exclusively a female name. Out of 5,096 total births registered, 100.0% were female.
Jaci as a female name
Ranked #3,185 in 2024
50 female births in 2024
Peak: 2005 (221 births)
Jaci: Popularity Over Time
SSA records for Jaci span from the 1930s to the 2020s, covering 10 decades of naming data. The most popular decade for this name was the 2000s, when 1,703 babies were registered. Jaci has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Jaci by Decade
How has Jaci 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.
Jaci by State
Birth registrations for Jaci span all 27 states and territories in the SSA database. The highest counts are in Texas, Louisiana, Oklahoma. The lowest are in Washington, South Carolina, North Carolina. On average, about 89 Jacis were registered per state.
Jaci + Last Name Combinations
How many people share a full name with Jaci as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Jaci
Other first names starting with J with a similar number of bearers.
Jaci: Questions and Answers
How many people in the U.S. are named Jaci?
We estimate approximately 4,875 people named Jaci 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 70,309 Americans share this first name.
Is Jaci a common name?
Jaci is classified as "Rare" and is more popular than 96.5% of all first names in the SSA database. A total of 5,096 births have been registered with this name since 1880.
When was Jaci most popular?
Jaci reached peak popularity in 2005, when 221 babies were given this name. The average age of a living person named Jaci is approximately 26 years old, reflecting when the name was most commonly given.
Is Jaci a female name?
Jaci is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Jaci Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Jaci Smith, Jaci Johnson, Jaci 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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