How Many People Are Named Kaci?
An estimated 9,752 people in the United States have the first name Kaci. It is predominantly female (98.4%). The average bearer is 28 years old, and Kaci peaked in popularity in 1990 with 362 births that year.
Below you will find a full statistical profile of Kaci 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 Kaci paired with any surname.
Key Insights
- While Kaci is overwhelmingly female, 163 male births have been registered with this name since 1880.
Estimated Living Americans
9,752
About 1 in 35,147 people in the U.S.
Rarity
Rare
Predicted Gender
Female
98.4% confidence
Average Age
28
years old
Peak Year
1990
362 births
Total Registered
10,084
since 1880
Gender Distribution for Kaci
Kaci is predominantly female (98.4%), though 163 male births have been registered. It functions as a unisex name for a small percentage of bearers.
Kaci as a male name
Ranked #6,615 in 2024
13 male births in 2024
Peak: 2022 (15 births)
Kaci as a female name
Ranked #2,073 in 2024
93 female births in 2024
Peak: 1990 (362 births)
Kaci: Popularity Over Time
SSA records for Kaci span from the 1960s to the 2020s, covering 7 decades of naming data. The most popular decade for this name was the 1990s, when 2,816 babies were registered. Kaci has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Kaci by Decade
How has Kaci 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.
Kaci by State
Birth registrations for Kaci span all 39 states and territories in the SSA database. The highest counts are in Texas, California, Louisiana. The lowest are in South Dakota, Montana, Massachusetts. On average, about 184 Kacis were registered per state.
Kaci + Last Name Combinations
How many people share a full name with Kaci as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kaci
Other first names starting with K with a similar number of bearers.
Kaci: Questions and Answers
How many people in the U.S. are named Kaci?
We estimate approximately 9,752 people named Kaci 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 35,147 Americans share this first name.
Is Kaci a common name?
Kaci is classified as "Rare" and is more popular than 97.7% of all first names in the SSA database. A total of 10,084 births have been registered with this name since 1880.
When was Kaci most popular?
Kaci reached peak popularity in 1990, when 362 babies were given this name. The average age of a living person named Kaci is approximately 28 years old, reflecting when the name was most commonly given.
Is Kaci a female name?
Kaci is predominantly female. 98.4% of people with this name are female. See the gender breakdown above for full details.
How many Kaci Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kaci Smith, Kaci Johnson, Kaci 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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