How Many People Are Named Kirsti?
An estimated 938 people in the United States have the first name Kirsti. It is almost exclusively a female name. The average bearer is 40 years old, and Kirsti peaked in popularity in 1991 with 106 births that year.
Below you will find a full statistical profile of Kirsti 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 Kirsti paired with any surname.
Estimated Living Americans
938
About 1 in 365,410 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
40
years old
Peak Year
1991
106 births
Total Registered
1,010
since 1880
Gender Distribution for Kirsti
Kirsti is almost exclusively a female name. Out of 1,010 total births registered, 100.0% were female.
Kirsti as a female name
Ranked #14,747 in 2007
7 female births in 2007
Peak: 1991 (106 births)
Kirsti: Popularity Over Time
SSA records for Kirsti span from the 1950s to the 2000s, covering 6 decades of naming data. The most popular decade for this name was the 1990s, when 500 babies were registered. Kirsti has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Kirsti by Decade
How has Kirsti 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.
Kirsti by State
Birth registrations for Kirsti span all 11 states and territories in the SSA database. The highest counts are in Texas, California, Ohio. The lowest are in Missouri, Michigan, Louisiana. On average, about 16 Kirstis were registered per state.
Kirsti + Last Name Combinations
How many people share a full name with Kirsti as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Kirsti
Other first names starting with K with a similar number of bearers.
Kirsti: Questions and Answers
How many people in the U.S. are named Kirsti?
We estimate approximately 938 people named Kirsti 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 365,410 Americans share this first name.
Is Kirsti a common name?
Kirsti is classified as "Very Rare" and is more popular than 89.7% of all first names in the SSA database. A total of 1,010 births have been registered with this name since 1880.
When was Kirsti most popular?
Kirsti reached peak popularity in 1991, when 106 babies were given this name. The average age of a living person named Kirsti is approximately 40 years old, reflecting when the name was most commonly given.
Is Kirsti a female name?
Kirsti is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Kirsti Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Kirsti Smith, Kirsti Johnson, Kirsti 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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