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Kirsti vs Kirstin

American parents have registered 8,778 Kirstins since 1880, against 1,010 Kirstis. Neither name reached five babies in 2025.

Babies given each name, 1880–2025

Births per year: Kirsti against Kirstin, 1880 to 2025 0 125 250 375 500 1880 1900 1920 1940 1960 1980 2000 2020

Kirsti Kirstin

Each line is every baby given the name that year, girls and boys added together — the only count that means the same thing for both names. A line breaks where the name fell below five babies in a year — the point at which the SSA stops publishing it — rather than being drawn through a figure nobody published. A single published year in a gap shows as a dot.

Who was ahead

Of the 71 years in which either name was published, Kirstin for 68 years and Kirsti for 3 years. The lead changed hands 4 times.

Side by side

  Kirsti Kirstin
Total US births 1,0108,778
Most in one year 106413
Babies in 2025 under 5under 5
Estimated living today 9708,500
Median age today 3535
Peak year 19911990
Best rank 1,485th girls564th girls
Rank in 2025 unrankedunranked
First recorded 19521942
Girls / boys 1,010 / 08,778 / 0

A rank is a position within one sex’s list for one year, so the two rank rows are not subtracted from one another and the winning column is not marked on them. The living figure is a life-table estimate, not a count.

Where each one is strongest

How much commoner the name is in that state than it is nationally, from births recorded since 1910.

Both names abroad

Countries whose statistics office publishes both names, so the comparison can be made somewhere other than the United States.

Country Kirsti Kirstin
Scotland 92979
England and Wales 24244

Every spelling a country files separately is added together, over whatever years that country publishes — which is not the same range in any two of them, so read the columns against each other and not the rows.

Compare something else

Related comparisons

Social Security Administration birth records, 1880–2025, public domain. Full histories: Kirsti and Kirstin.