AgeName

Katherine vs. Katie: which name is older?

The average Katherine is 43 and the average Katie is 37, so Katherine is the older name, by about 6 years.

Katherine

Average age
43
Median age
40
Estimated alive
478K
Peak year
1990

Katie

Average age
37
Median age
37
Estimated alive
195K
Peak year
1986

When was each name popular?

Katie peaked first, in 1986 (in the mid 1980s). Katherine peaked in 1990, 4 years later.

Estimated living people with each name, by the year they were born.

Which name is more common?

There are about 480,000 Katherines and about 190,000 Katies alive in the US, so there are about 2 times as many Katherines as Katies.

Boys or girls?

Both are girls' names: over 99% of living Katherines and over 99% of living Katies are women.

Names the same age as Katherine

Names the same age as Katie

More comparisons: Catherine vs. Katherine

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Katherine or Katie: questions

Which is older, Katherine or Katie?

The average Katherine is 43 and the average Katie is 37, so Katherine is the older name, by about 6 years.

How old is the average Katherine?

The average Katherine in the US is 43; half of all living Katherines are between 28 and 58.

How old is the average Katie?

The average Katie in the US is 37; half of all living Katies are between 27 and 44.

Which is more common, Katherine or Katie?

There are about 480,000 Katherines and about 190,000 Katies alive in the US, so there are about 2 times as many Katherines as Katies.

Estimates from Social Security Administration baby-name records (births 1880–2025) and SSA cohort life tables (2026 Trustees Report). How we calculate this