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Mack vs Mackinley

American parents have registered 42,900 Macks since 1880, against 787 Mackinleys. Mack is still ahead, with 668 babies in 2025.

Babies given each name, 1880–2025

Births per year: Mack against Mackinley, 1880 to 2025 0 250 500 750 1k 1880 1900 1920 1940 1960 1980 2000 2020

Mack Mackinley

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

Mack has been the commoner name in every year either was published, 1880 to 2025. The lead has never changed hands.

The closest they came was 2001, when Mack had 100 and Mackinley had 35.

Side by side

  Mack Mackinley
Total US births 42,900787
Most in one year 84737
Babies in 2025 66813
Estimated living today 20,000780
Median age today 4414
Peak year 19422018
Best rank 190th boys4,768th girls
Rank in 2025 463rd7,885th
First recorded 18801992
Girls / boys 180 / 42,720431 / 356

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.

Which name is older

Half of the Macks alive today are over 44; half the Mackinleys are over 14. That is 30 years between them: two names in use at the same time, worn by two different generations.

Both names abroad

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

Country Mack Mackinley
England and Wales 46226

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: Mack and Mackinley.