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Diego vs Dieter

American parents have registered 126,405 Diegos since 1880, against 915 Dieters. Diego is still ahead, with 2,356 babies in 2025.

Babies given each name, 1880–2025

Births per year: Diego against Dieter, 1880 to 2025 0 2.5k 5k 7.5k 10k 1880 1900 1920 1940 1960 1980 2000 2020

Diego Dieter

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

Diego has been the commoner name in every year either was published, 1887 to 2025. The lead has never changed hands.

The closest they came was 1962, when Diego had 54 and Dieter had 33.

Side by side

  Diego Dieter
Total US births 126,405915
Most in one year 8,42336
Babies in 2025 2,356under 5
Estimated living today 124,000810
Median age today 1846
Peak year 20061967
Best rank 56th boys1,253rd boys
Rank in 2025 158thunranked
First recorded 18871953
Girls / boys 245 / 126,1600 / 915

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 Dieters alive today are over 46; half the Diegos are over 18. That is 28 years between them: two names in use at the same time, worn by two different generations.

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 Diego Dieter
France 23,115155
Belgium 4,501930
England and Wales 1,86729

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: Diego and Dieter.