Jill vs Jillian

Babies given each name, 1880–2025

Jill Jillian

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 115 years in which either name was published, Jill for 73 years and Jillian for 42 years. The lead changed hands once.

• 1906–1983 Jill ahead
• 1984–2025 Jillian ahead

Side by side

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 Jills alive today are over 57; half the Jillians are over 30. That is 27 years between them: two names in use at the same time, worn by two different generations.

Where each one is strongest

• Jill Iowa (2.2×), Minnesota (2.2×), Wisconsin (2.1×)
• Jillian New Hampshire (3.5×), Massachusetts (2.6×), Rhode Island (2.4×)

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.

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

• Jill vs Jilian
• Jill vs Jiles
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• Jillian vs Jilian
• Jillian vs Jiles
• Jillian vs Jillene
• Jillian vs Jil