Sinclair vs Sinead

Babies given each name, 1880–2025

Sinclair Sinead

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 117 years in which either name was published, Sinclair for 91 years and Sinead for 26 years. The lead changed hands 14 times.

• 1900–1984 Sinclair ahead, apart from one short spell
• 1988–2007 Sinead ahead, apart from one short spell
• 2010–2025 Sinclair ahead, apart from one short spell

9 shorter spells of a year or two are folded into the spans above rather than listed separately.

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.

Where each one is strongest

• Sinclair South Carolina (42.3×), New York (2.0×)
• Sinead Massachusetts (7.3×), New York (5.0×), California (2.1×)

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

• Sinclair vs Sincere
• Sinclair vs Sindy
• Sinclair vs Sinai
• Sinclair vs Sina
• Sinclair vs Sindi
• Sinead vs Sincere
• Sinead vs Sindy
• Sinead vs Sinai