Rank among US baby names by birth year, 1880–2025. Lower is more popular; the scale is logarithmic so the top of the chart is not compressed.
More children were named Isaiah in 2006 than in any other year — 10,483 of them. The name is already in use in 1880, where the data begins. Across the record, 30 years put Isaiah in the top 100.
The 2025 position is #57, on 5,273 births. Over ten years the count has fallen 31%.
Recorded US births by year. The peak is labelled; the axis starts at zero.
How many people are named Isaiah?
About 246,300 people named Isaiah are alive in the United States today. That is out of 254,710 recorded births since 1880.
This is a survival-weighted estimate, not a headcount: every recorded birth year is
multiplied by the chance someone born that year is still alive, using the SSA period life table.
How the estimate works.
How old is the average Isaiah?
Median age among living Isaiahs: 17. The 2000s produced the largest surviving cohort. By the site’s era rules that makes Isaiah a millennial-era name.
Your Isaiah
Estimated living bearers by age today. Each bar is a birth year, weighted by the chance someone born then is still alive.
Where Isaiah is most common
Isaiah is 2.5× as common in Hawaii as it is nationally. New Mexico, Alaska and Nevada follow.
Same as national3× or more
Location quotient, 2016–2025. Shaded states use the name more than the country does, relative to their own births. Exact figures are in the table below.
States where Isaiah is over-represented, 2016–2025.
The location quotient compares the state's share of the name with the national share.