The story of Keir
Keir is rare for boys in the United States, ranked #10,207 in 2025 with 7 babies given the name. It is currently declining compared with a decade ago.
Since 1963, 1,117 American babies have been named Keir, about 94% boys and 6% girls, making it a genuinely unisex name. Its peak came in 1970, when 74 newborns received the name, the signature sound of the 1970s.
The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Keir stood among all boys' names in any year, or use the compare tool to plot it against other names.