Ainsley comes from the Old English place name Ainsley — combining an (alone) and leah (clearing) — meaning "solitary clearing" or "hermit's clearing." Used historically as a Scottish surname before becoming a given name.
Ainsley entered the U.S. top 1000 in 2005. The Scottish-American actress Ainsley Earhardt is a contemporary bearer.
Ainsley does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Ainsley reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.