Kylah is a spelling of Kyla, the feminine form of Kyle, which comes from the Scottish Gaelic caol and means "narrow strait" or "channel". The added h follows the pattern of Kaylah and Mylah. Kylah entered the US top 1000 in 2007, peaked at number 921 in 2009 and has drifted lower since; in 2025 it ranks number 1645 with 126 girls.