Haley has 159,187 SSA records and peaked in 2000 — one of the defining names of the turn of the millennium, currently ranked 779. It's a name that occupied the center of American girl naming for a full decade, and now sits in the quiet post-peak period that precedes an eventual revival.
The Old English Meadow
Haley originates as a surname from Old English heg (hay) and leah (woodland clearing or meadow) — essentially a hay meadow, a pastoral English surname that became a first name. The spelling Haley is the most common American form; Hayley is the British standard (after Hayley Mills, the British actress who made the name famous in the 1960s); Hailey and Hailee are American phonetic variants. The hay-meadow etymology is genuinely pastoral and has a quiet nature-name quality that the name's popularity somewhat obscured. Old English surnames with meadow or field roots form a large and durable naming family.
The Hayley Mills Origin Story
Haley Mills, the British actress who rose to fame in Disney films in the early 1960s, is broadly credited with bringing the name into mainstream English-language use. Her roles in Pollyanna and The Parent Trap made her one of the defining child stars of the era, and parents naming daughters in the 1960s and 1970s reached for her name. American use of Haley grew slowly through the 1970s and 1980s before exploding in the 1990s — the British actress connection was by then largely forgotten, replaced by the name's own momentum.
The Spelling Wars
Haley competes with Hailey, Hayley, and Hailee for the same sound. Hailey is currently more popular; Hayley reads most British; Haley reads most straightforwardly American. The spelling choice matters because a child will spend years specifying which version theirs is. Haley versus Hailey — essentially the same name, different visual impression. For parents who want the hay-meadow name without the spelling debates, any of the forms delivers the sound equally well. Names that peaked around 2000 share this sprawling spelling-variant landscape.