Jackie is a diminutive of Jacqueline — the French feminine of Jacques (James), from the Hebrew Yaakov ("supplanter"). Jacqueline "Jackie" Kennedy Onassis (1929-1994) — American First Lady (1961-1963) and global style icon; her 1962 televised White House tour was watched by 80 million Americans; her oversized sunglasses, pillbox hats, and Oleg Cassini wardrobe shaped 1960s American fashion. Editor at Doubleday from 1978 until her death. Jackie Brown (Tarantino); Jackie Robinson is male.
Jackie 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 Jackie reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.