Carrie is the English diminutive of Caroline — from Carolus / Charles, Old Germanic karl (free man). Carrie Fisher (1956-2016) — Princess Leia (covered separately).
Carrie 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 Carrie reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.