Elizabeth comes from the Hebrew Elīšeḇaʿ (אֱלִישֶׁבַע), composed of El (God) and shava (oath, abundance) — meaning "God is my oath" or "my God is abundance." In the New Testament, Elizabeth is the mother of John the Baptist and cousin of Mary.
The name has been continuously in the top 25 American girl names for over 130 years — one of the most stable names in the language.
Elizabeth 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 Elizabeth reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.