Hipparchia (Ἱππαρχία, c. 350-280 BCE) was the Greek Cynic philosopher of Maroneia — wife of Crates of Thebes. She rejected an aristocratic life to marry the wandering Cynic philosopher and lived openly with him in the agora, a radical act for her time.
Featured prominently in Diogenes Laërtius's Lives of Eminent Philosophers.
Hipparchia 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 Hipparchia reduce to 8, The Visionary. This is a traditional interpretive system, not a factual claim about the name.