Jacinta is the Spanish and Portuguese form of Hyacinth — from the Greek hyacinth flower. Saint Jacinta Marto (1910-1920) was the youngest of the three Fatima visionaries, canonized in 2017.
Jacinta is widely used in Spain, Portugal, and Latin America.
Jacinta 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 Jacinta reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.