Nerea is a Basque name meaning "mine" — coined by the writer Erramun Olabide in 1934 as a Basque alternative to the Spanish Pilar.
Nerea is widely used in the Basque Country and across Spain.
Nerea 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 Nerea reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.