Aria is the Italian word for "air" and, in music, for a solo vocal piece — typically in an opera. The most famous arias are moments where the action stops and a single character pours out their soul: Puccini's "Nessun dorma," Verdi's "La donna è mobile." The word carries that quality of pure singular voice.
Aria has also been adopted independently in Persian and Hebrew traditions, where similar-sounding words exist with their own meanings ("noble" in Persian, "lion of God" in Hebrew as a feminine form of Ariel). Three origins, three meanings, one short name. Aria appeared in the U.S. top 1000 only in 2002 and has rocketed to the top 25.
Aria 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 Aria reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.