Odile is from the French form of the Germanic Otilia/Odilia — from uod (wealth, fortune). Saint Odile of Alsace (c. 662-c. Odile in Alsace, France — one of the major pilgrimage sites in northeastern France for 1,300+ years; her feast day December 13 remains a major Alsatian holiday; one of the most-celebrated medieval Frankish female saints. Princess Odile — multiple medieval French royal namings.
Odile 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 Odile reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.