Wilma is the short form of Wilhelmina, from the Old Germanic wil + helm ("resolute helmet"). Recipient of the Presidential Medal of Freedom (1998).
Two of the most consequential 20th-century Wilmas.
Wilma 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 Wilma reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.