“Mandy first appears in Season 5,” Claire says. “She’s a local weather girl. She meets Georgie when he lies about being 21. She’s clearly older than him.”
If you need the canon answer for a debate or quiz: 29 . If you want to sound like a superfan: “She’s 29 when she has CeeCee, born in 1994 (same year as the actress’s character age math). But don’t overthink it – just enjoy the comedy.” how old is mandy from young sheldon
Here’s a short, useful story that answers the question while illustrating why TV character ages can be confusing. The Case of Mandy’s Missing Birthday “Mandy first appears in Season 5,” Claire says
Leo nods. “Georgie is 17 then. She says, ‘I’m not robbing the cradle.’ So she’s not too old.” She’s clearly older than him
Leo grins. “Thanks, Mom. I’m winning this argument.” Claire smiles. “That’s the real useful part.”