The article said Keelung and New Taipei City have the most, so you know where to head people. What can I say I am like an angel sent from heaven offering you all advice where to go! You can all thank me with beer and biscuits in the future thank you!
Here is the article about the amount of unmarried women! (p.s they're are a lot of unmarried men too!)
Apple Daily article - unmarried women
They go on to tell you their reasons, mainly due to their career, or they are too hot and guys assume because she is that hot she must already be married, or they just cant be arsed!