Certain spout off commenters think that a majority of Taylor Swift fans are between the ages of 10-12. Nothing could be further from the truth. A Demographic Deep Dive Into the Taylor Swift fans says nearly half (45%) are millennials, while Gen Xers (21%) and baby boomers (23%) each represent just under one-fourth of total avid Swift fans. Also, her fans are extremely loyal and if she supports Kamala Harris they will too. That should make the Trump campaign very nervous.