Do you know anyone who is transgender?

Yes. One of my DH's high school friends is trans female. We also know several younger people through our DS that are trans and through our niece who has two trans roommates and several trans friends. 

Jen

DH had a boss who transitioned, aged 50ish, about 20 years ago. She is the only person I personally know.

I know many.

My hair stylist does drag shows. We talk about how they make wigs and jewelry and such.

Yes just one person.

I thjink that if you don't know a single transgender person, it's because they don't trust you to know.

Or maybe you have a small social circle, aren't working outside the home or have an illness that stops your world from being big. I don't think it automatically paints anyone as untrustworthy.

I don't think it's that uncommon not to know any transgender people personally - especially in the older population, as if they have/had trans people in their friends group they probably hid it...either they transitioned and lived as the other gender and never told anyone, or never openly admitted how they felt.

Also despite some sections of the media wanting us to believe that trans people are everywhere and taking over sport and every single public toilet, there's really not that many of them. I just looked up statistics for Australia, and the estimated number is 25,000 out of a population of 25.6 million.

I work with trans people, and all my life I have always had gay male friends...but if it wasn't for work, I doubt I would know any trans people personally.
One of my friends has 2 sons who are gay, and two people I know have teen children who identify as non binary (both AFAB) but that isn't the same thing. In my personal life, even though I am an ally, a big fan of drag and have gay friends, I don't have a single transgender friend.

Maybe they just don't feel the need to announce it? I don't go around announcing I was assigned female at birth.

No, but I am old, most of my friends are also old and their children are middle-aged now. But honestly, I wouldn’t bat an eye. I do not think that it is my business to weigh in on how someone chooses to live their life.

Yes. Two. One is the sibling of one of DS's closest HS friends. The other is a student older than DS from his HS.  

The hairstylist might be transgender, but the majority of people who do drag are not trans.

Yes. Family member. Friends. Children of friends. Friend of dd's.

I also have a few friends who are gender fluid as well.

I personally do not know any transgender people. I live in a really small town but work in a larger city. I admittedly don't have much of a social circle. I'm new to my company but have become friendly with most of my coworkers. I don't believe I put any vibes out that would cause someone to not want me personally to know as aprilfay21 suggested.

When I first read the OP, my initial thought was that I don't know anyone who is transgender. Then I remembered that a girl in DS's high school band is a transgender male.