My brother was a bike messenger and he broke his finger. So I tried it and ended up liking it. That was 8 years ago, when I was 28 years old. I never looked back. I heard it's something like 3,000.
Some people say more.
Just bicycle messengers sending packages, maybe like 1500. But if you count food delivery, it's like 5000 or more. A lot of people in New York do it as a regular job. I know people who have families and everything. You don't really register, you just get a job.