Most people in most zip codes. 70 years * 365 days * 2 sexes = 51,100. The average zip code has about 10,000. Never thought of this before.

John D Cook did a couple of good blog posts on this

https://www.johndcook.com/blog/2018/12/07/no-funding-for-unw...

https://www.johndcook.com/blog/2018/12/07/simulating-zipcode...

I'm pretty sure I didn't give them my birthdate. I also didn't give them my full name. If birthdate is required, I would have given a fake one.

I don't see any reason to give them your exact birthdate.

They could obviously dig into the billing data and get my info, but at least it's not right there together.