From my experience, I'm absolutely sure that large NYC companies are far more cautious about it. Both cities are full of young people, but CA doesn't even try.
E.g. the YC application always has directly asked for age. Try that in NYC.
SF is too happy to bend to the demands of the tech lobby because the industry is so dominant there.
In NYC tech is one of many. The importance is recognized, as it has created jobs while other industries are in decline (cough publishing), but there is no sense here that anyone feels the need to kowtow to the industry.
Looking just now the YC application doesn't explicitly ask for age, but it does ask for
> Please enter the url of a 1 minute unlisted (not private) YouTube video introducing the founders
It would be pretty easy to discriminate on age/race/sex with that.
You're looking at the wrong page. They've moved the personal questions to a separate "Founder Profile" form, which each founder gets a special email link to access and fill out.
NYC shows that it's possible to do vastly better on those. Or at least not to brazenly laugh in the face of those laws.