Advertising to a certain demographic

[agua]

OK - Is there a website/company where I can advertise to a set demographic, such as males, 30-40 year old?

Thanks

[Chris]

30-40 isn't an easily targeted age group, unless you have literal survey responses indicating as such, which you won't get unless you're going big budget.

But adult active men, 20-50, that is something you could do. Just find a guy site and advertise on it.