I doubt switching zip codes would do much. It'll just see the same IP address either way, giving away your location.
VPN's might work, but there can be other issues with that too. If your VPN will allow you to select the location, it could potentially work, but a lot of them randomly bounce around, sometimes out of country. The reason that can definitely be an issue is Hulu is very region locked. It's not available outside North America, so you might just get booted from Hulu straight up lol.