Where can I find an up to date list of free US proxies?

You should try Hotspot Shield http://hotspotshield.com/ . You need to install Hotspot Shield, and then run the software to get an USA IP number that it will allows you to watch content from Hulu or listen music with Pandora from a foreign country

There's always http://tor.eff.net. Proxies are usually too slow to watch streaming videos, unless you download them and watch them later (not sure that's an option on Hulu, even a backdoor option). Of course, there's always http://thepiratebay.org

Elite Private Proxies API on Mashape. Short life elite proxies updated every 1 minute. Every request create an private hostname that expired after 5 minuted. You can ask for geo located proxy or random party. Includes proxies count by countries endpoint Its all private proxies, its not scrapped from public lists. https://market.mashape.com/garrylachman/elite-proxies

if you are serious about finding a good US proxy list then remove the word free from you question, proxy servers are paid for so no one will give them to you for free.is either they are getting their money back through other means or they are stilling your information.the best way to get fresh safe proxies list of any country is to look for a cheap vpn software(ip software) like https://www.hidemyass.com/vpn/r17979:12/

if you need a proxy, buy it. dont steal.if you run a proxy server, you would know the trouble of preventing people from stealing your proxy/computer resources.there is no such thing as a free proxy. who’s got the free resources and time to be the ‘good samaritan?’