http://www.techradar.com/news/youtube-tv-everything-you-need-to-know-about-the-new-tv-streaming-service

Update: YouTube TV just expanded in a big way, becoming available in 50% of US households, YouTube announced on August 17. The service is now in 14 additional markets, with 17 more in the pipeline over the coming weeks. YouTube TV is also expanding its network lineup to offer more viewing options at no extra fee. 

YouTube TV has finally arrived, and though it started small with five markets, it's now available in 29, with 17 more planned for the coming weeks. That covers 50% of US households, according to YouTube, which is no small feat.