Googles YouTube TV streaming service has expanded into 14 new US markets, potentially putting it into the homes of half of all American households now, with launches in an additional 17 markets in the US planned over the course of the next few weeks.

The live streaming service has particularly focused on younger viewers who increasingly watch TV shows online, leaving traditional broadcast networks struggling with aging demographics among their viewership.

The expansion comes following a partnership agreement with television station operator Sinclair Broadcast Group, which enabled YouTube TV to air ABC, CBS, Fox and NBC affiliates in nine of the 14 new markets. Sinclair also has stations in 11 of the 17 markets that YouTube TV plans to enter over the coming weeks.

The new markets include major cities like Boston, San Antonio and Cincinnati, with Austin and Indianapolis on the list of those where the service will soon be hitting.

While YouTube has not revealed the number of subscribers that the service boasts, it claims that, in the markets where it is available, it carries the most local broadcast stations of any live TV streaming services. Sling TV, one of YouTube TVs major competitors, only offers local channels on higher tier subscriptions.

YouTube TV also has plan to add Newsy, a short-form video news site, and The Tennis Channel to its lineup at no additional cost to subscribers.

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