The lineup for Summerfest 2015 has been announced, and it's a big one for country fans, with Florida Georgia LineKeith UrbanZac Brown Band and more set to play during this year's festival.

Summerfest is set to take place June 24-28 and June 30-July 5 in Milwaukee, Wis. FGL, Urban and ZBB will each headline one night of the festival. Other country performers include Thomas RhettMartina McBrideChase RiceKip Moore, Frankie Ballard, Dan + ShayBrett Eldredge, Kellie PicklerSheryl Crow, Billy Currington, Trampled By Turtles, the Punch Brothers, Blackberry Smoke, Kristian Bush, the Infamous Stringdusters, the Doobie Brothers, Phil Vassar and Big Smo.

Summerfest 2015's other headliners include the Kings of Leon, Linkin Park, Kendrick Lamar and Ed Sheeran; see the full lineup at Single and multi-day tickets are available for Summerfest 2015 at the festival's website.

The festival was founded in 1968 by former Milwaukee Mayor Henry Maier, after he visited Munich, Germany's Oktoberfest celebration, and has grown from a city-wide 35-location event to a dedicated festival space on the city's lakefront. More information about the Summerfest's history can be found here.

Florida Georgia Line and the Zac Brown Band will both spend much of the summer on the road, the former on their continuing Anything Goes Tour and the latter for a string of dates to promote their upcoming Jekyll + Hyde album. Urban, meanwhile, will also headline the 2015 Taste of Country Music Festival and Country Jam 2015, set to be held in June in New York and Colorado, respectively.

See Zac Brown's Yearbook Picture!

How Well Do You REALLY Know Florida Georgia Line?