In May 2006, the Junction Fire scorched 3,500 acres (14 km2), then later combined with the Bar Fire, making that 100,000 acres (400 km2). Some areas of the Bar Fire are still smoldering in very remote areas. The Junction Fire threatened all of Junction City, and even some parts of the town of Weaverville.
On July 20, 2008 fire threatened communities near Junction City; some areas were under mandatory evacuation. Many huge forest fires broke out because of a lighting storm which occurred on June 20, 2008 in Northern California.
In the state legislature Junction City is located in the 4th Senate District, represented by Republican Sam Aanestad, and in the 1st Assembly District, represented by Democrat Patty Berg. Federally, Junction City is located in California's 2nd congressional district, which has a Cook PVI of R +13 and is represented by Republican Wally Herger.