District 12
District 12 is where Katniss, Gale and Peeta grew up. District 12 is the poorest of the Districts and in the third book, is not even there anymore. The Capitol razed it while Katniss was in the arena for the second time. Katniss was upset that it was gone because it was were she met Gale in the woods and were her father taught her to hunt so she could later support her family. District 12 specializes in mining. Almost all of the men in District 12 work in the mines and that is where Katniss's and Gale's fathers died after a mine explosion.
District 13
District 13 is Katniss's new home after the 2nd Hunger Games she competed in. District 13 was belived to be destroyed by the Capitol in the dark days of rebellion. After they were razed by the Capitol, they rebuilt the entire district underground. District 13 is run by President Coin, who also detests the Capitol. Katniss lives here with her mother, sister Prim and Prim's cat, Buttercup. District 13 is prepared for everything. They were prepared when Peeta warned them on national TV that the Capitol was sending a bomb attack. They were able to set off a warning and got to the emergency bunker that was miles underground.
The Capitol
The Capitol, which is partly evacuated due to the news of the rebels coming for Peeta, is where Katniss and the other rebels sneak into to try to save Peeta. They move swiftly through the streets, careful not to trigger any booby-traps. One time, they heard that Peacekeepers, (which are kind of like police officers), were following them so they went into the vacant apartments and hid until the Peacekeepers finally declared they were dead. (They were wrong, of course, but it would be better if they thought that). Eventually, Katniss and the team made it to Snow's mansion and President Coin took over Panem. However, shortly after, Snow and Coin were both dead.
Snow's Mansion
President Snow's masion is a place of horrible memories for Katniss. In the first book, Katniss stood next to Peeta while he talked from his mansion right before her first Hunger Games. Also, Katniss's sister Prim was killed in the mansion. After President Coin took over Panem and Snow wasn't dead yet, she wandered the mansion and found where he kept his poisionous roses with intoxicating fumes and where Katniss found Snow being held hostage. President Snow was a ruthless person and has a sick place for him to call home.