District Three develops technology for Panem. This includes any hovercrafts, phones, panels, anything. They are very smart, and win the Games ever so often because of their skills with different branches of engineering.

District Four's main industry is fishing. They also specialize in swimming and boating, and are a Career District. Their Tributes are known for making nets and holding their breath for long periods of time in water. 

District Five powers the electricity for all of Panem. Their residents work in power plants, and operate machines. They also know a bit about engineering, and can build gadgets as well.

District Six is known for transporation. Some of their inhabitants are also known to be addicted to morphling. They have a big disadvantage because they have no experience in working with weapons, but could be good with mechanics.

District Seven specializes in Lumber, meaning that their Tributes have an advantage because they use axes in their everyday lives. Their District is known to be covered with many trees, and pathways.

District Eight specialized in textiles. They work in factories, and create different fabrics for fashionable things for the Capitol. This is said to be one of the poorer Districts.

District Nine's main industry is grain. It's residents work in factories and grain fields. Their children often don't win the Games because they don't have much experience with any weapons. 

District Ten's industry is livestock. Their inhabitants work as butchers, cowhands, etc. They don't only tare of cows, but chickens, goats, ducks, and the like. Their Tributes don't often win the Hunger Games.

District Eleven is one of the poorest Districts of Panem. Their industry is agriculture. Their inhabitants provide Panem with fresh fruits, vegetables, and the like. Their Tributes don't often win the Games, but may be able to identify edible and unedible fruits and vegetables, as well as different creatures depending on the Arena.

District Twelve is said to be the poorest District of Panem. Their trade is mining. Their inhabitants, once they turn 17, go to work in the mines as a job. The others younger than 17 mostly take small jobs at the market, singing on the streets, something simple. But the majority don't have jobs. This District is known for many deaths of sicknesses and mining accidents. Their Tributes don't often win the Hunger Games.