Earth
You know it, you love it, and the chances that you live here are pretty high. Supports most types of life-forms, and has been host to many exciting fights. it’s regular appearances of bad guys, such as Raditz, Nappa, Frieza, King Cold, Androids, Cell and Majin Buu, planet Earth is guaranteed to please all. Not only that, but it’s also home to hero’s such as Goku, Gohan, Piccolo, Trunks and Vegeta. Earth is found in the North quadrant of the universe, which is overlooked by King Kai. Guardians of the earth include Kami and Dende. The planet earth is at one point completely destroyed by Kid Buu but is wished back with the Namekian Dragonballs.

Planet Vegeta
Unfortunately destroyed by the hand of Frieza, Planet Vegeta used to be home of the Saiyans, and all except a handful were wiped out. Planet Vegeta didn't used to be called Vegeta, and used to be home to 2 races - the Saiyans and the Tuffles. The Tuffles were destroyed by the brutal Saiyans, and the Saiyan's stole their technology and wealth (e.g. the Scouters were actually made by the Tuffles). The planet Vegeta and the entire Sayin empire was ruled but King Vegeta (Vegeta' s Dad). The reason why Goku (Kakarot), Vegeta, Nappa and Raditz survive is the they were sent on missions and were not present on the planet when Frieza destroys it 

Namek
Home of the Namek race, where Piccolo, Kami and Dende came from, it too was destroyed at the hands of Frieza. Unfortunately for Frieza, not only had the all the Nameks been wished to Earth, but after staying on Earth for 2 years, the Nameks headed off for a new planet, found one and still inhabit it till this day.

Arlia
Arlia is inhabited by strange looking bug things, and was destroyed by Vegeta and Nappa. While Vegeta and Nappa are on the planet they are captured but instead of killing the guards they decide to have some fun. The King of the Planet Arlia sentences Vegeta and Nappa to a death at the hand of there strongest warrior. After Vegeta and Nappa kill the warrior with no problems the evil king surrenders his thrown and the planet returns to piece. Vegeta and Nappa and then granted heroes but as they leave the planet the stand back and look at the planet they have just rescued and Vegeta destroys it with no remorse to what he has just done.

Yardrat
This is were Goku landed after Namek blew up, and he is where he was taught the Instant Transmission technique.

King Kai’s Planet
The tiny planet where King Kai lives has a gravitational force 10 times larger than Earth. King Kai's car is about 1/4 the size of the planet. Gregory the bug and Bubbles the Monkey live here as well. Goku trains here after he is killed by Piccolos special mind beam while he is holding Raditz. Goku trains in the martial arts form of Kia Ken. Also Tien, Yamcha and Chaozu train here, after they are killed fighting the Saiyans (Vegeta and Nappa) but not in the form of Kia Ken but in general martial arts. The plant is also located in the other world. Its exact location is at the end of snake way which is by the check in station

Planet Zoon
The planet Zoon, where Pui Pui comes from, has a gravity force 10 times that of Earth.

Planet Kanassa
This planet is inhabited by a race of creatures with psychic abilities. Not only can they read minds, but they can also foresee the future. In the Bardock TV special, the planet is conquered by Bardock and his crew. However, one of the creatures passes the psychic ability onto Bardock and he too can read minds and foresee the future. Planet Kanassa has a strange sort of energy that almost 'gives' the creatures their psychic powers.

Kaio-shin
This is the home of the Supreme Kai, and it's exact location is unknown - although it is found in the Other World. It is considered a holy land, but is messed up pretty badly when the fight between Goku and Kid Buu takes place there Surprisingly, it is not blown up though.