1. Mercury
2. Venus
3. Earth
4. Mars
5. Jupiter
6. Saturn
7. Uranus
8. Neptune
You might also be interested in the order of the dwarf planets:
1. Ceres (located in the asteroid belt)
2. Pluto
3. Eris
4. Makemake
5. Haumea
Let me know if you have any other questions about the solar system!