Where can comets be found?
Because of the wide range of their orbital periods, comets can be found in a number of places in the Solar System.
Short period comets usually depart from the area of Kuiper Belt.
Long period comets usually depart from the Oort Cloud on the boundaries of the Solar System.
The comets themselves can be found anywhere along their orbits. The orbits are different for each of the comets. The exact position of a given comet depends on its orbit and time.
Some comets do not have stable orbits and are thrown out into interstellar space after making only one pass.