Hi Kundaweb,
In it's latent form, kundalini is said to be stored at the kanda chakra. It is an egg shaped region of the subtle body located between the root chakra (muladhara), and the sacral chakra (swadhisthana).
But in practice, having knowledge of where it is located, doesn't help a lot, because it isn't awakened by locating it. It is awakened by purifying the body and the mind through spiritual practice.
All the best,
Christi