How many planets have Stargates?

Answer 1

It was never revealed the exact number of stargates. The only number ever given as to how many is in the thousands. I doubt an actual number will ever be given as new gates are revealed nearly every episode of Stargate Universe and Stargate Command has no idea where the Universe crew is. Theoretically though there can be millions if not billions of gate combinations. There are atleast 62 million possible gates for each galaxy using the known 7 symbol addresses and an additional 32 symbols for an 8 symbol address such as that needed by the Atlantis Series

(Why does the word symbol not look like it's spelled right? Maybe it's simbal or symble, who invented this spelling anyway?)