There has been plenty of consideration to station Santa in North Pole, Alaska, but the general consensus is that it was silly and stupid. Sylvester became the first Santa to permanently move to North Pole, having received the courage to do so from the fact that the town housed his future wife Sarah, who would later have a great-granddaughter named after her.
The two humourously met as you see here. In the FIniverse, Santa Clause is a universal fact and nobody questions the existence of Santa and Christmas magic. This has led to many unfortunate incidents of robbers and serial criminals taking advantage of this by posing as Santa. They rarely get very far, but it never hurts to be careful.