A decades-old mystery that has confounded American television viewers for generations has finally been revealed. Last night, 'Simpsons' fans finally learned where the town of Springfield is.  Or rather, where it isn't.

The title card in last night's episode, which read "Now entering Oregon" under "The Simpsons," might have seemed like confirmation after creator, Matt Groening revealed in an interview last week that Springfield was inspired by the Portland, Oregon suburb of the same name. But later in the episode, Bart spelled it out for everyone on a chalkboard:

"The true location of Springfield is in any state but yours."

The confusion began when Groening suggested the location of the enigmatic smalltown is Springfield, Oregon, which is next to his childhood home of Portland. But while Groening admitted 'The Simpson's' Springfield was "inspired" by the Oregon town, he never said the two were one and the same.

“Springfield was named after Springfield, Oregon,” Groening told The Smithsonian magazine in an interview. “The only reason is that when I was a kid, the TV show 'Father Knows Best' took place in the town of Springfield, and I was thrilled because I imagined that it was the town next to Portland, my hometown. When I grew up, I realized it was just a fictitious name. I also figured out that Springfield was one of the most common names for a city in the U.S. In anticipation of the success of the show, I thought, ‘This will be cool; everyone will think it’s their Springfield.’ And they do.”

In fact, when asked by fans if the various Springfields around the country are the true home to the Simpsons, Goening's answer only incites more debate.

“I don’t want to ruin it for people, you know? Whenever people say it’s Springfield, Ohio, or Springfield, Massachusetts, or Springfield, wherever, I always go, ‘Yup, that’s right.’”

The moral of the story? We still don't know where Springfield is but it's a lot closer than you think.