Springfield, Oregon of Springfield that stated, in part "Yo to Springfield, Oregon – the real Springfield." In April 2012, Groening confirmed to "Smithsonian" magazine that he named the fictional Springfield after Springfield, Oregon. He also confirmed that he intentionally left it a secret to allow people the enjoyment of assuming it was based on their own Springfield. This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above . According to the Köppen Climate Classification system, Springfield has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps. Springfield, Oregon Springfield is a city in Lane County, Oregon,
Springfield, Illinois the Old State Capitol in Springfield as a backdrop when he announced Joe Biden as his running mate on August 23, 2008. Springfield is located at (39.6983146, −89.6195900). The city is at an elevation of above sea level. Located within the central section of Illinois, Springfield is northeast of St. Louis. The Champaign/Urbana area is to the east, Peoria is to the north, and Bloomington–Normal is to the northeast. Decatur is due east. According to the 2010 census, Springfield has a total area of , of which (or 90.44%) is land and (or 9.56%) is water. The city is located