Oregon gained about 75,000 more residents than it lost from 2003-2008 with Californians accounting for the lion’s share of immigrants. Based on tax returns filed during that five-year period, the numbers show that approximately 472,000 people moved to the state, while about 397,000 left the state. (These figures do not include international migration.) Oregon’s new transplants brought along $2.7 billion worth of income (in 2009 dollars). Without its southern neighbor, Oregon would have had no net gain at all, though it had at least a small net gain of residents from all but 13 states. Michigan, Illinois and Colorado were the other states from which most new residents migrated. The state drawing the most ex-Oregonians was Washington, absorbing 9,180 more people than it lost, followed by Idaho, Arizona and Texas. The state had a net gain of fewer than 250 residents in 2004, but the influx surpassed 24,000 in 2006, and in 2008 more than 16,000 people moved, in bringing with them $538.7 million in income.