This report describes the economic impacts of travel to and through the state of Washington and each of its 39 counties over the time period 1991 to 2006. These findings show the level of travel spending by those traveling to and through the state and the impact this spending has on the economy in terms of earnings, employment, and tax revenue. A primary objective of this research is to provide reliable, detailed figures that allow comparisons from year-to-year at the state and county levels.