The purpose of this study is to provide an estimation of the ways in which Jefferson College impacts and stimulates the economy of Jefferson County and the state of Missouri as a whole. It provides quantitative information for use by the Board of Trustees and the Administrative Cabinet in institutional planning endeavors. It is also a useful reference for faculty and staff regarding the economic significance for the College to the area it serves. This study uses the data from fiscal year 2002. The major findings of the study are the following: (1) the revenue stream in Jefferson County is enhanced by $18,606,234; (2) the total spending impact of the College in Jefferson County is estimated as $36,927,475; (3) the expected increments in county sales taxes from graduates over their working lives is $6,928,667; (4) total full time college related employment in Jefferson County in FY 2002 was estimated at 1,627; and (5) the annual cost for the average Jefferson County homeowner to support the college is estimated to be only pennies a day. The study concludes that Jefferson College has a major impact on the economy of Jefferson County and on the state as a whole. (MZ)