Using the Oklahoma State University (OSU) computerized community simulation model, extension professionals can provide local decision makers with information derived from an impact model that is dynamic, community specific, and easy to adapt to different communities. The four main sections of the OSU model are an economic account, a capital account, a demographic account, and a government account. The economic account is the driving force of the model and includes a community specific input-output model and a gravity model, which is employed to determine the service area of a community. A location quotient technique is applied to a regional or state input-output model. The community model is made dynamic through the use of equations that predict final demand over time. The capital account allows for the simulation investment and its effects on the economy. The demographic account is a typical birth, death, population projection model with migration being an equalizer to match up people with available jobs in the economic sector. The government account estimates the need for services based on community service use co-efficients. This report illustrates the model by reporting its application with the community of Holdenville, Oklahoma. (JHZ)