This paper builds on the work of Chaganti and Greene (2002) who distinguish between ethnic minority entrepreneurs/small business owners who are very involved with their ethnic community and those who are not. We extend their work by developing an Index of Ethnic Community Involvement based on personal but also business characteristics. We utilize a large sample size (698 interviews with entrepreneurs), drawn from five ethnic groups and develop a valid and reliable (.69) Index of Ethnic Involvement (IEI) with a strong emphasis on Social Capital Theory. Our initial analysis shows the IEI predicts some personal and business characteristics. Future development will include building regression models to predict business outcomes. The IEI, when fully developed, promises to be useful for targeting assistance, education and training programs and policy initiatives for entrepreneurs and small business owners according to the level of ethnic community involvement.