Within-group homogeneity and exit in religious clubs

We investigate empirically the influence of homogeneity of populations in f ixed geographic jurisdictions on the structure of religious clubs in these same jurisdictions. Using county-level data, we find that variation in the number of religous clubs is influenced strongly by measured heterogeneity i n each county's population. Our findings support Tiebout's voting-with-the- feet model of competition in the supply of public goods, in a club context.