Community size has received some attention as a variable affecting the characteristics of a political system. Positive findings indicate that community size is related to type of governmental structure1 and to mass political participation.2 Contrarily, it has been found to be unrelated to the type of community power structure.3 In a study of New England communities, community size was found to be related to the amount of political participation by lawyers; almost all lawyers in smaller towns were politically active at some time during their careers, while those in larger cities were divided between the politically active and the politically inactive.4 This paper offers additional evidence to substantiate this last finding and attempts to relate it to a more general theory of differential political participation. The findings reported are from a study of lawyers' participation in politics carried out in the summer of 1965 in four counties of upstate New York. The counties included one with a total population of more than 400,000, one with a population of about 50,000, and two with populations of approximately 10,000 each. They were in the same general geographic location, and were chosen for both proximity to one another and variation in population size. The complete population of lawyers in the four counties was surveyed. The largest county had 867 lawyers, the medium-sized