This article argues that, like fashion, national identity may be influenced by “neighbors” in a broadly defined sense. Inspired by models of collective choice, we hypothesize that, in Taiwan, a subethnically divided society facing a dilemma in its relationship with China, township residents and occupational peers are subject to mutual influence in the formation of their national identity. Methodologically, we compare spatial regression with dummy variable regression and hierarchical linear models. Based on spatial regression with survey data, our findings show that the formation of national identity in Taiwan indeed exhibits strong neighborhood influence.