Defines Hometown Associations (HTAs), discusses their history, and describes their function as an untapped resource for immigrant integration. Mexican HTAs have seen a sizable growth in the United States as a result of (1) the Immigration Reform and Control Act of 1986 (IRCA); (2) migrant responses to immigration legislation; and (3) the Mexican government’s proactive approach in promoting the formation of HTAs. HTAs are most beneficial in linking localities and promoting social, economic and cultural identity among their members. While they develop over time, their data fluctuates constantly as some associations form and dissolve. HTAs have multiple roles in immigrant society including establishing government initiatives in the country of origin; establishing developmental agencies in destination countries; funding initiatives; and creating co-developmental policies. Civic participation is often seen as a benefit of HTA involvement, especially when immigrants reach into the political arena. Concerns regarding the continued viability of HTAs include training volunteers, funding and monetary incentives for small HTAs, establishing partnerships for social services offered through HTAs, collecting and disseminating information, and recognizing the limitations of HTAs.