Community 1 - 35 households in Puerto Rico and 10 in the United States
Community 2 - 200 households in Puerto Rico and 20 in the United States
Community 2 is a low-income, working-class barrio (neighborhood) in the San Juan metropolitan area. The survey area can be split into two sides, north and south, divided by a busy, yet narrow, "avenue". The southern side borders a wetland and is clearly poorer than the northern side. Wooden houses with zinc roofs are typical of the southern side, while cement houses with solid roofs are more likely to appear in the northern side. Houses on the southern side are usually built on fiscal land, taken with no or dubious legal documentation. Most of the population of Community 2 works in low-skilled occupations in construction and the services sector, with a sizable proportion of unemployed workers and Dominican immigrants (households with a Dominican household head were excluded from the survey).
Community 3 - 150 households in Puerto Rico and 15 in the United States
Communities 4 & 5 - 200 households in Puerto Rico and 16 in the United States