Região Metropolitana de Porto Alegre – RMPA (Porto Alegre Metropolitan Region) is the most densely populated area of Rio Grande do Sul, concentrating more than 4 million inhabitants – 37.7% of the total population of the State. Nine out of the 18 municipalities of RS with more than 100 thousand inhabitants integrate it. The average population density of the region is 389.7 inhab/km².
RMPA was established by law in 1973. Initially it was formed by 14 municipalities. Population growth resulting mainly from internal migration, interconnection of urban networks and successive political emancipations caused new areas to integrate the metropolitan region, totaling the current 34 municipalities. The last municipality to be emancipated was São Sebastião do Caí, in 2012. These have some disparities in relation to socioeconomic indicators, reflecting an unequal distribution of economic resources, as well as of services and urban facilities such as transport, health, education, housing and sanitation.
RMPA is a pole of attraction and concentration in the State. This characteristic, previously restricted only to Porto Alegre and the most populated cities, is currently also seen in the cities around RMPA. Many people move to this area of increased economic expansion, attracted by the offer of services and jobs.
Source: IBGE, Metroplan