According to the Instituto Nacional de Estatística (National Institute of Statistics, or Statistics Portugal), the city of Caldas da Rainha contains the entirety of Santo Onofre, most of Nossa Senhora do Pópulo (excluding the settlements of Lagoa Parceira, Imaginário, and Casal do Tanqueirão) and the southernmost portion of Tornada, but the municipal assembly does not accept any portion of Tornada as part of the city. Nossa Senhora do Pópulo and Santo Onofre are separated by the Linha do Oeste (Western Line) railway line, as specified in the 1984 law (effective 1 January 1985) that carved Santo Onofre out of the civil parish that was called Caldas da Rainha at that time.