Corroios, Portugal

With a population of 46,475, Corroios remains the second most populous town in Portugal, after Algueirão-Mem Martins. However, this growing town has a youthful demographic - nearly a third of residents are under 25 years old. While Corroios boasts a rich history and natural heritage, the bureaucracy can be a persistent headache for newcomers. This diverse, working-class suburb is best suited for young families or immigrants seeking an affordable alternative to pricey Lisbon.