Uruguay Postal Codes Postal Codes of Uruguay:ArtigasCanelonesCerro LargoColoniaDuraznoFloresFloridaLavallejaMaldonadoMontevideoPaysanduRio NegroRiveraRochaSaltoSan JoseSorianoTacuaremboTreinta y Tres About Uruguay Capital: Montevideo Currency: Peso (UYU) Languages: Spanish (official), Portunol, Brazilero (Portuguese-Spanish mix on the Brazilian frontier) Population: 3,477,000 Area: 176,220 KM2