Port St. Lucie is a multi-word proper noun used as a place name and, informally, can be encountered in traffic reports or travel discussions. It is pronounced as a two-part locational name with stresses on the main words; the sequence flows quickly in natural speech. The format often appears in written text as “Port St. Lucie, FL” and is read with attention to the individual components rather than as a single syllable stream.
Full pronunciation guide