The plural of the word resident is residents. Just add an -s. Why is it puzzling? The plural residents sounds like the word residence. If you get confused, this might help:
- resident – one person who lives in a place (a resident of Virginia, the resident of this house)
- residents – people (2 or more) who live in a place (residents of Virginia, the residents of this house)
- residence – the place where one or more people stay or live (a college student’s permanent residence is in Florida, but their current residence is at the university).
- residences* – the places where one or more people stay, live, or have lived.
*When you change residence to the plural form, remember to add a syllable /Iz/ when you pronounce it.