The Young Professional's Guide: With a median age of 44.6, Warwick is a hotspot for those looking to build a career in Rhode Island. The city supports a population of 82666 and maintains a median income of $77,110.00. If you aren't ready to commit to a $253,100.00 home purchase, the rental market—averaging $1,240.00—offers plenty of opportunities to find a room and a compatible housemate.