Rockport rhymes with:
lockport, kennebunkport, lockport, airport, allport, bridgeport, cambridgeport, carport, coudersport, davenport, freeport, gumport, kennebunkport, kingsport, lamport, lockport, lufttransport, massport, mckeesport, passport, purport, rapaport, reexport, seaport, shippingport, shreveport, southport, spaceport, westport, williamsport
Rockport sounds like:
rachford, recovered, recuperate, recuperated, reexport, rexford, richford, roccaforte, rochefort, rochford, rockford, rushford