Houstonian rhymes with:
bostonian, estonian, bostonian, estonian, newtonian, plutonian, washingtonian, amazonian, andonian, apollonian, babylonian, bostonian, caledonian, devonian, draconian, estonian, gorgonian, jacksonian, jeffersonian, melkonian, newtonian, oregonian, patagonian, plutonian, simonian, smithsonian, usoniam, washingtonian
Houstonian sounds like:
hasidim, hasten, haston, haughton, haxton, heaston, hechtman, heighten, hesitation, hesston, heston, higdon, histamine, histidine, hochstein, hogston, houghton, housden, houston, hueston, hughston, hugoton, huston