Complete list:

Aflex, KY. Ajax, KY. Alex, OK. Alix, OK. Apex, NC and NY. Appomattox, VA. Ar-Tux, Xinjiang Uygur China. Bertrix, Belgium. Blawnox, PA. Bordeaux, France and WY. Brodnax, VA. Bronx, NY. Camp Dix, KY. Cazaux, France. Charlevoix, MI and Quebec. Chateauroux, France. Choix, Mexico. Clervaux, Luxembourg. Climax, CO GA KS KY MI MN NC NY and PA. Colfax, CA IA IL IN LA NC ND NM WA WI and WV. Comox, British Columbia. Dax, France. Delacroix, LA. Denneux, OR. Dime Box, TX. Dix, IL and NE. Dole-Tavaux, France. Essex, CA CT IA IL MA MD MO MT NC NY and VT. Evreux, France. Fairfax, CA IA MN MO OH OK SC SD VA and VT. Fifty Six, AR. Flying Fox, Northern Territory Australia. Fort Dix, NJ. Fort Knox, KY. Fox, AR MT OK and OR. Galax, VA. Haddix, KY. Halifax, KY MA NC PA VA VT and Nova Scotia. Hannacroix, NY. Helix, OR. Hendrix, OK. Herstmonceux, United Kingdom. Index, KY and WA. Knox, IN ME ND NY and PA. Lafox, IL. Ledoux, NM. Lemieux, Qeubec. Lennox, CA and SD. Lenox, AL GA IA KY MA MI MO and TN. Little Sioux, IA. Lomax, IL NC and TX. Lulea-Kallax, Sweden. Lux, MS. Lynx, OH. Maddox, MD. Max, MN ND and NE. Meaux, LA. Meraux, LA. Middlesex, NC NJ NY and VT. Modane Avrieux, France. Morlaix, France. Mount Helix, CA. Nassawadox, VA. Nerinx, KY. New Lenox, IL. Ninety Six, SC. North Middlesex, VT. Onyx, CA. Paradox, CO and NY. Pax, WV. Perigueux, France. Phenix, VA. Phlox, WI. Phoenix, AZ IL MD NY and OR. Portage Des Sioux, MO. Rax, Austria. Redfox, KY. Rex, GA NC and OR. Roubaix, SD. Rubidoux, CA. Saint Croix, IN. Salix, IA and PA. Sauze D'Oulx, Italy. Seventy Six, KY. Silex, MO. Smilax, KY. Stanwix, NY. Startex, SC. Sussex, NJ VA WI and WY. Thibodaux, LA. Wax, KY. West Halifax, VT. West Middlesex, PA. Wibaux, MT. Wilcox, NE and PA. Willcox, AZ. Wysox, PA.