93407. 1  Same zip code Suburbs Cal Poly Slo, San Luis Obispo, Sn Luis Obisp. 2  Other Locations near Cal Poly University CA Avila Beach, Cal Poly Slo, Cal Poly Student Dorms, California Mens Colony Slo, San Luis Obispo, Slo County Govt Ctr Zip Code, Sn Luis Obisp.al Poly University is in San Luis Obispo, California in the Pacific West region of the USA.