75080, TX Real Estate & Homes For Sale Public Schools in Richardson, 75080 The school district for Richardson is Richardson ISD (RISD) More Real Estate Resources For Richardson 75080 Richardson New Homes For Sale Richardson Condos & Townhomes For Sale 75080 Homes For Sale 75081 Homes For Sale 75082 Homes For Sale Plano Homes For Sale Garland Homes For Sale