305 Seguin Loop, Rio Grande City, TX 78582 For Sale MLS ID #452017, Sergio Guerra, B-Kan Realty $232,500 3 bd|2 ba|1.4k sqft 83 Santa Elena Ln, Rio Grande City, TX 78582 For Sale MLS ID #455422, Kenneth De La Cerda, Big Realty $169,900 3 bd|3 ba|1.5k sqft 136 E Gonza...