Rancho Chico Census Designated Place is a census located in San Patricio County, Texas. It appears on the Sinton East USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 49.21 feet (15.00 m) above sea level. The nearest populated place is Third Rancho Chico Addition Colonia, approximately 0.1 miles to the NNE.