Palo Blanco Census Designated Place is a census located in Starr County, Texas. It appears on the Roma-Los Saenz East USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 186.46 feet (56.83 m) above sea level. The nearest populated place is Palo Blanco Colonia, approximately 0.0 miles to the SSE.