Las Palmas II is a census-designated place (CDP) in Cameron County, in the U.S. state of Texas. (The "II" distinguishes the CDP from Las Palmas, a CDP in Zapata County.) As of the 2020 census, Las Palmas II had a population of 891. Prior to the 2010 census, the community was part of the Las Palmas-Juarez CDP. It is part of the Brownsville–Harlingen Metropolitan Statistical Area.
Las Palmas is in western Cameron County, bordered to the north by Harlingen and to the east by Juarez.
According to the United States Census Bureau, the Las Palmas II CDP has a total area of , of which is land and , or 0.94%, is water.
Las Palmas II first appeared as a census designated place in the 2010 U.S. census after the Las Palmas-Juarez CDP was split into the Las Palmas II and Juarez CDPs.