Palm Valley is a city in Cameron County, Texas, United States.

[4] According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.6 km2), all land.

As of the 2020 United States census, there were 1,413 people, 805 households, and 555 families residing in the city.

25.4% of all households were made up of individuals, and 17.2% had someone living alone who was 65 years of age or older.

[19] Palm Valley is served by the Harlingen Consolidated Independent School District.