Linn, formerly San Manuel-Linn, is a census-designated place (CDP) in Hidalgo County, Texas, United States.

Linn is in northern Hidalgo County at 26°33′52″N 98°7′45″W / 26.56444°N 98.12917°W / 26.56444; -98.12917 (26.564558, -98.129217),[2] along U.S. Route 281, State Highway 186, and FM 1017.

[1] The climate in this area is characterized by hot, humid summers and generally mild to cool winters.

[3] Linn first appeared as a census designated place as San Manuel-Linn in the 2000 U.S.

[16] As of the 2020 United States census, there were 733 people, 239 households, and 157 families residing in the CDP.

The community is served by the Edinburg Consolidated Independent School District (ECISD).

All of Hidalgo County is in the service area of South Texas College.