Timberlane is a census-designated place (CDP) in Jefferson Parish, Louisiana, United States.

[4] According to the United States Census Bureau, the CDP has a total area of 1.5 square miles (3.9 km2), all land.

[4] The 2019 American Community Survey estimated 9,950 people lived in the CDP,[9] down from 10,243 at the 2010 U.S.

[10] The median household income was $54,702 and 8.6% lived at or below the poverty line in 2019.

[16] Previously a part of Timberlane was zoned to Helen Cox High School.