Lamorne Morris has a brother called Devon. Morris has not revealed enough identifying information regarding his sibling. However, his brother is of American nationality.

Lamorne Morris was born on August 14, 1983, in Chicago, Illinois, United States of America. Morris attended Glenbard South High School as a teenager after moving to the western suburb of Glen Ellyn.

Lamorne Morris graduated from the College of DuPage in 2003 where he studied theatre and received the Chris Farley Memorial Acting Scholarship.

Lamorne Morris’s breakthrough came when he was cast as Winston Bishop in the comedy series New Girl on Fox (2011–2018).

During the Covid-19 lockdown, Lamorne Morris co-created and starred in the 8-episode scripted action-comedy podcast Unwanted for QCODE.

In 2019, Lamorne Morris became the spokesperson for the Canadian-based Bank of Montreal and Chicago-based BMO Harris Bank.

Lamorne Morris hosted the daily music and entertainment news show BET Now. Morris also hosted the game show BrainRush on Cartoon Network as part of CN Real.