Lutherville-Timonium was a census-designated place (CDP) in Baltimore County, Maryland, United States, for the 2000 census.

For the 2010 census the area was split into two CDPs, the unincorporated communities of Lutherville and Timonium.

The Maryland State Fair is held in Timonium each year near Labor Day.

[1] According to the United States Census Bureau, the CDP had a total area of 7.4 square miles (19 km2), all of it land.

26.3% of all households were made up of individuals, and 14.7% had someone living alone who was 65 years of age or older.