Odessa, originally named Millcreek, was renamed in 1855 by its postmaster to commemorate the 1854 British siege of the Black Sea port at Odessa in Ukraine during the Crimean War.
The village is home to Ernestown Secondary School, which services about 650 students from Loyalist Township (formerly Ernestown Township), Napanee and Stone Mills.
The township offices and a fire hall are on Odessa's Main Street.
There is a small fairground.
An Ontario Provincial Police detachment serves Ontario Highway 401 and home to Tactics and Rescue Unit Eastern Region.

The water supply of the community of Odessa within the Township of Ernestown was studied in 1972, which led to the planning of infrastructure improvements.
The highest point in the village is the water tower.
 Visible for several kilometres in all directions, the water tower has been outfitted as a wireless communications facility.
The village bills itself as "home of the Babcock Mill," which historically was powered by Millhaven Creek which runs through the heart of Odessa.
Odessa, originally named Millcreek, was renamed in 1855 by its postmaster to commemorate the 1854 British siege of the Black Sea port at Odessa in Ukraine during the Crimean War. The village is home to Ernestown Secondary School, which services about 650 students from Loyalist Township (formerly Ernestown Township), Napanee and Stone Mills. The township offices and a fire hall are on Odessa's Main Street. There is a small fairground. An Ontario Provincial Police detachment serves Ontario Highway 401 and home to Tactics and Rescue Unit Eastern Region.
The water supply of the community of Odessa within the Township of Ernestown was studied in 1972, which led to the planning of infrastructure improvements. The highest point in the village is the water tower.  Visible for several kilometres in all directions, the water tower has been outfitted as a wireless communications facility. The village bills itself as "home of the Babcock Mill," which historically was powered by Millhaven Creek which runs through the heart of Odessa.
Loyalist, Ontario