Savannah, Georgia is 3.6 times larger than Pomona, California.
Area: 63 km2 calculated
Pomona is the fifth largest city in Los Angeles County, California. Pomona is located in between the Inland Empire and the San Gabriel Valley. As of the 2010 United States Census, the city's population was 149,058. Wikipedia
Area: 223 km2 calculated
Savannah is the oldest city in the U.S. state of Georgia and the county seat of Chatham County. Established in 1733, the city of Savannah became the British colonial capital of the Province of Georgia and later the first state capital of Georgia. Wikipedia