The bulk of Chatham County, an area with a northern border in a line from Bloomingdale to Tybee Island, is located in the Ogeechee River Coastal subbasin of the Ogeechee River basin.

[5] As of the 2020 United States census, there were 295,291 people, 107,987 households, and 65,889 families residing in the county.

The former name of the system, "Chatham Effingham Liberty Regional Library," described this collaboration.

In 2002, the name was changed to Live Oak, which reflects the personality of the region, as well as the life and growth of its branches.

[18] At the beginning of the 20th century, city leaders in Savannah began to discuss the need for a public library.

[20] In a joint meeting of committee members from the society and the city of Savannah, a free public library was established that would prove to be of great value to the community.

Since then, Chatham has tended to vote substantially more for Democrats at the presidential level than the state as a whole.

This culminated in Joe Biden's winning 58.6% of the vote in the 2020 election, outdoing Jimmy Carter's 57% in 1976 for the best performance of a Democrat in the county since Franklin Roosevelt in 1944.