Pine Mountain Valley, GeorgiaPine Mountain Valley is located in Harris County, Georgia, United States. Its ZIP code is 31823.GeographyPine Mountain Valley is located at 32° 47′ 55″ N, 84° 49′ 24″ W. The community is located at the intersection of Georgia State Routes 116 and 354. GA-116 runs from west to east through the community, leading east to Shiloh and southwest to Hamilton, the Harris County seat. GA-354 runs northwest to the city of Pine Mountain. The community is located in the Piedmont region of the state just to the south of the Pine Mountain Range.