Gardiner is a city in Kennebec County, Maine, United States. The population was 5,961 at the 2020 census. Popular with tourists, Gardiner is noted for its culture and old architecture. Gardiner is a nationally accredited Main Street America community. It is included in the Augusta, Maine micropolitan New England City and Town Area.
Zip Codes in Gardiner, ME that we also serve: 04345 04359