| Keystone, Indiana | |
|---|---|
|   Post office in Keystone, Indiana | |
|   Wells County's location in Indiana  | |
| Coordinates: 40°35′37″N85°15′37″W / 40.59361°N 85.26028°W | |
| Country | United States | 
| State | Indiana | 
| County | Wells | 
| Township | Chester | 
| Elevation | 866 ft (264 m) | 
| Time zone | UTC-5 (Eastern (EST)) | 
| • Summer (DST) | UTC-4 (EDT) | 
| ZIP code | 46759 | 
| FIPS code | 18-39654 [2] | 
| GNIS feature ID | 2830580 [1] | 
Keystone is an unincorporated community in Chester Township, Wells County, in the U.S. state of Indiana. [1]
A large share of the early settlers being natives of Pennsylvania caused the name of Keystone to be selected, after the Keystone State. [3]
The post office at Keystone has been in operation since 1871.
The United States Census Bureau delineated Keystone as a census designated place in the 2022 American Community Survey. [4]