Putnam County | |
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Putnam County Courthouse in Greencastle | |
![]() Location within the U.S. state of Indiana | |
![]() Indiana's location within the U.S. | |
Coordinates: 39°40′N 86°50′W / 39.67°N 86.84°W | |
Country | ![]() |
State | ![]() |
Founded | December 31, 1821 (created) April 1822 (organized)[1] |
Named for | Israel Putnam |
Seat | Greencastle |
Largest city | Greencastle |
Area | |
• Total | 482.69 sq mi (1,250.2 km2) |
• Land | 480.53 sq mi (1,244.6 km2) |
• Water | 2.16 sq mi (5.6 km2) 0.45% |
Population | |
• Total | 36,726 |
• Density | 76/sq mi (29/km2) |
Time zone | UTC−5 (Eastern) |
• Summer (DST) | UTC−4 (EDT) |
Congressional district | 4th |
Website | co |
Indiana county number 67 |
Putnam County is a county in the U.S. state of Indiana. As of 2020, 36,726 people lived there.[2] The county seat is Greencastle.[3]