The due date for local property taxes to be paid is May 10th. For those that miss the May 10th deadline there will be late fees as well as any processing fee if you pay by phone or online. If you would rather pay in person remember that the Putnam County Treasurer’s office can only accept checks or cash. If you are sending a payment to the treasurer’s the address you should mail to is P.O. Box 508, Greencastle Indiana 46135. If you have any questions about the process you can call the Putnam County Treasurer’s Office at (765) 653-4510 or click on the link provided to you on this article on wrebfm.com for more information. link: www.co.putnam.in.us/Treasurer/.