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Harper County District Court

Filing information for Harper County District Court in Buffalo, OK. Part of the Harper County small claims court system.

E-Filing

Not available

Max Claim

$10,000

Courthouse Details

Harper County District Court

311 S.E. 1st St.

Buffalo, OK 73834

Mailing Address

P.O. Box 347

Buffalo, OK 73834

Phone: (580) 735-2010Fax: (580) 735-2787

Hours: 8:00 a.m. - 5:00 p.m., Monday - Friday, except legal holidays

Area Served

Harper County

How to File at Harper County District Court

File in person

Bring your completed forms to the courthouse during business hours.

File by mail

Most small claims courts accept filing by mail — check with this court first. Typically you mail your completed forms with the filing fee plus a self-addressed stamped envelope for your returned copies.

Ready to take action?

A demand letter often settles disputes before a case is ever filed — and it only takes a few minutes.

Read the demand letter guide

For statewide rules, see the full Oklahoma small claims court guide →

Data verified May 6, 2026.