Keystone Connections

Contact your tax officer: By phone at (724) 978-0300

By fax at (724) 978-0339

or visit the Keystone Connection ONLINE inquiry form


To contact the proper Keystone office or department by mail, please correspond to:

Individual Final Tax Return
PO Box 509 (use if requesting a refund)
PO Box 529 (use if return sent with payment)
PO Box 549 (use if no payment/no refund)
Irwin PA 15642

Individual Quarterly Estimates
PO Box 539
Irwin PA 15642

Tax Return Supporting Documentation
(if filed separately from tax return)
PO Box 506
Irwin PA 15642

Late-Filed Individual Tax Return
PO Box 504
Irwin PA 15642

Employer Withholding Tax
PO Box 559
Irwin PA 15642

Business Privilege Tax
PO Box 489
Irwin PA 15642

Employer Compliance
PO Box 506
Irwin PA 15642

Per Capita Tax
PO Box 519
Irwin PA 15642

Utilities
PO Box 449
Irwin PA 15642

Current Real Estate
PO Box 505
Irwin PA 15642

Tax Certifications
PO Box 514
Irwin PA 15642

Delinquent Wage
PO Box 499
Irwin PA 15642

Delinquent Real Estate
PO Box 426
Irwin PA 15642

Delinquent Per Capita Tax
PO Box 502
Irwin PA 15642