300 Main Street, Suite 200, Dubuque, IA 52001
Mon – Thurs 8 am – 5 pm, Fri 8 am – 12 pm


1320 Mt Pleasant St
Dubuque, IA 52001
(563) 543-2730
Kim Tully works remotely, to get in touch to set an appointment please email or call.
  • About

    A move back to Iowa and passion for people brought Francis and Jackie Costello the opportunity to start Postal Source. 16 years later, this family-owned business has broken free of manufacturer quotas. Not only are we more concerned with meeting customer commitments than manufacturer’s mandates, we leverage our independence for your benefit. Through customized solutions, specially tailored SLA’s, best in class technology and accessible, responsive support staff, we give you and your business peace of mind.

    Utilizing a different approach to business, we strive to be your partner.

    Contact your Dubuque representative, Kim Tully, today!

  • Whom to Contact