Heartland Payment Systems Share: Credit Cards Heartland Payment Systems Visit Website 3470 Lindenwood Street Sioux City, IA 51104 (712) 251-4794 About Map About We are a payment processing company that started in 1997. We process over 11 million transactions per day with fair upfront pricing. We also offer payroll solutions & marketing solutions as well. What's Nearby? Distance: 5 10 15 20 25 50 mi.