PENNINGTON COUNTY – Pennington County residents can once again pay their property taxes online following the restoration of the County’s online property tax payment system. The online payment portal is now available at https://public.penncosd.gov/propertytax and can also be accessed through links on the Pennington County website, including the homepage and Treasurer’s Office pages.  “We know how important the online payment option is locally and many customers have grown to appreciate it, especially as we approach the property tax deadline,” said Annette Brant, Pennington County Treasurer. “We appreciate the community’s patience with our office as the County’s I.T. team focused on not simply getting it back online as quickly as possible, but on making sure the appropriate security measures were in place before making it available to the public.” The restoration comes ahead of the October 31 property tax payment deadline. Residents are encouraged to plan ahead and use whichever payment option works best for them. Ways to Pay Property Taxes

  • Online Property taxes can be paid online at https://public.penncosd.gov/propertytax. Residents can choose to either pay with a credit card which includes a 2% service charge, or use an E-Check at no additional fee.
  • In Person Payments can be made during regular business hours, Monday through Friday from 7 a.m. to 4 p.m., at:

    Pennington County Administration Building
    900 Concourse Drive, Suite 150
    Rapid City, SD 57703
  • Property Tax Drop Boxes Property tax drop boxes are available 24 hours a day, seven days a week through midnight on October 31 at:

Only property tax payments should be placed in these drop boxes. Payments should include the applicable Tax ID Number(s) or payment coupons and a current phone number. Residents requesting a receipt should indicate that with their payment.
Payments placed in the drop boxes after midnight on October 31 will be subject to interest.

  • By Mail Payments may be mailed to:
    Pennington County Treasurer
    PO Box 6160
    Rapid City, SD 57709-6160

    Mailed payments should include the payment coupons for each Tax ID Number being paid and must be postmarked no later than October 31 to avoid interest. Be aware of the USPS’s new procedure of not postmarking until they are actually processing. We encourage mailing early to avoid interest.

    Residents should make sure they are using the current mailing address for the Treasurer’s Office, particularly when using online banking services. Payments sent to previous County addresses on Saint Joseph Street or Kansas City Street may no longer be forwarded by the U.S. Postal Service and could be returned to sender.
  • By Phone Payments may also be made by calling the Treasurer’s Office at 605-394-2163. Phone payments must be completed by 3:30 p.m. MT on October 31. A 2% convenience fee applies to credit card payments made by phone.
    Residents are encouraged to plan ahead, as call volumes typically increase as the October 31 deadline approaches.

  For additional questions regarding property tax payments, contact the Pennington County Treasurer’s Office Monday through Friday at 605-394-2163 between 8:05 a.m. and 3:30 p.m. MT.