County Assessor Background Image

About Us

Assessor's home page is www.assess.co.polk.ia.us.

Assessor Duties

The assessor is charged with several administrative and statutory duties; however, the primary duty and responsibility is to cause to be assessed all real property within his/her jurisdiction except that which is otherwise provided by law. This would include residential, multi-residential, commercial, industrial and agricultural classes of property.

  • Real Property is revalued every two years
  • The effective date of the assessment is January 1st of the current year.
  • The assessor determines a full or partial value of the new construction, or improvements depending upon the state of completion as of January 1st.

The Polk County Assessor is  Randy Ripperger, CAE, ICA.  
Assessment Information 

                  Polk County Administration Building,
                  111 Court Ave, Room 195, 
                  Des Moines IA 50309

                  Hours: 7:00 am to 5:00 pm, Monday through Friday
                  Office: (515) 286-3014 | Fax: (515) 286-3386
                  Email: polkweb@assess.co.polk.ia.us


Due to the growing concern over the COVID-19 virus, all business with the Polk County Assessor’s office will be conducted via telephone, internet, fax, or mail only. At this time our office will be closed to the public