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Welcome to Adams County!


While the Courthouse is closed to visitors, all employees are still working in their offices. It may be an option to make an appointment to conduct business, but please call ahead. Here are some things you need to know:

**Property Tax News** The governor signed a proclamation that will waive penalty on the March property tax installment as long as it’s paid by April 16th, 2020. Please note, your taxes will still be considered delinquent as of April 1st, 2020, you simply will not be charged penalty until April 17th, 2020.

See Treasurer’s office department page for information regarding DOT Announcements.

Auditor’s Office: The candidate filing deadlines for the Primary and General Elections remain the same. March 25th for the Primary and March 20th for the General. These papers MUST be filed in person. Therefore, before coming to the Courthouse, please call the Auditor’s Office to schedule a time to file these documents. Our number is 641-322-3340.

Adams County was established by the state legislature in 1851 and named in honor of the second President of the United States, John Adams, or his son, the sixth President, John Quincy Adams (sources differ). The county was finally organized and separated from Pottawattamie County on March 12, 1853. Its original size was later reduced by the creation of Montgomery and Union counties.

The first county seat was Quincy. In 1872, it was moved to Corning.

Learn more >

Courthouse Address:

500 9th Street
Corning, Iowa 50841


Mon-Fri: 8:30 am to 4:30 pm

County Attorney
Mon-Thurs: 8:30 am to 4:30 pm Friday: 8:30 am to Noon

Veteran’s Affairs
Mon-Thurs: 8:00 am to 11:00 am

State Offices
Mon-Fri: 8:00 am to 4:30 pm

Law Enforcement


We are temporarily closed to visitors due to COVID-19. Please contact departments for questions.

Donate Personal Protective Equipment to Assist in COVID-19 Response


Property Tax (2nd half) due by March 31st.

Alert Iowa is a statewide mass notification and emergency messaging system used to quickly disseminate emergency information. The notification system is available, free of charge, to all Adams County residents.

Sign up for Alert Iowa.

Cities of Adams County