Welcome to Marshall County, Iowa
Sep
18
Iverson Observatory - Green Castle Recreation Area
Iverson Observatory Grand Opening
Iverson Observatory - Green Castle Recreation Area
2891 Green Castle Rd
Gilman, IA
Map to Event
September 18, 2026
7:30 pm
Join us for a night to celebrate the grand opening of Marshall County Conservation's new Iverson Observatory. The Amateur Astronomers of Central Iowa will help you explore the night sky at our new observatory! This beginner-friendly "Intro to Astronomy" program offers a relaxed and engaging opportunity to learn the basics of stargazing. Please bring a lawn chair.
No reservations needed for this event.
Posted by: Conservation
Sep
22
Marietta Sand Prairie
Brown Bag Bunch - Hidden Life of the Prairie
Marietta Sand Prairie
1744 Knapp Ave
Marshalltown, IA
Map to Event
September 22, 2026
11:30 am · 12:30pm
Registration Fee: Free
Registration Deadline: September 17 by 4:00 p.m.
Join us for a relaxing prairie walk as we uncover the hidden life all around us! From blooming wildflowers and busy pollinators to singing birds and fascinating insects, discover the plants and wildlife that make Iowa prairies such vibrant and important ecosystems. Limited binoculars will be available to borrow during the program.
TO REGISTER FOR EVENTS: CALL 641-752-5490, EMAIL MCCB@MARSHALLCOUNTYIA.GOV,
OR TEXT ONLY 641-758-9777 BY THE DEADLINE OF THE EVENT
Posted by: Conservation
Sep
23
Marshall County Courthouse Board Room
Board of Supervisors Meeting
Marshall County Courthouse Board Room
1 E. Main St.
Marshalltown, IA
Map to Event
September 23, 2026
9:00 am
Meetings are held every other Wednesday at 9:00 AM in the Board Room at the courthouse.
Watch live on YouTube or join via Zoom (details on the agenda).
Posted by: Board of Supervisors
Sep
23
Green Castle Recreation Area - Boat Dock
Kayaking
Green Castle Recreation Area - Boat Dock
2891 Green Castle Recreation Area
Gilman, IA
Map to Event
September 23, 2026
5:30 pm · 7:00pm
Join us as we explore Marshall County waters with kayaks. This family-friendly event is designed to help participants learn the basics of kayaking and stay safe on Iowa's waters. There is no fee for this program; however, you must pre-register to reserve one of the limited spots.
Registration Fee: Free
Registration Deadline: September 18 by 4:00 p.m.
TO REGISTER FOR EVENTS: CALL 641-752-5490, EMAIL MCCB@MARSHALLCOUNTYIA.GOV,
OR TEXT ONLY 641-758-9777 BY THE DEADLINE OF THE EVENT
Posted by: Conservation
About the Courthouse
Rebuilding Our Tower
After a 2018 tornado ravaged downtown Marshalltown, the courthouse bell tower was carefully reconstructed. View our photo gallery and see behind-the-scenes of our historic Courthouse.
Full Courthouse History
About Marshall County
Established in 1846, Marshall County is a collection of 13 communities and is home to over 40,000 residents. The county was named after John Marshall, Chief Justice of the United States Supreme Court. Marshall County is administered by a three-member Board of Supervisors who are elected for four-year terms. Other elected officials include the Attorney, Auditor/Recorder, Sheriff, and Treasurer.