Cass County Illinois Official Website
Welcome to Cass County! Formed in 1837, we are a small, rural county along both the Illinois and Sangamon Rivers, and straight west of the capital city of Springfield. As of the 2010 US Census we have a population of 13,642, making us one of the least populated counties in Illinois. Although we are small in size, we have a large immigrant population that has grown in the last twenty years, making Cass County one of the most diverse counties in downstate Illinois. We also represent a top 10% Health Department in the US, in the Cass County Health Department.
Departments
Check out all of our Departments and Department Heads! Their contact information is on each of their webpages.
read more >Elected Officials
Check out all of our Elected Officials! Their contact information is on each their webpages.
read more >County Info
Check out our County Information, which includes meeting minutes/agendas, budgets, audits, and different facts about Cass County!
read more >Contact Us
Check out the hours, address, and phone number of the Courthouse here! We would be glad to hear from you!
read more >INFORMATION
2024-Real Estate Taxes
1st Installment due date: June 27, 2025
2nd Installment due date: September 05, 2025
2025 Mobile Home Taxes due date: September 05, 2025
-By mail to Cass County Collector
-In person at Cass County Treasurer’s Office
-At any bank in Cass County
-Cash, check, money order and cashier’s checks are all acceptable forms of payment
-Online at https://casscountyiltax.us/#/
-By phone 1-217-439-4109 (you will need your parcel number and amount)
-Credit/Debit cards are accepted at Treasurer’s Office, online or by phone. A non-refundable convenience fee of 2.5% plus $1.50 per transaction is charged on all credit/debit card payments
-E-checks are accepted online with a $2.00 fee
To contact emergency services, please call "911" if possible. Otherwise, see the non-emergency numbers that are listed. Cass County Sheriff's Department number is (217) 452-7718, which is listed below.
IMPORTANT NUMBERS
| Town | Fire | Police |
|---|---|---|
Arenzville |
(217) 997-5858 |
(217) 452-7718 |
Ashland |
(217) 476-3317 |
(217) 476-8191 |
Beardstown |
(217) 323-1191 |
(217) 323-3131 |
Chandlerville |
(217) 458-2400 |
(217) 452-7718 |
Virginia |
(217) 452-7500 |
(217) 452-3500 |