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Illinois County
Carroll County, Illinois
Mount Carroll's frozen-in-time 19th-century college town and the Mississippi Palisades - Mount Carroll is one of the most remarkably preserved antebellum county seats in the Midwest; Mississippi Palisades State Park features 200-foot limestone bluffs overlooking the river toward Iowa; and the Apple River Fort State Historic Site commemorates the 1832 Black Hawk War battle fought in the county.
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Office: Carroll County Sheriff’s Office – 301 North Main Street, Mount Carroll, IL 61053 | (815) 244-2635 / (815) 244-0267; Sheriff Ryan Kloepping, Chief Deputy Ryan Lambert. 28 staff serving roughly 16,674 residents. Jail capacity 26 beds.
Notes: For an active emergency, call 911.
Roads & Utilities
ROADS & TRANSPORTATION
Roads: SR-78 and US-52/64 serve Mount Carroll, the county seat, located slightly northwest of the county’s center; Savanna is the county’s largest city.
Notes: Carroll County was formed in 1839 from Jo Daviess County, named for Charles Carroll of Carrollton, a signer of the Declaration of Independence and, upon his 1832 death, the last surviving signer. Mount Carroll began as a mill town around 1841; an 1843 referendum moved the county seat there from nearby Savanna. The town incorporated in 1855 and became a city in 1867 under first mayor Nathaniel Halderman, a co-founder of the local mill.
Business & Permits
BUILDING & PERMITS
Office: Carroll County Courthouse – Courthouse Square, Mount Carroll, IL (built 1858, architects Olmstead and Nicholson (per Wikipedia; also cited as “Glasted & Michelson”), continuously used since construction; National Register of Historic Places since 1973). Notably served as a barracks for county troops during the Civil War prior to their commissioning.
Notes: Mount Carroll is a genuinely well-preserved 19th-century town, with the Mount Carroll Historic District (118 acres, National Register of Historic Places since 1980) encompassing the downtown courthouse square, a residential district, and the original campus of Chicago’s Shimer College (established here in 1853, later relocated to Waukegan and then Chicago), now home to the Campbell Center for Historic Preservation Studies. A well-preserved 19th-century Carroll County Jail and Sheriff’s Residence still stands as a local attraction, offering visitors an unfiltered look at frontier-era law enforcement.
Veterans Services
VETERANS SERVICES
Office: Carroll County Veterans Assistance – confirm current contact via carroll-county.net.
Libraries
LIBRARIES
Mount Carroll Public Library (Mount Carroll) – confirm current address/phone via the county library system.
Parks & Recreation
PARKS & RECREATION
Key Assets: The Mount Carroll Historic District, the old Carroll County Jail and Sheriff’s Residence, the Campbell Center for Historic Preservation Studies, and downtown Mount Carroll’s antique shops are the county’s premier heritage attractions.
Notes: The genuine, remarkably intact 19th-century character of Mount Carroll – from its historic district to its preserved frontier-era jail – is among the standout local facts covered in this project.
GIS & Maps
GIS & MAPS
Appraisal/Parcel Search: Carroll County Assessor’s Office – confirm current contact via carroll-county.net.
Animal Services
ANIMAL SERVICES
Confirm current dedicated shelter contact via carroll-county.net; Carroll County Sheriff’s Office for animal control arrangements.
Environmental & Waste
ENVIRONMENTAL / WASTE MANAGEMENT
Office: Carroll County Environmental Health – confirm current contact via carroll-county.net.
NOTES: Carroll County is the eighth county completed in Illinois’s Round 3 v2 redo, under the A+ sourced standard established for this project. The genuine, remarkably intact 19th-century character of Mount Carroll is among the standout local facts covered in this project. All contact information above was sourced via web search as of early August 2026 and should be reconfirmed directly with the relevant office before a visit, deadline-sensitive filing, or emergency-adjacent decision.
About Carroll County
Mount Carroll (county seat, population ~1,600) is remarkably preserved – an 1850s-1880s era college town frozen in architectural time, with Victorian-era commercial buildings and a community that maintained its 19th-century character through a combination of economic stagnation and preservation instinct. Mississippi Palisades State Park – north of Savanna – features dramatic limestone bluffs above the Mississippi with extraordinary views toward Iowa. Savanna (population ~3,000) is the county’s Mississippi River port community.
All Services
Browse every category and topic available for this county.
Carroll County Supervisor of Assessments at 301 N. Main Street, Mount Carroll, IL 61053, phone 815-244-0230. Circuit Court at same address handles probate.
Marriage licenses, divorce records, and birth & death certificates are handled by the following office(s):
COUNTY CLERK (Records, Vital Records, Elections)
301 N. Main St., Mount Carroll, IL 61053
(815) 244-0221
CIRCUIT CLERK (Court Records, Marriage Licenses)
301 N. Main St., Mount Carroll, IL 61053
(815) 244-2133
ELECTIONS (County Clerk)
301 N. Main St., Mount Carroll, IL 61053
(815) 244-0221
Genealogy
County-level record sources
Carroll County Circuit Clerk (probate/estate case files – see Probate section above).
Carroll County Clerk & Recorder, P.O. Box 152, Mount Carroll, IL 61053, (815) 244-0221 – a separate office holding deeds and real estate transaction records, with a tract index tracing title back to original government grants.
Local societies
No dedicated Carroll County genealogical society was confirmed in available directories.
Probate & Estate
Losing someone and having to deal with courts and paperwork at the same time is hard. This section won’t make that easier, but it should tell you what to expect, what it costs, and where to go – so at least you’re not walking in blind.
Where to go
Carroll County Circuit Clerk (Fifteenth Judicial Circuit) 301 North Main Street, Mount Carroll, IL 61053 (815) 244-0230
Carroll County is in northwestern Illinois. The 1858 Carroll County Courthouse (National Register of Historic Places) has been in continuous use since it was built, and served as a Civil War troop barracks. The Lorado Taft Monument, a Civil War memorial, was added to the courthouse grounds in 1891.
Step 1: figure out which path applies
Illinois has NOT adopted the Uniform Probate Code and is not a community property state – it follows common law property principles. Illinois probate is governed by the Probate Act of 1975 (755 ILCS 5/). Two main paths:
Small Estate Affidavit – for estates where personal property (excluding real estate) is valued at $150,000 or less (raised from $100,000 effective August 15, 2025), with no unresolved debts or claims and no real estate involved. No formal court probate is required.
Formal Probate (Independent or Supervised Administration) – required when the estate doesn’t qualify for the small estate affidavit. Most Illinois probate cases proceed under Independent Administration, letting the estate representative act without prior court approval for most routine actions.
Step 2: filing for formal probate
File the decedent’s original will (if one exists) with the Carroll County Circuit Clerk, where the decedent resided at death.
Petition the court to open the estate and appoint an executor (if there’s a will) or an administrator (if intestate).
The court issues Letters of Office (Letters Testamentary or Letters of Administration) appointing the representative.
Publish notice to creditors and unknown heirs as required by Illinois law.
Under Independent Administration, the representative marshals assets, pays valid debts and taxes, and distributes the remaining estate without needing court approval for each step.
File a final accounting or closing documents to formally close the estate.
What it costs
Illinois imposes its own state estate tax on estates valued above $4 million, with rates up to 16%. There is no Illinois inheritance tax.
Filing fees vary by county – confirm current amounts with the Carroll County Circuit Clerk.
Most uncontested probate proceedings in Illinois can be completed within about a year.
Probate filings, estate administration, and guardianship matters are handled by the following office(s):
Public Safety & Arrests
Arrest records, inmate search, and law enforcement services are handled by the following office(s):
SHERIFF
301 N. Main St., Mount Carroll, IL 61053
(815) 244-2158
Elections & Voting
Voter registration, polling locations, and elections information are handled by the following office(s):
COUNTY CLERK (Records, Vital Records, Elections)
301 N. Main St., Mount Carroll, IL 61053
(815) 244-0221
ELECTIONS (County Clerk)
301 N. Main St., Mount Carroll, IL 61053
(815) 244-0221
Health & Human Services
Offices & Contacts
Health services, social services, and assistance programs are handled by the following office(s):
Carroll County Health Dept
(815) 244-2346
IL DCFS — Freeport
(815) 235-0550
IL Medicaid
(800) 843-6154
CGH Medical Center (Sterling)
cghmc.com
Public Health Information
PUBLIC HEALTH
Office: Carroll County Health Department – confirm current contact via carroll-county.net.
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Last verified June 2026
County Facts
County Seat: Mount Carroll
Population: 14,500
Area: 449 mi²
Established: 1839
Tier: 3
Public Records
TruthFinder
Search public records for Carroll County residents.
