Clark County, Illinois: Local Government, Directory & Public Records

Sitting right along the Wabash Valley and anchored by Marshall, Clark County Illinois has always been defined by quiet farmland, rich local heritage, and small-town roots running back to 1819. Whether you need to settle a property tax bill, look up court filings at the courthouse, or just find the right county office phone number, hunting down basic local details shouldn’t be a hassle. This guide breaks down everything you need—from public records and county services to local government contacts—making it easy to find what you’re looking for without the runaround.

Clark County History & Local Roots

Officially established in 23 March 1819—just a year after Illinois became a state Clark County Illinois is one of the oldest organized territories in the region. Named after Revolutionary War hero George Rogers Clark, the county’s original borders once stretched all the way up toward Lake Michigan before modern lines were drawn

The County Seat: Marshall became the official county seat back in 1838, growing into the central hub for local courts, trade, and community life.

The Historic National Road: U.S. Route 40 runs right through the heart of the county. Back in the 1800s, this pioneer highway ( National Road ) brought thousands of early settlers through the area.

Farming Heritage: Built on the rich soil of the Wabash Valley, family agriculture and local trade have kept Clark County grounded for over two centuries.

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Historical Society & Local Museum

The Clark County Historical Society preserves the area’s pioneer heritage, local family histories, and regional artifacts. Based out of the historic 1838 Manly-McCann House in Marshall, the Society operates the county’s primary museum and research archives

Genealogy & Records: Offers public access to family trees, land deeds, cemetery indexes, and archived local newspapers.

Museum Exhibits: Displays pioneer household items, early agricultural tools, a 1853 log house, and National Road history.

Location: S. 4th St, Marshall, Illinios

Geography & Neighboring Counties

Sitting right along the Illinois-Indiana border, Clark County covers roughly 505 square miles of classic Midwestern farmland, timbered creek beds, and small-town countryside. Its county seat, Marshall, sits just 20 minutes west of Terre Haute, Indiana, making the area an important transit point for cross-border commuters and regional freight

Bordering Counties.

Clark County shares borders with five neighboring Illinois counties and two across the state line in Indiana

North: Edgar County

West: Coles County and Cumberland County

South: Jasper County and Crawford County

East (Indiana): Vigo County and Sullivan County

Main Roads & Waterways

Interstate 70 & U.S. 40: These two main routes run straight through the middle of the county east-to-west, connecting Marshall directly to Terre Haute on one side and Effingham on the other.

Illinois Route 1: The primary north-south highway cutting through downtown Marshall, taking you north toward Paris or south toward Robinson.

Rivers & Creeks: The Wabash River forms part of the eastern border with Indiana. Inland, Hurricane Creek and tributaries of the Embarras River handle most of the local drainage for county farm fields.

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Population & Community Profile

Clark County is home to about 15,000 residents, ranking it 71st in population out of Illinois’s 102 counties. It’s a quiet, rural community where most folks live in small towns or on surrounding farm acreage.

Key Communities

Marshall: County seat and primary hub for local government, dining, and shops (pop. ~3,900).

Casey: Famous for its oversized roadside attractions and historic downtown.

Martinsville: Small farming community located along Interstate 70.

Rural Villages: Westfield, West Union, and Darwin round out the unincorporated farming areas.

Local Economy & Commuting

Primary Industries: Corn and soybean farming, light manufacturing, local school districts, and small retail.

Commuter Hubs: Many residents commute 20 minutes east into Terre Haute, Indiana, or west toward Mattoon and Effingham for work.

Lifestyle: Low cost of living with an overall index around 84 tight-knit neighborhoods, and a quiet Midwestern pace.

Land Boundaries & GIS Property Tax Search

Looking up parcel boundaries, ownership info, or tax records in Clark County is straightforward once you know which public system to use.

Supervisor of Assessments & Esri ArcGIS Mapping

For property maps, valuations, and parcel boundaries, local officials and land researchers rely on Esri mapping data. You can access interactive spatial layers and land records directly through the Clark County ArcGIS Hub.

What you can look up: Interactive satellite layers, lot dimensions, boundary lines, and parcel Property Index Numbers (PINs).

Farmland & Exemption Files: Review agricultural soil ratings and apply for standard homestead or senior property tax exemptions through the Supervisor of Assessments office.

Tax Records & DEVNET Portal Search

To view current tax bills, historical payments, and official assessment valuations, Clark County uses the Clark County DEVNET Portal.

In-Person Office Location & Contact

While DEVNET provides the web software, DEVNET does not maintain a physical branch in the county. Local assessment files and physical property tax records are managed directly at the courthouse by the Clark County Clerk and Recorder Click to open side panel for more information

Address: 501 Archer Ave, Marshall, IL 62441

Phone: (217) 826-8311

Office Hours: Monday – Friday, 8:00 AM – 4:00 PM

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Clark County GIS & Interactive Map

For aerial views, spatial layers, and property boundary lines, Clark County provides public mapping data managed through Esri’s ArcGIS platform

Clark County GIS Portal: Access interactive map layers to view satellite imagery, township lines, section overlays, and agricultural soil classifications.

Map Search Options: Locate specific land plots by entering a owner name, parcel location, or Property Index Number (PIN).

GIS Support: Parcel spatial mapping and layer updates are managed by the Supervisor of Assessments office at (217) 826-5815.

County Courthouse & Circuit Clerk

The historic Clark County Courthouse serves as the administrative seat for county government, judicial hearings, and public record filings

Courthouse Location: 501 Archer Ave, Marshall, IL 62441 (Hours: Monday – Friday, 8:00 AM – 4:00 PM).

Clark County Circuit Clerk Portal: Access legal e-filing details, court dockets, traffic ticket information, and case search directories managed through the 5th Judicial Circuit.

Direct Office Line: (217) 826-2811

Email Contact: circuitclerk@clarkcountyil.org

Education & Public Schools

Public education across Clark County is served by four unit school districts

Marshall CUSD #C-2: Serves eastern Clark County.

District Office: 503 Pine St, Marshall, IL | (217) 826-5511

Marshall High School: 806 N 6th St, Marshall, IL

Casey-Westfield CUSD #C-4: Serves western Clark County.

District Office: 401 E Main St, Casey, IL | (217) 932-2175

Casey-Westfield High School: 306 E Edgar Ave, Casey, IL

Martinsville CUSD #C-3: Serves central Clark County.

District Office: 255 W Cumberland St, Martinsville, IL | (217) 382-4132

Martinsville High School: 300 W Cumberland St, Martinsville, IL

Hutsonville CUSD #1: Based in neighboring Crawford County, serving southern portions of Clark County.

District Office: 500 W Clover St, Hutsonville, IL | (618) 563-4913

State Performance Records: Access official district metrics, testing data, and state report cards via the Illinois State Board of Education (ISBE).

Healthcare Department & Local Clinics

Clark County Health Department: Public health programs, immunizations, WIC assistance, and environmental inspections.

Address: 997 N York St, Martinsville, IL

Phone: (217) 967-2243

Emergency Medical Services (EMS): 24/7 ambulance coverage coordinated with local municipal fire districts.

Hospitals & Outpatient Clinics: Local clinics in Casey, Marshall, and Martinsville handle routine family care, while specialized emergency care is provided by nearby regional hubs like Sarah Bush Lincoln Health Center or Horizon Health.

Supervisor of Assessments (Assessor)

The Supervisor of Assessments oversees property valuations, maintains parcel maps, and processes property tax exemptions across Clark County

Clark County Supervisor of Assessments: Evaluates real estate fair market value, processes tax exemptions (Homestead, Senior, Veteran), and manages county GIS parcel mapping.

Address: 501 Archer Ave, Marshall, IL 62441 (Courthouse, Room 202)

Phone: (217) 826-8311

Township Assessors: Local township assessors track initial construction, additions, and physical changes to properties within their respective townships.

Assessment Appeals: Property owners can appeal property valuations through the Clark County Board of Review within 30 days of the annual assessment publication.

Clark County Clerk & Public Records

The Clark County Clerk and local administrative offices maintain vital statistics, manage land records, and oversee regional elections across the county

Clark County Clerk & Recorder: Manages local elections, issues marriage licenses, records land deeds, and maintains official birth and death certificates

Address: 501 Archer Ave, 1st Floor, Room 3, Marshall, IL 62441

Phone: (217) 826-8311

Clark County Park District, Recreation & Entertainment

The Clark County Park District operates Mill Creek Park, a 2,600-acre recreational site located just 7 miles northwest of Marshall, IL

Clark County Park District / Mill Creek Park: Features an 811-acre lake for boating and fishing, a 139-site campground, lakeside cabin rentals, boat launches, and fuel service

Address: 20482 N Park Entrance Rd, Marshall, IL 62441

Phone: (217) 889-3901

Outdoor Recreation: Offers 15 miles of ATV trails, mountain bike and hiking paths, an equestrian camp, an archery range, and youth sports fields.

Nearby Attractions: Complemented by Lincoln Trail State Park for camping/boating and Casey’s iconic “Big Things in a Small Town” world-record roadside stops.

The best things to do in Clark County focus on world-record landmarks, state parks, and historic town attractions

Casey’s World-Record Attractions: Tour downtown Casey to see giant attractions like the World’s Largest Rocking Chair, Wind Chime, and Mailbox.

Lincoln Trail State Park: Enjoy electric-motor boating, fishing, shaded camping, and hiking trails just south of Marshall.

Historic Marshall & Walldog Murals: Explore the courthouse square, view hand-painted historic murals, and see the World’s Largest Gavel.

Mill Creek Park: Rent lakeside cabins, go boating on the 811-acre lake, or ride 15 miles of designated ATV trails.

Clark County Offices & Services – Quick Refrence

Frequently Asked Questions (FAQs)