Blog · October 14, 2026 · Illinois
Clark County Township Map, Illinois
How to tell which township a parcel in Clark County sits in, and what that means near Casey.
Main page: Clark County, IL GIS & Parcel Viewer (official map link, Clark County facts and neighboring maps).
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Townships organize a lot of rural life near Martinsville, from road upkeep to how land is described, and a Clark County township map lists their lines. Below we sort out the kinds of townships in Clark County and where to see each one.
Civil townships vs. survey townships
The named townships on a county map are civil townships, and a parcel near Marshall belongs to exactly one of them. The survey township cited in deeds near Marshall follows the federal survey grid, in which each township is about 36 square miles, split into 36 sections of about 640 acres.
Finding the tract on the Clark County map
Clark County publishes its parcels on the Clark County Beacon site, which runs on Schneider Geospatial's Beacon platform, free to use for a lot in Casey or a tract near Westfield. In the county version, the search page takes an owner, an address or a parcel ID, and each report links back to the map view for the tract near Casey. Bookmark our Clark County page too; it tracks the official Illinois link if it moves and lists the maps around Casey.
Using the Clark County parcel viewer as a Clark County township map
The Clark County Beacon site is the quickest Clark County township map for most people: switch on boundaries and click a parcel near Adenmoor. Some Clark County viewers include a PLSS layer that labels sections, which is useful when a deed near Martinsville cites T and R numbers.
Clark County at a glance
Marshall is the county seat, and Casey, Martinsville, and Westfield are among the other towns on the county map. Unincorporated communities in the county, including West Union, Adenmoor, and Castle Fin, display up as small groups of parcels along the roads. Census Bureau estimates put Clark County at about 15,088 residents in 2023 on approximately 501 square miles of land. Outside Westfield, most of the county map is farm, ranch or timber ground with large, irregular tracts. With a founding date of 1819, Clark County has long chains of title on some rural tracts.
Why the township matters
Township lines near Martinsville decide which local office you deal with, and the county record is the better guide than an address. The township on the county record also decides which local office keeps meeting notices and ordinances for land near Adenmoor.
Sections, quarters and roads in Clark County
Near Westfield, section 1 sits in the northeast corner of a licensed survey township, with the count snaking back and forth to 36 in the southeast. Aliquot descriptions for land near Adenmoor are read from the end: find the last quarter named first, then work inward. Water, old surveys and corrections can leave odd-sized lots along section edges in Clark County.
Old names and overlapping districts in Clark County
If a county deed near Adenmoor cites a township that no longer appears on the map, the county recorder can typically explain the change. Road maintenance questions near Adenmoor depend on if a road is a state, county or local road, so ask the county highway office if you're unsure.
What drives land use around Marshall
Clark County's 2022 business count was 324 establishments, with other services, accommodation and food services, and retail trade the largest groups. Compared with national shares, Clark County leans toward oil and gas extraction and mining (except oil and gas), which shapes demand for land near Westfield.
Neighboring maps around Clark County
Clark County borders Coles County, Crawford County, Cumberland County, Edgar County, and Jasper County, and each keeps its own parcel map and records. Our Illinois page links each map neighboring Clark County.
Quick answers for Clark County
Does a Clark County mailing town match the township?
Postal service areas around Martinsville cross township lines, so the two frequently differ.
Which township is my house near Martinsville in?
Click the parcel on the Clark County Beacon site; the Clark County record typically names the township.
How many acres is a section in Clark County?
Roughly 640 acres per section in Clark County; real sections vary a bit as of survey corrections.
What do township and range mean on a deed near Martinsville?
It's a Public Land Survey System block about 6 miles square with 36 sections, used to describe Clark County land.
Open the official Clark County, IL parcel map Clark County in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.