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Ironwood Royalty

The Mississippian formation

Footprint and mineral-owner context for the Mississippian, drawn from the same state oil and gas commission well records behind our county pages. Every figure on this page is an estimate subject to verification of your specific interest.

Last updated June 2026.

What is the Mississippian?

The Mississippian is a producing formation named across 38 counties in Kansas, in the Cherokee Basin, Sedgwick Basin and Central Kansas Uplift, with 90,252 active wells on record across those counties.

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The Mississippian shows up in state oil and gas commission well records as a producing formation or pool in 38 of the counties and parishes we cover, across the Cherokee Basin, Sedgwick Basin and Central Kansas Uplift. It is not confined to one basin; owners in different basins hold Mississippian interests that are valued the same way, on the income the wells actually pay. Across those counties, state records show 90,252 active wells producing, with the heaviest activity in Woodson County, Allen County, Miami County. This page is built from the same public well-record data as our county pages, not a USGS geologic assessment, so it does not carry a play-wide resource estimate the way our larger flagship formation pages do.

Counties in the Mississippian play

These are the counties and parishes we cover where state commission records show the Mississippian producing, with active well counts from that same record.

Allen County, Kansas 6,525 wells
Anderson County, Kansas 4,324 wells
Barber County, Kansas 2,293 wells
Barton County, Kansas 2,945 wells
Butler County, Kansas 3,672 wells
Chautauqua County, Kansas 3,915 wells
Cheyenne County, Kansas 764 wells
Coffey County, Kansas 2,096 wells
Comanche County, Kansas 661 wells
Cowley County, Kansas 2,602 wells
Elk County, Kansas 1,115 wells
Ellis County, Kansas 3,533 wells
Ellsworth County, Kansas 518 wells
Franklin County, Kansas 4,616 wells
Gove County, Kansas 653 wells
Graham County, Kansas 1,604 wells
Greenwood County, Kansas 3,900 wells
Harper County, Kansas 850 wells
Kingman County, Kansas 1,243 wells
Kiowa County, Kansas 523 wells
Lane County, Kansas 633 wells
Linn County, Kansas 3,152 wells
Logan County, Kansas 513 wells
Marion County, Kansas 803 wells
McPherson County, Kansas 1,084 wells
Miami County, Kansas 6,318 wells
Neosho County, Kansas 2,710 wells
Ness County, Kansas 1,624 wells
Pratt County, Kansas 1,084 wells
Reno County, Kansas 726 wells
Rice County, Kansas 1,617 wells
Rooks County, Kansas 2,323 wells
Russell County, Kansas 3,041 wells
Stafford County, Kansas 2,115 wells
Sumner County, Kansas 1,286 wells
Trego County, Kansas 917 wells
Wilson County, Kansas 3,443 wells
Woodson County, Kansas 8,511 wells

What the Mississippian means for your minerals

A resource estimate for a play is not the value of your acreage. Your mineral and royalty interest is valued on the income your wells actually pay, roughly 36 to 72 times your average monthly royalty check, the same as 3 to 6 times your annual royalty. Where you land in that band depends on your wells decline, the operator, your royalty rate, and any undeveloped drilling upside. For the full method and to request your free estimate, see what are my mineral rights worth.

The Mississippian is not confined to one basin: state records show it producing across Cherokee Basin , Sedgwick Basin , and Central Kansas Uplift . For the basin-wide value bands and the counties we buy in, see each basin's page.

Mississippian questions

Which counties does the Mississippian produce in?
State commission well records show the Mississippian producing in 38 counties we cover: Allen County, Anderson County, Barber County, Barton County, Butler County, Chautauqua County, Cheyenne County, Coffey County, Comanche County, Cowley County, Elk County, Ellis County, and others. See each county's page for the full local well and operator picture.
How many wells produce from the Mississippian?
Across the counties we cover, state oil and gas commission records show about 90,252 active wells tied to the Mississippian. That figure is a sum across counties from public well records, not a measure of any one owner's interest.
What is a Mississippian mineral interest worth?
A Mississippian interest is valued the same way as any producing interest: roughly 36 to 72 times your average monthly royalty check. Where you land in that range depends on your wells' decline, the operator, your royalty rate, and any undeveloped drilling upside. This is an estimate, not an offer.

Sources

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