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CountryMark

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A U.S. agricultural cooperative involved in Illinois Basin crude production, oil refining, fuel distribution, lubricants, and agricultural energy supply.

Last updated August 22, 2026

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Overview

CountryMark is an American agricultural cooperative whose business is centered on crude oil, refining, petroleum distribution, and products intended for farmers and agricultural machinery operators. Headquartered in Indianapolis, Indiana, the organization operates primarily in the United States and is closely associated with the Illinois Basin, a producing region covering parts of southeastern Illinois, southwestern Indiana, and western Kentucky. CountryMark's principal industrial asset is its refinery in Mount Vernon, Indiana. The refinery is designed to process approximately 34,000 barrels of crude oil per day, with its configuration suited to crude sourced from the Illinois Basin. The facility allows CountryMark to convert regional crude production into refined petroleum products rather than functioning only as a crude-gathering or wholesale enterprise. Its output includes diesel motor fuels, lubricants, and other petroleum products used by agricultural customers and commercial fuel users. The company's distribution infrastructure extends beyond the refinery. CountryMark owns a finished-products pipeline approximately 238 miles long, connecting the Mount Vernon refinery with Peru, Indiana. Terminals are located at the refinery, at Switz City and Jolietville along the pipeline, and at Peru at the pipeline's northern terminus. This network supports the movement and storage of refined products and links the refinery to markets and customers in Indiana and the surrounding Midwest. CountryMark has also operated a fleet of trucks that gathers crude from Illinois Basin producers. In 2008, it acquired Evansville-based Core Minerals, a transaction that expanded the organization into searching for and directly producing crude oil. The acquisition therefore extended CountryMark's activities upstream, complementing its established gathering, refining, and fuel-marketing operations. Historically, CountryMark has emphasized diesel fuels and lubricants tailored to agricultural equipment and farmer-drivers. Although Illinois Basin crude can be refined into a broad range of petroleum products, the cooperative's identity remains strongly connected to agricultural customers and regional producers. Its cooperative structure and regional ownership distinguish it from large multinational oil companies operating in Indiana. CountryMark has described itself as the only American-owned oil refinery in the state; the other Indiana refinery is substantially larger and is owned by BP, a British multinational. CountryMark has maintained only a small share of Indiana's overall consumer oil-products market, according to the referenced 2012 description. Its significance is therefore less about national scale than about vertical integration and regional service: the organization connects local crude producers with refining, transportation, storage, fuel sales, lubricants, and agricultural end users. Publicly available reference material does not establish a precise founding year, current executive roster, ownership details beyond its cooperative character, or a current corporate website.

History

CountryMark developed as an agricultural cooperative with a petroleum business focused on the needs of farmers and other users of agricultural equipment. Rather than operating solely as a fuel retailer or as a conventional oil producer, it built a vertically connected regional model around the Illinois Basin. The basin contains comparatively small oil fields distributed across southeastern Illinois, southwestern Indiana, and western Kentucky. CountryMark's activities have connected producers in that region to crude collection, refining, product transportation, storage, and end-market distribution. The organization's central processing asset is the Mount Vernon refinery in Indiana. With a stated capacity of about 34,000 barrels per day, the refinery is configured to process Illinois Basin crude and produces diesel, lubricants, and other petroleum products. This capability gives CountryMark a role in converting locally produced crude into fuels used in the surrounding agricultural economy. Its historical emphasis has been on diesel motor fuels and lubricants suitable for tractors, farm machinery, trucks, and farmer-drivers, although the refinery can produce a wider range of petroleum outputs. CountryMark's logistics system includes crude-gathering trucks and a finished-products pipeline extending about 238 miles from Mount Vernon to Peru, Indiana. The pipeline and associated terminals at Mount Vernon, Switz City, Jolietville, and Peru provide storage and transportation capacity across the company's distribution territory. This infrastructure supports a regional supply chain rather than a purely local retail operation. A significant expansion occurred in 2008, when CountryMark acquired Core Minerals, an Evansville company. The acquisition brought CountryMark into the business of searching for and directly producing crude oil. It consequently broadened the cooperative's role upstream while reinforcing its existing connections to Illinois Basin producers and refining operations. By 2012, CountryMark was described as holding only a small portion of Indiana's overall consumer market for oil products. Its competitive identity was consequently based less on scale than on regional integration, cooperative relationships, and specialization in agricultural fuel needs. The organization also presented itself as the only American-owned oil refinery in Indiana. The state's other refinery, owned by BP, had a much larger processing capacity. The available reference material does not provide a definitive founding date, a complete chronology of ownership or governance, detailed financial results, or a current list of executives. It does establish CountryMark as an operating U.S. petroleum and agricultural-supply cooperative with refining, crude-gathering, production, pipeline, terminal, and fuel-marketing activities.

  • 2012

    Documented regional consumer-market position

    [1]

    Reference material described CountryMark as holding a small share of Indiana's overall consumer oil-products market while continuing to focus on agricultural fuels and lubricants.

  • 2008

    Core Minerals acquisition

    [1]

    CountryMark acquired Evansville-based Core Minerals and expanded into crude-oil exploration and direct production.

Products and positioning

A regionally integrated, farmer-oriented petroleum cooperative linking Illinois Basin crude production with refining, fuel distribution, lubricants, and agricultural customers. CountryMark emphasizes American ownership, local supply relationships, and products designed for agricultural machinery and farmer-drivers.

  • Refined fuels

    Diesel motor fuels

    Diesel is one of CountryMark's historically emphasized product categories. The company has oriented its diesel business toward agricultural machinery, farm trucks, and farmer-drivers, using its Mount Vernon refinery and regional distribution network to supply fuel to customers in the Midwest.

  • Petroleum products

    Lubricants

    CountryMark has specialized in lubricants intended for agricultural machinery and related vehicle users. These products complement its diesel business and reflect the cooperative's focus on the operating requirements of farms and other customers dependent on heavy equipment.

  • Oil refining

    Refined petroleum products

    The Mount Vernon refinery processes Illinois Basin crude into diesel and other petroleum products. Although the company's market identity is particularly associated with agricultural fuels, the refinery's output is described as capable of serving a wider range of petroleum-product applications.

  • Crude oil production and gathering · 2008

    Illinois Basin crude oil

    CountryMark gathers crude from Illinois Basin producers using its truck fleet and, following the 2008 Core Minerals acquisition, also participates in searching for and directly producing crude oil. This upstream activity supplies and complements the cooperative's refining operations.

Brand decisions

  • 2008

    Acquisition of Core MineralsM&A

    Background

    CountryMark already gathered Illinois Basin crude and operated refining and petroleum distribution assets. Acquiring Core Minerals provided a route into direct crude-oil exploration and production.

    Action taken

    CountryMark purchased the Evansville-based Core Minerals business.

    Aftermath

    The transaction expanded CountryMark's vertical scope upstream, adding direct crude production to its existing gathering, refining, and marketing activities.

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