Conex box, shipping container, storage container: the words get used interchangeably, but each has a backstory. Here is the field guide for Missouri buyers, with specific notes for St. Louis, St. Charles County and the river counties and the surrounding communities, including Clayton, Kirkwood, Webster Groves, University City, Maplewood.
The word conex (sometimes spelled CONEX) is short for "container express," a term coined by the United States military in the 1950s for a standardized steel shipping container used to move equipment and supplies during the Korean War. The original CONEX boxes were 8.5 feet by 6 feet by 6.8 feet, much smaller than today's intermodal units, but the principle was identical: a stackable, lockable, weatherproof steel box that could move by truck, rail, or ship without unpacking.
By the late 1960s the commercial shipping industry had standardized on 20-foot and 40-foot intermodal containers, the units you see on every cargo ship and rail line today. The military term stuck in everyday speech. In Missouri, contractors, farmers, and homeowners still call any large steel storage box a conex, even when the unit is technically an ISO shipping container or a purpose-built storage container.
For practical buying purposes the three terms describe the same thing across Missouri: a corrugated steel container, 20 or 40 feet long, with cargo doors on one end, designed to keep wind and water out for decades.
The vocabulary lines up like this:
If you are shopping for storage, the difference rarely matters. The same physical unit can be sold as any of the three. What matters more is the size, the condition grade, and the delivery logistics.
Missouri customers typically choose from three sizes:
Specialty sizes (10-foot, 45-foot, refrigerated, double-door, side-opening) exist but are less common. We can source them on request.
Demand in Missouri is anchored by Beef cattle, hay and row crop farming, which is the broadest source of container demand in the state. Missouri runs among the top three states in the country for beef cows and has more individual farms than every state but one, and the operations are mostly family sized rather than corporate. North Missouri and the Ozark border counties are cow-calf country, mid-Missouri and the river bottoms are corn and soybeans, and every one of those operations needs storage that locks, stays dry and can sit on a field edge without a foundation., Bootheel row crop agriculture, which is a different business from the rest of Missouri farming. The seven county Bootheel grows cotton and rice further north than most people expect either crop to grow, alongside soybeans, corn, wheat, watermelon and peaches, all on ground drained by the Little River Drainage District, the largest drainage district in the country. Gins, elevators, equipment dealers and irrigation contractors in Sikeston, Kennett, Portageville and Malden buy and rent steadily, and demand spikes hard from late September into November., Vehicle assembly and the supplier base. Missouri builds full size vans and midsize trucks at the Wentzville plant in St. Charles County and pickups and commercial vans at the Claycomo plant in Clay County, and both draw supplier yards, sequencing centers and logistics operations around them. Those yards order 40ft high cubes for racked parts storage more often than any other customer type in the state., Aerospace and defense manufacturing in north St. Louis County, which builds military aircraft and has for generations, plus the machining, composites and tooling shops across St. Louis and St. Charles counties that feed it. Secure, weatherproof on-site storage is a standing requirement on that kind of campus and on every construction project that touches it., Animal health, which is a genuinely named cluster here. The Kansas City Animal Health Corridor running from northeast Kansas across the metro to Columbia concentrates an outsized share of the world's animal health industry, with major vaccine and pharmaceutical manufacturing in St. Joseph and research operations around Columbia and the Kansas City suburbs. It is a construction-heavy sector and construction is the most container-hungry phase of any plant expansion., Freight, rail and barge logistics, which is the reason the state exists in the shape it does. Kansas City is one of the largest rail hubs in the country by tonnage, with intermodal yards, cross-dock operations and the underground warehouse complex carved into the limestone bluffs northeast of downtown. St. Louis sits at the northernmost lock-free stretch of the Mississippi, which is why the barge terminals there handle so much grain and fertilizer. Both metros run warehouse and distribution corridors that use containers as overflow and staging., Lead, limestone and industrial minerals. The Viburnum Trend in southeast Missouri has been the largest primary lead producing district in the United States for decades, and limestone and aggregate quarries operate in nearly every county. Mine sites, quarries and the contractors who serve them use containers for tools, parts and blasting supplies because a lockable steel box on a rough site outlasts anything built on the spot., Poultry and food processing across southwest Missouri, concentrated in McDonald, Barry, Lawrence and Newton counties, along with turkey and pork operations in mid-Missouri and a heavy meat and grain processing presence in St. Joseph and the Sedalia and Marshall corridor. Grow-out farms, feed operations and processing plants all keep containers for feed, equipment and seasonal storage., Brewing, distilling, winemaking and food manufacturing, anchored by the brewery complex in south St. Louis and spread across the state through craft producers in Kansas City, Springfield and Columbia. The Missouri Rhineland along the Missouri River between Augusta, Washington and Hermann is genuine wine country, and Augusta holds the distinction of being the first federally recognized American Viticultural Area in the country. Vineyards and wineries buy containers for barrel, equipment and harvest storage., Tourism and outdoor recreation, which drives real container demand in the southern half of the state. Branson's theaters and Silver Dollar City, the Lake of the Ozarks with more shoreline than most people believe, Table Rock and Bull Shoals, the Current and Jacks Fork rivers in the Ozark National Scenic Riverways, and the Katy Trail running two hundred and forty miles across the middle of the state all support marinas, outfitters, campgrounds and resorts that store seasonal gear for half the year., Higher education, healthcare and the military installations, which together are the largest employers in a dozen Missouri counties. The university campuses at Columbia, Rolla, Springfield, Warrensburg, Maryville, Kirksville and Cape Girardeau, the hospital systems in both metros and in Springfield and Joplin, Fort Leonard Wood in Pulaski County and Whiteman Air Force Base at Knob Noster all run continuous construction and event operations, and both of those generate container rentals rather than purchases more often than any other sector., alongside residential construction and the storage cycle that severe convective storms, meaning straight line wind, large hail and tornadoes drives.
The uses we see most often:
Three questions narrow the decision quickly:
Conex boxes are delivered on a tilt-bed (sometimes called a roll-off) truck. The driver tilts the bed up, and the container slides off onto your placement site. Most deliveries follow the same physical sequence:
Delivery timing is honest, not aspirational. Across Missouri:
Permit rules depend on the municipality. Rural counties often have no requirement at all for a temporary storage container. Urban codes are stricter, and some HOAs prohibit container placement entirely. Before ordering, check with your local building or planning department, and verify HOA rules if they apply. Our local guide walks through the most common scenarios: container permits in Missouri.
Pricing is ZIP-specific, because distance from the serving depot drives a meaningful part of the total. Missouri delivered pricing: starting at $2,332 for a 20ft Wind and Water Tight container delivered in St. Louis. Price always includes delivery. That figure is an anchor for the best-served part of the state, not a quote for every address, and it was captured live on 2026-08-06.
We do not publish statewide price tables on this page, because they are inaccurate the moment they are written. Tell us your ZIP and what you need, and we will send back an all-in number with delivery included. No haul fee surprises, no padded line items. If you would rather spread the cost, ask about rent-to-own when you call.
Tell us your Missouri ZIP and what you need. We will send back an all-in price including delivery to your address.