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Slaughterhouses and Packing Plants

The Union Stock Yards: How Chicago Became the World's Meat Capital

For more than a century, cattle from the whole country rode the rails to a 320-acre South Side complex that set the pace for American beef.

What were the Union Stock Yards?

The Union Stock Yards were a vast livestock market and slaughtering district on Chicago's South Side. According to the Encyclopedia of Chicago entry, the 320-acre facility opened on Christmas Day, 1865, and was organized during the Civil War by Chicago meatpackers and railroad executives, among them Rosell Hough and John Hancock.

Gathering buyers, sellers, rail lines and packers in one district gave cattle raisers a single place to sell. John B. Sherman, a veteran of the livestock business, managed the company for many years.

How big did the stockyards get?

By the early 1890s the yards could hold more than 400,000 live animals at one time, and the company itself employed about 1,000 people, a number that rose to about 2,000 by the early 1920s. Those figures count only the yards' own workforce. The packers that rented space inside the complex employed far more.

The same source reports that roughly 400 million animals were slaughtered at the yards between 1865 and 1900. Cattle, hogs and sheep all moved through the pens, but beef was the trade that defined the place. For that period the Chicago market was where the national livestock trade came together.

Swift, Armour and the packing houses

Major Chicago meatpackers, including Swift and Armour, operated plants inside the yards. Because the animals were penned, sold and killed in the same district, the packers worked next to their supply of livestock.

The concentration of the trade drew legal attention. The Living History Farm account notes that antitrust rulings in 1920 forced the old Big Four packers, Armour, Swift, Cudahy and Wilson, to give up their stockyards, transportation systems and retail operations. That account, Living History Farm on IBP and boxed beef, also describes the packers' later move away from Chicago.

What Made It Work

The yards worked because they solved a coordination problem. Railroads, packers, commission firms and cattle raisers all needed a central, trusted place to trade, and the Union Stock Yards supplied it at scale for about a century.

That success also depended on the technology of its time. Chicago's central position mattered most in the rail era, and when trucks and highways changed the map after World War II, the advantage disappeared.

  • Centralization: one 320-acre site brought cattle, buyers and packers together, cutting the cost of finding a market.
  • Rail connections: railroad executives were among the people who organized the company.
  • Stable management: the company was run for many years by livestock veteran John B. Sherman.
  • Packer clustering: Swift, Armour and others built plants inside the yards, keeping slaughter and shipping close to the pens.
  • Scale: the yards could hold more than 400,000 animals at once by the early 1890s.
  • Limit to note: the trade was concentrated in a few large packers, and antitrust rulings in 1920 forced the Big Four to give up their stockyards.

Why did the Union Stock Yards close?

After World War II, the expanding highway system and the trucking industry made it cheaper to slaughter animals near where they were raised, in states such as Nebraska, Kansas, Iowa, Colorado and Montana, than to ship them to Chicago. The major packers resisted the shift for a time, but Swift and Armour eventually left the yards in the late 1950s.

With its main tenants gone, the historic yards shrank into a minor part of the meat industry. The Union Stock Yard stopped operating completely in 1971. A 1934 fire had already leveled much of the complex, according to the Union Stock Yard Gate summary, though the yards continued to operate until 1971.

The Union Stock Yard Gate

The one major structure still standing is the gate on the yards' eastern edge. It was designed around 1875 and built in 1879 by the architects Burnham & Root, Daniel Burnham and John W. Root. Its gatehouse has been demolished, but the gate survived the 1934 fire.

Preservation came quickly after closure. The gate was named a Chicago Landmark on February 24, 1972, listed on the National Register of Historic Places on December 27, 1972, and designated a National Historic Landmark on May 29, 1981.

What the yards changed in beef

The yards' decline pointed toward the modern industry. The new packers moved plants next to feedlots, killed cattle where they were fed, and shipped cuts rather than carcasses. Cudahy was the first of the old packers to move away from Chicago, buying cattle directly rather than through the yards.

That shift ended Chicago's role but also spread cattle feeding and processing across the Plains. For readers who want the ranch side of the story, farm.FM covers cattle ranching and the ranch economy, and there is a farm.FM story about the stockyards era for more background.

Timeline

  1. 1865The 320-acre Union Stock Yards open on Christmas Day
  2. 1875Gate designed, according to one source
  3. 1879The Union Stock Yard Gate is built by Burnham & Root
  4. 1890sYards can hold more than 400,000 live animals at once
  5. 1920Antitrust rulings force the Big Four packers to give up their stockyards
  6. 1934A fire levels much of the yards; the gate survives
  7. 1950sSwift and Armour leave the yards by the late 1950s
  8. 1971The Union Stock Yard stops operating
  9. 1972Gate becomes a Chicago Landmark and is listed on the National Register
  10. 1981Gate designated a National Historic Landmark

Frequently asked questions

When did the Union Stock Yards open and close?

The Union Stock Yards opened on Christmas Day, 1865, and stopped operating completely in 1971. Swift and Armour had already left in the late 1950s, which left the yards a minor part of the meat industry.

How big were the Union Stock Yards?

The facility covered 320 acres at opening. By the early 1890s it could hold more than 400,000 live animals at one time, according to the Encyclopedia of Chicago.

Why did the Chicago stockyards close?

Highways and trucking made it cheaper to slaughter animals near where they were raised, in states like Nebraska, Kansas and Iowa. Once Swift and Armour left, the yards lost their main tenants.

What remains of the Union Stock Yards today?

The Union Stock Yard Gate, built in 1879 by Burnham & Root, is the main surviving structure. It is a Chicago Landmark and a National Historic Landmark.

Sources and further reading

Profiles are compiled from public sources and reviewed against them. See our editorial policy to suggest a correction.

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