What Manufacturing Employs Here

Miami County Runs Well Above the National Line

Manufacturing's share of U.S. private employment has declined for decades, settling near 8 percent nationally by the early 2020s. Ohio, which retains a denser industrial base than most states, runs closer to 14 percent. Miami County runs higher still — manufacturing accounts for roughly a fifth of county employment, a figure that has held with unusual stability through the contraction cycles that hollowed out comparable Ohio counties in the same period.

That durability is not accidental. It follows from a specific composition of employers: a cluster of firms in welding technology and consumables, a set of Honda-adjacent supply-chain operations, a food-processing anchor at the Piqua ConAgra facility, and a handful of diversified manufacturers distributed across the smaller municipalities. The county did not specialize narrowly in a single commodity. It built up, over several decades, a layered industrial structure that could absorb sectoral shocks without collapsing.

Who Accounts for the Largest Shares

The Honda connection is the largest single organizing force. American Honda's Anna engine plant, located in Shelby County but drawing workforce from Miami County, has for decades anchored a supply chain that reaches directly into Troy and the surrounding townships. F&P America Manufacturing operates a stamping facility in Troy that supplies structural components into that chain; its employment is modest in absolute terms but its continuity matters. The Honda relationship also structured what is now coming next: the company's roughly $700 million retooling of Anna toward electric drive unit production, and the Honda–LG Energy Solution battery plant commitment at Jeffersonville in Fayette County, are investments that county planners and workforce developers are already factoring into training pipelines.

The welding sector is Miami County's most distinctive industrial signature. The Hobart Institute of Welding Technology, founded in Troy in 1930 and now one of the country's most respected welding training institutions, and ITW Hobart Brothers, which produces welding wire and filler metals from its Troy operations, together constitute a concentration that does not exist at this density anywhere else in Ohio. Illinois Tool Works acquired Hobart Brothers, and the wire-line production continues under ITW ownership — a Fortune 500 company maintaining a specialized manufacturing operation in a county of roughly 105,000 people. The American Welding Society has documented a persistent skilled-welder shortage nationally, which means the training infrastructure the county houses is not a legacy artifact but an active competitive advantage.

Two other employers provide significant employment mass. Clopay Corporation, which manufactures garage and overhead doors, operates in Troy. ConAgra Foods maintains a Piqua processing facility that represents the agricultural-to-industrial conversion that has been part of the Miami Valley economy since well before the automotive era. Neither is a growth story in the way Honda's EV transition is, but both have sustained employment through downturns that eliminated comparable operations elsewhere.

Why the Base Has Proved Durable

Ohio's manufacturing employment data, tracked by the Bureau of Labor Statistics, shows that the state's most resilient manufacturing counties share a common trait: no single employer represents more than a quarter of manufacturing payroll. Miami County fits that profile. The absence of a dominant monoculture meant that the automotive downturns of 2008–09, which devastated single-employer communities in western Ohio, registered in Miami County as stress rather than collapse.

The county's smaller municipalities contribute to that distribution. West Milton, Tipp City, and Piqua each host manufacturers whose output and employment are not captured in the county's headline figures but whose cumulative weight matters. F&P America, Clopay, and similar mid-tier operations are less visible than an assembly plant but often more stable: they are not subject to the same abrupt model-cycle decisions that can idle a final-assembly workforce overnight.

What Miami County holds, in sum, is breadth without thinness — enough industrial variety to weather sector-specific contractions, and enough concentration in high-skill trades to resist the commodity-labor competition that eroded lighter manufacturing elsewhere. Whether the EV transition sustains or disrupts that equilibrium is the open question.