Manufacturing Economy
Indiana Nearly Matched Ohio’s Manufacturing Economy. Its Dependence Was Far Greater.
In 2025, Indiana’s manufacturing GDP was $131.08 billion versus Ohio’s $132.41 billion; 99.00% as large. Manufacturing represented 24.04% of Indiana’s economy versus 13.70% of Ohio’s. Indiana’s real manufacturing growth was 5.30%, highest among the 49 matched states.
Editorial evidence cutoff: September 9, 2026. Published September 29, 2026. Observation periods are stated throughout; older figures are retrospective evidence.
Indiana and Ohio were almost equal in manufacturing value added in 2025. Their reliance on manufacturing was not. In the BEA history available by September 9, 2026, Indiana’s manufacturing GDP was $131.08 billion, compared with Ohio’s $132.41 billion. Indiana reached 99.00% of Ohio’s manufacturing total.
Manufacturing represented 24.04% of Indiana’s economy and 13.70% of Ohio’s. The historical comparison shows why an industrial league table can conceal as much as it reveals. Similar factory economies can sit inside state economies of very different size and composition. For September planning, the distinction separates the scale of a manufacturing market from its importance to the surrounding economy.
A SMALL DOLLAR GAP SITS BESIDE A LARGE SHARE GAP
The manufacturing value-added gap was $1.32 billion in 2025. Relative to two totals above $130 billion, that was a narrow difference. Indiana had not passed Ohio in the saved series, so a claim of a new ranking reversal would be wrong. The supported description is near parity in manufacturing value added.
The manufacturing-share gap was approximately 10.35 percentage points. Indiana’s 24.04% share meant manufacturing accounted for nearly a quarter of state GDP. Ohio’s 13.70% share put a similarly sized manufacturing economy inside a substantially larger nonmanufacturing economy. The different denominators explain how two close manufacturing totals can imply such different degrees of specialization.
INDIANA ALSO GREW FASTER IN THE HISTORICAL YEAR
Indiana’s current-dollar manufacturing value added increased 4.11% between 2024 and 2025, from $125.91 billion to $131.08 billion. Ohio’s increased 0.62%, from $131.60 billion to $132.41 billion. Those nominal changes explain why the two totals came closer in this comparison.
The real manufacturing series supplies a separate check. Indiana’s inflation-adjusted value added rose 5.30%, while Ohio’s rose 1.72%. Indiana had the highest real growth rate among the 49 states with matched annual values in the saved archive. That ranking belongs to this one historical year and this coverage set. It is not evidence that Indiana always grows fastest, or that its September 2026 momentum remained unchanged.
MANUFACTURING SHARE MEASURES EXPOSURE, NOT A FINAL SCORE
A higher manufacturing share can be relevant to the way an industrial change spreads through a state economy. It indicates the direct weight of manufacturing value added. But the share alone cannot establish whether residents are better off, whether employers are more productive, or whether a state has superior infrastructure or economic policy.
The same numerical share can result from different combinations of manufacturing strength and the size of other industries. Expanding services could lower a state’s manufacturing share while manufacturing itself grows. A weak nonmanufacturing sector could raise the share without making factories more competitive. Calling the percentage a performance score would compress these distinct possibilities into one misleading ranking.
STATE GDP IS NOT A COMPANY SALES REGISTER
The underlying BEA state accounts measure value added, the contribution of production to GDP. They are not a direct total of every manufacturer’s sales, orders or shipment revenue. Intermediate inputs create an important distinction between sales and value added, especially when supply chains differ across industries.
Nor do these figures establish employment or supplier counts. A capital-intensive industry can generate substantial value added with a different staffing pattern from a labor-intensive one. The comparison is meaningful because the two states use the same manufacturing concept and year. Extending it to claims about jobs, household incomes or the ease of finding customers would require additional evidence.
THE INDUSTRY MIX NEEDS ITS OWN DATE
Detailed state manufacturing subsectors in the saved archive extend through 2024, while the broad state totals extend through 2025. That difference matters if the comparison is expanded to explain what Indiana and Ohio manufacture. A 2024 industry numerator cannot be divided by a 2025 manufacturing denominator and presented as an observed annual share.
The historical comparison here therefore keeps the broad 2025 totals separate from any detailed explanation. A plausible industry narrative is not enough to bridge the date gap. A causal account of Indiana’s faster growth would need matched industry changes, price treatment and evidence about the relevant mechanisms. The aggregate ranking identifies a pattern worth investigating; it does not identify its cause.
THE COMPARISON CHALLENGES TWO EASY BUSINESS ASSUMPTIONS
The first assumption is that the larger state necessarily offers a much larger manufacturing market. Ohio’s total state economy and Indiana’s manufacturing dependence differ, but their measured manufacturing value added was close. A supplier using overall state GDP as a rough proxy for its industrial opportunity could miss that distinction.
The second assumption is that equal manufacturing scale means equal exposure to an industrial downturn. The direct manufacturing shares show that the states’ economic compositions are different. They do not quantify the effects of a hypothetical downturn, including supplier links, household spending and government revenue. They do establish that applying an identical percentage to the two total state economies would ignore an important structural difference.
WHY THIS HISTORICAL RESULT MATTERS IN SEPTEMBER
A September 2026 market assessment can use the 2025 comparison to structure current questions. How closely does a seller’s customer mix resemble manufacturing as a whole? Which industries account for recent orders? How much of a location decision depends on the surrounding economy rather than the direct manufacturing base? These questions connect the historical pattern to a current decision without pretending the annual data describe this month’s conditions.
Indiana’s near match with Ohio is striking, but the share comparison carries the deeper lesson. Economic scale and economic dependence are different measurements. The same factory-dollar total can mean something very different in two places. Treating both measurements explicitly produces a more useful regional analysis than declaring a winner from either one alone.
Sources and evidence
Evidence period: 2025 levels; 2024 to 2025 growth. The frozen evidence record lists the source files and verified hashes available September 9, 2026. Source revision: 5e4fb7726c3d40060c0151c086c903baae856cab. Later live-data updates do not alter the historical evidence in this article.
Published 2026-09-29.