Short Answer
The United States does not have one economy; it has 50 distinct state economies, each shaped by a different mix of industries. National figures show finance, insurance, and real estate as the largest sector, but state-level data from the Bureau of Economic Analysis reveal striking specialization: manufacturing dominates Indiana, information drives Washington, and mining anchors North Dakota. Understanding these sectoral shares is essential for grasping why states grow at different rates, respond differently to policy changes, and face unique economic risks.
Key Numbers
- Largest U.S. sector: Finance, insurance, and real estate at $4.79 trillion, or 20.5% of real GDP.
- Second-largest sector: Professional and business services at $3.47 trillion.
- Manufacturing share: 10.1% nationally, but 26.4% in Indiana and roughly 5% in New York.
- Information share: 7.3% nationally, 21.9% in Washington and 14.4% in California.
- Mining share: 0.8% nationally, 17.2% in North Dakota.
- Manufacturing share change since 2014: Down 1.57 percentage points.
- Professional and business services change: Up 0.85 percentage points since 2014.
- Q4 2024 real GDP growth: Fastest in Arkansas at 5.1%; slowest in Vermont at 0.6%; unchanged in Idaho and South Dakota.
Explanation
Gross domestic product by industry measures the value added by each sector within a state or the nation. The Bureau of Economic Analysis publishes these estimates using the North American Industry Classification System, grouping businesses into sectors such as manufacturing, information, mining, trade, and finance. In 2024, the largest U.S. sector was finance, insurance, and real estate, contributing $4.79 trillion, or 20.5% of real GDP. Professional and business services followed at $3.47 trillion, with trade, government, and manufacturing each above $2.3 trillion.
These national averages, however, hide enormous variation. Manufacturing accounts for 10.1% of U.S. GDP on average, but in Indiana it is 26.4%, while in New York it is roughly 5%. The information sector is 7.3% nationally but 21.9% in Washington and 14.4% in California. Mining is just 0.8% nationally but 17.2% in North Dakota. A state’s sectoral mix reflects its natural resources, historical development, workforce skills, and infrastructure.
BEA data also show how sectoral contributions have shifted over time. Between 2014 and 2023, manufacturing’s share of private industry GDP fell by 1.57 percentage points, and mining, quarrying, and oil and gas extraction fell by 1.05 points. Meanwhile, professional and business services rose by 0.85 points and construction by 0.72 points. These changes help explain why some states have gained or lost economic momentum.
Definition
GDP by industry is the value added by each industry in a state or country. Value added equals an industry’s total output minus the intermediate inputs it consumes, such as raw materials and purchased services. It represents the industry’s direct contribution to economic production. BEA publishes state GDP by industry in both current dollars and real chained 2017 dollars, using NAICS sectors. The data cover private industries and government, allowing comparisons of sector size and share across states.
National Comparison
The national industry map shows a diverse economy led by services and finance. The table below lists major U.S. sectors by real GDP in 2024, based on BEA data.
| Sector | Real GDP (billions of chained 2017 dollars) | Share of U.S. GDP |
|---|---|---|
| Finance, insurance, and real estate | $4,790 | 20.5% |
| Professional and business services | $3,470 | — |
| Trade | $2,610 | — |
| Government | $2,590 | — |
| Manufacturing | $2,360 | 10.1% |
| Information | — | 7.3% |
| Mining | — | 0.8% |
Shares for professional and business services, trade, and government are not specified in the source, but their dollar values show they are among the largest sectors. The national economy is service-heavy, yet manufacturing and mining remain critical in specific states.
State Comparison
State-level data reveal that most states share similar primary sectors but have vastly different second-largest sectors. For example, Texas runs on energy and trade, New York on finance, California on information, and Indiana on manufacturing. The table below highlights selected states with unusually high sector shares.
| State | Dominant or notable sector | Share of state GDP |
|---|---|---|
| Indiana | Manufacturing | 26.4% |
| Washington | Information | 21.9% |
| North Dakota | Mining | 17.2% |
| California | Information | 14.4% |
| New York | Manufacturing | ~5% |
These differences mean a national policy affecting manufacturing will hit Indiana far harder than New York, while a technology downturn will be felt most acutely in Washington and California.
Ranking Table
Ranking states by sector share shows the extremes of specialization. The following table ranks selected states for three key sectors, using the highest available shares from BEA data.
| Sector | Top state | Share | National average |
|---|---|---|---|
| Manufacturing | Indiana | 26.4% | 10.1% |
| Information | Washington | 21.9% | 7.3% |
| Mining | North Dakota | 17.2% | 0.8% |
While these are not full 50-state rankings, they illustrate how far individual states can diverge from the national average. In each case, the top state’s share is more than double the national figure, and for mining it is more than 20 times higher.
Historical Trend
Between 2014 and 2023, the sectoral composition of U.S. private industry GDP shifted modestly but meaningfully. According to SSTI analysis of BEA data, manufacturing’s share fell by 1.57 percentage points, and mining, quarrying, and oil and gas extraction fell by 1.05 points. Professional and business services rose by 0.85 points, and construction rose by 0.72 points. These changes reflect long-term trends such as automation, global competition, the growth of business services, and a post-pandemic construction recovery.
- Manufacturing: -1.57 percentage points since 2014
- Mining, quarrying, and oil and gas extraction: -1.05 percentage points
- Professional and business services: +0.85 percentage points
- Construction: +0.72 percentage points
Why It Matters
A state’s industry mix shapes its economic fortunes. States with heavy manufacturing or mining exposure may see faster growth during commodity booms but face sharper downturns when prices fall or trade policies shift. States with large finance or information sectors often have higher wages but also greater sensitivity to financial markets and technology cycles. Understanding sectoral GDP helps policymakers, businesses, and workers anticipate risks and opportunities.
Significant changes in federal policy may affect GDP composition going forward, according to SSTI, making state-level industry data even more important for planning.
Factors Behind the Trend
Several forces drive differences in state industry shares. Natural resources explain mining concentration in North Dakota and energy strength in Texas. Historical industrial development and supply chains support manufacturing in Indiana and other Midwest states. The presence of major technology firms boosts information share in Washington and California. Financial centers such as New York benefit from agglomeration effects. Meanwhile, national trends like automation, offshoring, and the rise of professional services have gradually reduced manufacturing’s share while increasing business services.
Limitations of the Data
State GDP by industry estimates have limitations. They are subject to revision as more complete data become available. Industry classifications under NAICS may not capture all economic activity, especially in rapidly changing sectors. Current-dollar figures include inflation, while real chained-dollar figures adjust for price changes but involve complex calculations. Small states with high sector shares can experience large percentage swings from relatively small dollar changes. Finally, state GDP does not account for cross-border commuters or multi-state firms perfectly.
How GDP Is Calculated
BEA calculates GDP by industry as value added. For each industry, value added equals gross output minus intermediate inputs. It can also be measured as the sum of compensation of employees, taxes on production and imports less subsidies, and gross operating surplus. BEA uses data from surveys, tax records, and economic censuses to estimate output and inputs by state and industry. The result is a comprehensive measure of each sector’s contribution to state and national GDP.
Nominal vs Real GDP
Nominal, or current-dollar, GDP measures output using prices in the year produced. Real GDP adjusts for inflation by using chained 2017 dollars, allowing comparisons over time without price distortions. For example, the national finance, insurance, and real estate sector was $4.79 trillion in real chained 2017 dollars in 2024. When comparing sector shares across years, real GDP is preferred because it isolates changes in the volume of goods and services from changes in prices.
Source & Data Date
Primary source: U.S. Bureau of Economic Analysis, Gross Domestic Product by State and Personal Income by State, 4th Quarter 2024 and Preliminary 2024, released March 28, 2025; and BEA State GDP by Industry data (SAGDP2, SAGDP9) for 2024. Additional analysis from SSTI, Characterizing state economies: sectoral shares of GDP, March 13, 2025; and Finexus Research, State GDP by Industry, March 29, 2026. Data cover 2024 real GDP by industry and 2014–2023 sectoral share changes.
FAQ
Which industry contributes the most to U.S. GDP?
Finance, insurance, and real estate is the largest sector, accounting for $4.79 trillion, or 20.5% of U.S. real GDP in 2024, according to BEA data.
Which state has the highest manufacturing share of GDP?
Indiana has the highest manufacturing share among states, at 26.4% of its GDP, compared with the national average of 10.1%.
Why do state economies differ so much by industry?
State economies differ because of natural resources, historical development, workforce skills, infrastructure, and regional specialization. For example, Washington's information share is high due to technology firms, while North Dakota's mining share reflects oil and gas extraction.
How does BEA calculate GDP by industry for states?
BEA calculates GDP by industry as value added: the value of an industry's output minus its intermediate inputs. It uses NAICS classifications and publishes both current-dollar and real chained-dollar estimates.
What is the difference between nominal and real GDP?
Nominal GDP is measured in current dollars and includes inflation, while real GDP is adjusted for inflation using chained dollars, allowing meaningful comparisons over time.
Leave a Reply