NAICS Sector 21 · IRS SOI + Census CBP 2023

Mining, Quarrying, and Oil and Gas Extraction

Sector-wide financial benchmarks across 48 sub-industries, profit margin, payroll, employment, and revenue. Drill into any industry below for NAICS-level detail.

2.0%
Avg net margin
553K
Workers
48
Industries
$411.5B
Annual receipts

The verdict · Mining, Quarrying, and Oil and Gas Extraction

The Mining, Quarrying, and Oil and Gas Extraction sector averages a 2.0% net margin across 48 sub-industries - significantly below average - but that headline blends Support Activities for Mining at 7.2% with far thinner lines below it.

2.0%
Avg net margin (IRS SOI)
553K
Workers (Census CBP)
23K
Establishments
48
Sub-industries

Sector averages are a map, not a benchmark, drop one NAICS level deeper to compare your own business.

What the Mining, Quarrying, and Oil and Gas Extraction Sector Numbers Reveal

The Mining, Quarrying, and Oil and Gas Extraction sector (NAICS 21) aggregates 48 distinct sub-industries into one benchmarking unit. At the sector level, the average net profit margin is 2.0% - a figure that is significantly below average. Averages at this tier can mislead because they blend high-margin specialty lines with commodity operators: Support Activities for Mining runs at 7.2%, while other sub-industries inside the same sector operate well below that headline. When you benchmark a business against a sector, always drop one level deeper to the NAICS 6-digit industry that matches your actual operations.

Scale metrics reinforce the story. Census Bureau CBP 2023 records 553,036 employees across 23,360 establishments in this sector, with $411.5B of annual receipts flowing through the IRS SOI filings. The largest employer sub-industry is Support Activities for Mining with 288,339 workers, followed by Mining (except Oil and Gas) at 173,729. Understanding which sub-industries drive headcount helps identify where labor cost trends, wage pressure, and hiring competition will concentrate, all of which feed directly into the profit margin shown above.

For operators, investors, and analysts, the right move is to use this sector page as a map rather than a conclusion. Click into any sub-industry below to see its actual NAICS-6 profit margin, entity-type breakdown (sole prop vs. S-corp vs. C-corp), state-level employment concentration, and SBA lending activity. Sector-level numbers are the aggregate; the real benchmarking precision lives one layer down in the IRS SOI and Census CBP micro-data that PlainBizBench surfaces on each industry page.

Avg Profit Margin

2.0%

Total Employment

553,036

Establishments

23,360

Total Receipts

$411.5B

All Industries in This Sector

Industry Profit Margin
Mining (except Oil and Gas)

NAICS 212

N/A
Oil and Gas Extraction

NAICS 211

2.7%
Support Activities for Mining

NAICS 213

7.2%

Frequently Asked Questions

What is the average profit margin for the Mining, Quarrying, and Oil and Gas Extraction sector?
The Mining, Quarrying, and Oil and Gas Extraction sector (NAICS 21) has an average net profit margin of 2.0% across 48 sub-industries, which is significantly below average. This is derived from IRS Statistics of Income business tax data.
How many industries are in the Mining, Quarrying, and Oil and Gas Extraction sector?
The Mining, Quarrying, and Oil and Gas Extraction sector (NAICS 21) contains 48 distinct sub-industries classified under the North American Industry Classification System. These range from high-margin industries like Support Activities for Mining (7.2%) to major employers like Support Activities for Mining (288,339 employees).
How many people work in the Mining, Quarrying, and Oil and Gas Extraction sector?
The Mining, Quarrying, and Oil and Gas Extraction sector employs 553,036 workers across 23,360 business establishments nationwide, according to Census Bureau County Business Patterns 2023 data.
What are the most profitable industries in Mining, Quarrying, and Oil and Gas Extraction?
The highest-margin industries in the Mining, Quarrying, and Oil and Gas Extraction sector include Support Activities for Mining (7.2%), Oil and Gas Extraction (2.7%). These margins are calculated from IRS Statistics of Income data as net income divided by total receipts.
What is the total revenue of the Mining, Quarrying, and Oil and Gas Extraction sector?
The Mining, Quarrying, and Oil and Gas Extraction sector reports total annual receipts of $411.5B across all business entities filing federal tax returns. This covers all 48 sub-industries within NAICS sector 21, based on IRS Statistics of Income data.
Disclaimer: PlainBizBench provides publicly available IRS and Census data for informational purposes only. This is not financial, tax, or business advice. Consult a qualified accountant or financial advisor for business-specific guidance.
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBizBench Editorial

According to the U.S. Census Bureau, which released its 2023 County Business Patterns dataset in June 2025, PlainBizBench benchmarks 2,002 U.S. industries across 24 NAICS sectors against Internal Revenue Service Statistics of Income data. See our methodology for the full compilation process.

Every figure on PlainBizBench is rendered directly from federal source data, no number is typed in by an editor. This page aggregates every industry within this sector, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.

Disclaimer: Public IRS/Census data, not financial or tax advice. See our full disclaimer.