Manufacturing ·NAICS 331

NAICS 331 · IRS SOI 2023 · Census CBP

Primary Metal Manufacturing - Industry Benchmarks

$83,673/yr average annual pay, with 319 SBA loans on record for NAICS 331.

1.3%
Net margin
355K
Workers employed
$83,673/yr
Avg payroll / employee
$308M
SBA lending, FY20–26

Data updated July 2026

The verdict · NAICS 331

Primary Metal Manufacturing runs a 1.3% pre-tax net margin - significantly below average, typical of high-volume, low-margin sectors - across 4K establishments employing 355K workers.

1.3%
Pre-tax net margin (IRS SOI)
355K
Workers employed (Census CBP)
$83,673/yr
Avg payroll / employee
$308M
SBA lending, FY20–26

Benchmarking Insights for Primary Metal Manufacturing

Primary Metal Manufacturing sits inside Manufacturing at a 1.3% net margin (significantly below average, typical of high-volume, low-margin sectors), $279.8B in aggregate receipts across 5,454 returns, averaging $51.3B per establishment.

3,570 establishments employ 354,914 workers (99.4/location) at $83,673/yr average annual pay. Indiana leads employment, followed by Ohio and Pennsylvania.

Profit Margin

1.3%

Net income ÷ total receipts (IRS SOI)

Total Receipts

$279.8B

Annual revenue (IRS SOI)

Net Income

$3.6B

Pre-tax net income

Employment

354,914

Total employees (Census CBP)

Avg Payroll / Employee

$83,673/yr

Annual compensation

Establishments

3,570

Business locations

Release-over-release change

What changed from Census CBP 2022 to 2023

Employment increased by 3,192; establishment count decreased by 9. This comparison uses two published national Census County Business Patterns releases; suppressed fields are omitted rather than estimated.

Where each dollar of Primary Metal Manufacturing revenue goes

Workforce scale

Primary Metal Manufacturing margin vs national reference points

Primary Metal Manufacturing net margin 4.3%
Cross-industry median (5%)

p25/median/p75 = 3%/5%/8%

Business Structure Breakdown

How businesses in this industry are legally structured (IRS SOI)

C Corporation
5,454 returns 100%

Margin: 1.3% · Receipts: $279.8B

Financial Detail

Total Tax Returns Filed
5,454
Avg Receipts per Business
$51.3B
Annual Payroll (Total)
$29.7B
Avg Employees per Establishment
99.4

Sub-Industries

Industry Profit Margin
Alumina and Aluminum Production and Processing

NAICS 3313

N/A
Foundries

NAICS 3315

9.5%
Iron and Steel Mills and Ferroalloy Manufacturing

NAICS 3311

-0.2%
Nonferrous Metal (except Aluminum) Production and Processing

NAICS 3314

1.1%
Steel Product Manufacturing from Purchased Steel

NAICS 3312

N/A

Top States by Employment

State Employment
Indiana 38,300
Ohio 35,162
Pennsylvania 32,639
Texas 22,390
Alabama 19,281
Illinois 18,588
Michigan 17,934
Kentucky 13,009
California 11,550
Tennessee 11,437

Showing top 10 of 49 states

SBA Lending Activity

SBA FY2020–2026

SBA Loans Approved

319

Total Loan Volume

$308M

Avg Loan Size

$966K

Jobs Supported

5,036

Program Breakdown

7(a) 257 (81%)
504 62 (19%)

Top SBA Lender

The Huntington National Bank

43 loans in this industry

New Business Share

11.6% of borrowers were new/startup businesses

Annual Lending Trend (7 yrs)

2020
58
2021
47
2022
46
2023
45
2024
64
2025
51
2026
8

Frequently Asked Questions

What is the average revenue for Primary Metal Manufacturing?
$279.8B in total annual receipts across all Primary Metal Manufacturing businesses. Average per business: $51.3B.
How profitable is Primary Metal Manufacturing?
1.3% net profit margin, significantly below average, typical of high-volume, low-margin sectors.
How many businesses are in Primary Metal Manufacturing?
3,570 business establishments. Together they employ 354,914 workers.
What is the average payroll per employee in Primary Metal Manufacturing?
$83,673/yr average annual pay per employee. Businesses average 99.4 employees per establishment.
Which states have the most Primary Metal Manufacturing employment?
Indiana leads with 38,300 workers. Ohio (35,162) and Pennsylvania (32,639) round out the top three.
How much SBA lending does Primary Metal Manufacturing receive?
Primary Metal Manufacturing businesses received 319 SBA loans totaling $308 million between FY2020 and FY2026. The average loan size was $966K. These loans supported 5,036 jobs at origination. Most lending (81%) came through the SBA 7(a) program.

Comparable industry benchmarks

These links are calculated from the current national dataset. They are comparison paths, not recommendations or evidence that businesses operate alike.

How this ranks: Primary Metal Manufacturing reports a higher net margin than 6% of the 79 IRS-tracked industries at the same NAICS detail level. Its Census employment total exceeds 26% of that same 77-industry cohort. Calculated by ranking this industry's reported value against every other industry at the same NAICS digit-level, not the whole dataset: comparing a 6-digit detail industry to a 2-digit sector would mix incompatible scales.

Closest reported net margins

Same NAICS detail level, ordered by the smallest difference in reported IRS pre-tax margin.

Closest workforce scale

Same NAICS detail level, ordered by the smallest difference in reported Census employment.

Benchmarking Primary Metal Manufacturing

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

Sources: IRS Statistics of Income (SOI) Business Tax Statistics · Census Bureau County Business Patterns 2023

NAICS 331 · Data year: 2023

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 against Internal Revenue Service Statistics of Income data. See our methodology for the full compilation process.

Source: U.S. Census Bureau, County Business Patterns / SUSB Industry employment scale, payroll, and firm-size benchmarks · 2023

Every figure on PlainBizBench is rendered directly from federal source data, no number is typed in by an editor. This page aggregates profit-margin, payroll, entity-type, and SBA-lending benchmarks for this industry, 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.