Employment
57,092
Total employees (Census CBP)
Manufacturing ·NAICS 33151
NAICS 33151 · IRS SOI (C corp) · Census CBP 2023
$69,578/yr average annual pay, with 19 SBA loans on record for NAICS 33151.
Data updated August 2026
The verdict · NAICS 33151
Michigan leads Ferrous Metal Foundries activity nationally, across 516 establishments employing 57K workers. IRS SOI doesn't publish margin data at this NAICS level.
Use Ferrous Metal Foundries's NAICS benchmark as a comparison point, not a forecast for one business.
Ferrous Metal Foundries is reported here with financial measures from IRS Statistics of Income and workforce measures from Census County Business Patterns. The page keeps those source systems distinct, shows unavailable fields rather than estimating them, and links the underlying industry context so readers can compare the same NAICS activity before interpreting a margin or payroll figure.
Source: IRS SOI (C corporation headline) and Census County Business Patterns 2023
Ferrous Metal Foundries sits inside Manufacturing.
516 establishments employ 57,092 workers (110.6/location) at $69,578/yr average annual pay. Michigan leads employment, followed by Ohio and Alabama.
Ferrous Metal Foundries sits in the 42nd percentile for employment among 5-digit NAICS industries with reported data.
Employment
57,092
Total employees (Census CBP)
Avg Payroll / Employee
$69,578/yr
Annual compensation
Establishments
516
Business locations
Release-over-release change
Employment increased by 481; establishment count decreased by 30. This comparison uses two published national Census County Business Patterns releases; suppressed fields are omitted rather than estimated.
Subscribe to this industry's release updates (RSS)| Industry | Profit Margin |
|---|---|
| Iron Foundries NAICS 331511 | N/A |
| Steel Foundries (except Investment) NAICS 331513 | N/A |
| Steel Investment Foundries NAICS 331512 | N/A |
| State | Employment |
|---|---|
| Michigan | 4,993 |
| Ohio | 4,569 |
| Alabama | 4,327 |
| Pennsylvania | 3,888 |
| Texas | 3,636 |
| California | 1,790 |
| Tennessee | 1,451 |
| Minnesota | 1,386 |
| Washington | 1,219 |
| Kansas | 1,182 |
Showing top 10 of 35 states
SBA Loans Approved
19
Total Loan Volume
$15M
Avg Loan Size
$802K
Jobs Supported
389
Top SBA Lender
TD Bank, National Association
2 loans in this industry
New Business Share
10.5% of borrowers were new/startup businesses
Two IRS/Census peer sets for Ferrous Metal Foundries, both at NAICS level 5 and excluding this code so the neighborhoods are not self-links.
According to Census County Business Patterns 2023, Ferrous Metal Foundries ranks #321 of 551 U.S. industries at the 5-digit NAICS level by total employment.
Nearest peer industries by ABS(Census employment) (57,092 here).
Read with this industry: Industry employment trends · Manufacturing · Rankings
Sources: IRS Statistics of Income (SOI) Business Tax Statistics · Census Bureau County Business Patterns 2023
NAICS 33151 · CBP 2023 · IRS SOI
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.
Read our methodology - how this data is sourced, computed, and verified.
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.