Metal foundries in the USA
EPA records list 1,563 active foundries in the US, facilities with codes for iron, steel, aluminum and other metal castings. The most are in California, Michigan and Pennsylvania, with 29% of the total.
- Product
- Metal foundries
- Facilities
- 1,563
- States
- 46
- NAICS
- 331511 and 5 related codes
- Revised
- November 1, 2026
By state
States with at least 15 such facilities have their own page with the facility list.
| State | Facilities | Share |
|---|---|---|
| California | 184 | 11.8% |
| Michigan | 135 | 8.6% |
| Pennsylvania | 129 | 8.3% |
| Ohio | 123 | 7.9% |
| Indiana | 93 | 6.0% |
| Wisconsin | 91 | 5.8% |
| Illinois | 83 | 5.3% |
| Alabama | 70 | 4.5% |
| Texas | 56 | 3.6% |
| Missouri | 53 | 3.4% |
| Minnesota | 45 | 2.9% |
| Iowa | 40 | 2.6% |
| New York | 35 | 2.2% |
| Massachusetts | 32 | 2.0% |
| Washington | 32 | 2.0% |
| Tennessee | 30 | 1.9% |
| New Jersey | 26 | 1.7% |
| Virginia | 25 | 1.6% |
| Oregon | 24 | 1.5% |
| Florida | 21 | 1.3% |
| Kansas | 20 | 1.3% |
| North Carolina | 19 | 1.2% |
| South Carolina | 19 | 1.2% |
| Georgia | 18 | 1.2% |
| Kentucky | 18 | 1.2% |
| Oklahoma | 18 | 1.2% |
| Connecticut | 17 | 1.1% |
| New Hampshire | 14 | 0.9% |
| Arkansas | 12 | 0.8% |
| Nebraska | 12 | 0.8% |
| Louisiana | 10 | 0.6% |
| Mississippi | 10 | 0.6% |
| Rhode Island | 8 | 0.5% |
| Colorado | 7 | 0.4% |
| Utah | 6 | 0.4% |
| West Virginia | 5 | 0.3% |
| Arizona | 4 | 0.3% |
| Nevada | 4 | 0.3% |
| Maryland | 3 | 0.2% |
| Montana | 3 | 0.2% |
| South Dakota | 3 | 0.2% |
| Idaho | 2 | 0.1% |
| Maine | 1 | 0.1% |
| New Mexico | 1 | 0.1% |
| Vermont | 1 | 0.1% |
| Wyoming | 1 | 0.1% |
EPA ECHO active facilities listing NAICS 331511, 331512, 331513, 331523, 331524, 331529. Codes are reported by facilities and not checked here. How these records work.
Biggest clusters
- Muskegon, MI: 16
- Milwaukee, WI: 13
- Portland, OR: 12
- Birmingham, AL: 11
- Chicago, IL: 9
- Grand Rapids, MI: 8
- Cleveland, OH: 8
- Anniston, AL: 7
Codes counted
- Iron Foundries (NAICS 331511)
- Steel Investment Foundries (NAICS 331512)
- Steel Foundries (except Investment) (NAICS 331513)
- Nonferrous Metal Die-Casting Foundries (NAICS 331523)
- Aluminum Foundries (except Die-Casting) (NAICS 331524)
- Other Nonferrous Metal Foundries (except Die-Casting) (NAICS 331529)
This sits inside primary metals manufacturing, which has 3,570 establishments and 354,914 jobs (Census, 2023). See the industry.