Plastic injection molding companies in the USA
EPA records list 3,730 active plastic injection molders in the US, facilities with codes for plastic parts and products made by molding, including injection-molded components. The most are in California, Michigan and Ohio, with 25% of the total.
- Product
- Plastic injection molding companies
- Facilities
- 3,730
- States
- 49
- NAICS
- 326121, 326122, 326199
- 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 | 414 | 11.1% |
| Michigan | 274 | 7.3% |
| Ohio | 248 | 6.6% |
| Texas | 233 | 6.2% |
| Indiana | 181 | 4.9% |
| Florida | 180 | 4.8% |
| Pennsylvania | 171 | 4.6% |
| Illinois | 147 | 3.9% |
| North Carolina | 143 | 3.8% |
| Massachusetts | 133 | 3.6% |
| Wisconsin | 107 | 2.9% |
| Georgia | 99 | 2.7% |
| Missouri | 95 | 2.5% |
| Alabama | 90 | 2.4% |
| New York | 90 | 2.4% |
| Tennessee | 85 | 2.3% |
| South Carolina | 81 | 2.2% |
| Minnesota | 65 | 1.7% |
| Virginia | 65 | 1.7% |
| Kentucky | 59 | 1.6% |
| Washington | 59 | 1.6% |
| Iowa | 55 | 1.5% |
| Kansas | 55 | 1.5% |
| New Jersey | 53 | 1.4% |
| Arkansas | 51 | 1.4% |
| Louisiana | 51 | 1.4% |
| Oklahoma | 45 | 1.2% |
| Colorado | 38 | 1.0% |
| Mississippi | 36 | 1.0% |
| Maryland | 34 | 0.9% |
| Nebraska | 32 | 0.9% |
| Arizona | 31 | 0.8% |
| New Hampshire | 30 | 0.8% |
| Oregon | 29 | 0.8% |
| Utah | 28 | 0.8% |
| Connecticut | 22 | 0.6% |
| Rhode Island | 21 | 0.6% |
| Nevada | 17 | 0.5% |
| Vermont | 17 | 0.5% |
| West Virginia | 14 | 0.4% |
| North Dakota | 10 | 0.3% |
| Delaware | 9 | 0.2% |
| Maine | 9 | 0.2% |
| South Dakota | 7 | 0.2% |
| Idaho | 6 | 0.2% |
| Montana | 5 | 0.1% |
| New Mexico | 4 | 0.1% |
| Hawaii | 1 | 0.0% |
| Wyoming | 1 | 0.0% |
EPA ECHO active facilities listing NAICS 326199, 326121, 326122. Codes are reported by facilities and not checked here. How these records work.
Biggest clusters
- Houston, TX: 37
- Jacksonville, FL: 20
- Elkhart, IN: 20
- Ontario, CA: 14
- Grand Rapids, MI: 14
- Dallas, TX: 14
- Anaheim, CA: 12
- Leominster, MA: 12
Codes counted
- All Other Plastics Product Manufacturing (NAICS 326199)
- Unlaminated Plastics Profile Shape Manufacturing (NAICS 326121)
- Plastics Pipe and Pipe Fitting Manufacturing (NAICS 326122)
This sits inside plastics and rubber manufacturing, which has 11,392 establishments and 815,991 jobs (Census, 2023). See the industry.