5 States With The Most Factories In The US

4. Illinois

Total Manufacturing Output in 2021: $114.73 billion

Manufacturing Employment in December 2021: 557,000

Illinois has a strong manufacturing presence in the US. The diverse manufacturing industry in the state is a key contributor to its economy. The state’s manufacturing sector had a total output of $114.73 billion and contributed to the employment of 557,000 individuals in 2021.