The map below shows counties with manufacturing, government, real estate, mining, and agriculture as their predominant industry. The map shows that manufacturing is the leading industry in counties in the Midwest and South while agriculture is centered primarily within the Plains region. Mining is clustered in west Texas, Nevada, western North Dakota, and the Appalachian region of Ohio, Pennsylvania, and West Virginia, with additional pockets of concentration spread through the Rocky Mountain Range. Real estate is concentrated on the coasts, specifically in the Pacific Northwest, Florida, and northern New England. Government is spread much more evenly across the country.
For details: https://ssti.org/blog/useful-stats-gdp-county-and-industry-contribution?utm_source=SSTI+Weekly+Digest&utm_campaign=3d30efbad4-EMAIL_CAMPAIGN_2019_12_19_03_02&utm_medium=email&utm_term=0_ecf5992d4c-3d30efbad4-220101229