327310

Analysis

NAICS 327310 is the 2022 national industry for cement manufacturing, part of 32731 (Cement Manufacturing). Census lists 3 example activities under it in the official index.

County Business Patterns counts 192 US establishments in this code in 2023, employing 12,781 people at an average annual payroll of $81,517 per employee (70th percentile of national industries). 22% of the establishments have fewer than five employees, which points to larger operations.

Its index entries, the activities Census uses to assign businesses to this code, include cement (e.g., hydraulic, masonry, Portland, pozzolana)…, cement clinker manufacturing and natural (i.e., calcined earth) cement manufacturing.

Its goods appear in 5 statistical lines of the US tariff schedule, mostly under headings 2523 (portland cement, aluminous cement, slag cement…). That link is how import data is matched to domestic producers, for example in trade-remedy cases.

Census lists 4 related activities that belong elsewhere, most often in 212312, 327410, 327320 and 327999. Businesses that do several things are classified by their primary activity, the one that generates the most value, so check those boundaries before settling on this code.

For example, mining or quarrying limestone are classified in 212312 (Crushed and Broken Limestone Mining and Quarrying) instead.