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Nonmetallic Mineral Product Manufacturing

20,947 FACILITIESAll Census product lines →

NAICS 327

Map, cities and product lines
Map of United States manufacturing facilities

Product lines reported here

These are counts by industry: the Economic Census records what establishments in nonmetallic mineral product manufacturing reported producing, and never names a plant.

Plants in this industry20,947 FACILITIES

FacilityCityStateEmployeesStatus
Gillinder Brothers INCPort JervisNY20–99 ACTIVE
Gp/rm Prestress, LLCKapoleiHI100–499 ACTIVE
Guardian Industries Corporation-carleton FacilityCarletonMI100–499 ACTIVE
Guardian Industries - DewittDe WittIA100–499 ACTIVE
Hammons Products CompanyStocktonMO20–99 ACTIVE
Hebron Brick COHebronND20–99 ACTIVE
Hemlock Semiconductor Operations LLCHemlockMI500+ ACTIVE
High Concrete Group, LLCDenverPA100–499 ACTIVE
Hollingsworth and Vose Fiber CompanyCorvallisOR100–499 ACTIVE
Hubbell Lenoir City, INC.Lenoir CityTN100–499 ACTIVE
Ironrock Capital INCCantonOH100–499 ACTIVE
James Hardie Building Products INCPulaskiVA100–499 ACTIVE
Kansas Sand & Concrete, INC.TopekaKS20–99 ACTIVE
Keizer-morris International INCNorth BranchMI— ACTIVE
Knauf Insulation GmbhShelbyvilleIN100–499 ACTIVE
Knife River Prestress, INCNewman LakeWA100–499 ACTIVE
Kohler CO. - Brownwood - Main PlantBrownwoodTX100–499 ACTIVE
Lakelands Concrete Products, INC.LimaNY— ACTIVE
Locke Solutions, LLCHoustonTX100–499 ACTIVE
Ludowici Roof TileNew LexingtonOH100–499 ACTIVE
Magnesita Refractories/yorkYorkPA100–499 ACTIVE
Mccue Memorial Co., INC.CastletonVT20–99 ACTIVE
Mmc Materials INCMadisonMS— ACTIVE
Morgan Advanced Ceramics, INCHudsonNH20–99 ACTIVE
Morgan Advanced Ceramics, INC.HaywardCA100–499 ACTIVE
Motawi Enterprise INCAnn ArborMI20–99 ACTIVE
Mountain West Precast LLCBrigham CityUT20–99 ACTIVE
Nansemond Pre-cast Concrete Company INCSuffolkVA20–99 ACTIVE
National Magnetics Group, INC.BethlehemPA100–499 ACTIVE
Neiman/hoeller INCVan NuysCA1–19 ACTIVE
Ngk Ceramics Usa, INC.MooresvilleNC500+ ACTIVE
Northeast Prestressed Prod LLCCressonaPA20–99 ACTIVE
Nsg Glass North America, INC.LuckeyOH100–499 ACTIVE
Nucor Steel- BerkeleyHugerSC500+ ACTIVE
O'keeffe's, INCBrisbaneCA100–499 ACTIVE
Owens Brockway Glass Container INCLapelIN100–499 ACTIVE
Patriot Armored Systems LLCLeeMA— ACTIVE
Pfg Precision Optics INCOcean SpringsMS20–99 ACTIVE
Plycem USA LLCNorth WilkesboroNC100–499 ACTIVE
Precision Glassblowing of Colorado, INC.CentennialCO20–99 ACTIVE
Pre-con ProductsSimi ValleyCA20–99 ACTIVE
Pro-cast Products INCHighlandCA100–499 ACTIVE
Quality Vision International INC.RochesterNY100–499 ACTIVE
Quick Crete Products CorporationNorcoCA100–499 ACTIVE
Reading Precast INCLeesportPA20–99 ACTIVE
Refractron Technologies CORP.NewarkNY20–99 ACTIVE
Roman Stone Construction CompanyBay ShoreNY20–99 ACTIVE
Saint Gobain AbrasivesWatervlietNY100–499 ACTIVE
Sauereisen INCPittsburghPA20–99 ACTIVE
Schott North America, INC.DuryeaPA100–499 ACTIVE

Search all 20,947 facilities

Common questions

How many nonmetallic mineral product manufacturing facilities are in the United States?

As of AUG 2026, FactoryRegistry lists 20,947 nonmetallic mineral product manufacturing facilities (NAICS 327) across 56 states, compiled from EPA, OSHA and Census records.

Which state has the most nonmetallic mineral product manufacturing facilities?

California, with 2,776 facilities listed.

How many nonmetallic mineral product manufacturing facilities are still operating?

6,684 of the 20,947 listed carry a recent operating signal in federal data — the register's Active or Likely active status. The rest are listed from their filings alone, which is a gap in the federal record rather than evidence that a plant has closed.