Nonmetallic Mineral Product Manufacturing in California

NAICS 327 · CA

California is home to Nonmetallic Mineral Product Manufacturing, industry NAICS code 327. The Bureau of Labor Statistics counted 1,291 establishments in California in 2024, with an annual payroll of about $2.5 billion. Listed in the register are 2,780 facilities in 532 cities across California as of 2026.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Plants in California2,780 FACILITIES

Facility	City	Employees	Status
GCGalt CG	Galt	100–499	◐ LIKELY ACTIVE
GMGardena (Adcock Mfg Corp)	Gardena	1–19	◐ LIKELY ACTIVE
GPGardena Plant #25	Gardena	20–99	◐ LIKELY ACTIVE
GPGC Products LLC	Lincoln	20–99	◐ LIKELY ACTIVE
GCGilwin Company	Modesto	20–99	◐ LIKELY ACTIVE
GTGlassfab Tempering Services, Inc.	Tracy	100–499	◐ LIKELY ACTIVE
GTGlassfab Tempering Services, Inc.	Tracy	20–99	◐ LIKELY ACTIVE
HRHanford Ready Mix Plant	Hanford	1–19	◐ LIKELY ACTIVE
HMHC Muddox	Sacramento	20–99	◐ LIKELY ACTIVE
HMHi-Grade Materials-Hesperia Transportation	Hesperia	20–99	◐ LIKELY ACTIVE
HMHi-Grade Materials - Littlerock Ready Mix	Littlerock	20–99	◐ LIKELY ACTIVE
HMHi-Grade Materials- Oro Grande	Oro Grande	20–99	◐ LIKELY ACTIVE
HMHi-Grade Materials-Twentynine Palms Ready Mix	Twentynine Palms	1–19	◐ LIKELY ACTIVE
IGIntegrated Glass Concepts, INC.	Benicia	—	◐ LIKELY ACTIVE
IIIsolatek International- SBCA	San Bernardino	1–19	◐ LIKELY ACTIVE
JWJim Wong	Lincoln	—	◐ LIKELY ACTIVE
LCLABC Custom Building Products	Santa Fe Springs	20–99	◐ LIKELY ACTIVE
LFLake Forest Plant #18	Foothill Ranch	1–19	◐ LIKELY ACTIVE
LCLamart California INC	San Diego	—	◐ LIKELY ACTIVE
LILamvin inc	Oceanside	1–19	◐ LIKELY ACTIVE
LDLathrop Division	Lathrop	20–99	◐ LIKELY ACTIVE
LQLAX Quikrete	Sun Valley	20–99	◐ LIKELY ACTIVE
LRLAX Ready-Mix Plant	Los Angeles	20–99	◐ LIKELY ACTIVE
LRLemoore Ready Mix Plant	Lemoore	1–19	◐ LIKELY ACTIVE
LQLGB Quikrete	City of Industry	20–99	◐ LIKELY ACTIVE
LCLivingston's Concrete Service, Inc. - Corporate	Roseville	20–99	◐ LIKELY ACTIVE
LCLivingston's Concrete Service, Inc. - Plant 4	Marysville	20–99	◐ LIKELY ACTIVE
LILMI, Inc-Lodi	Lodi	20–99	◐ LIKELY ACTIVE
LILMI, Inc.-Ontario	Ontario	100–499	◐ LIKELY ACTIVE
LBLong Beach Plant #47	Long Beach	1–19	◐ LIKELY ACTIVE
LPLucerne Plant #34	Lucerne Valley	1–19	◐ LIKELY ACTIVE
MCMarble City Company	san Carlos, CA	20–99	◐ LIKELY ACTIVE
MRMathews Ready Mix - Yuba City	Yuba City	20–99	◐ LIKELY ACTIVE
MLMicrotul LLC	Petaluma	—	◐ LIKELY ACTIVE
MPMiramar Plant #33	Miramar	20–99	◐ LIKELY ACTIVE
MRMiramar Ready Mix Plant	San Diego	20–99	◐ LIKELY ACTIVE
MVMoreno Valley CT	Moreno Valley	20–99	◐ LIKELY ACTIVE
MAMorgan Advanced Materials	Auburn	20–99	◐ LIKELY ACTIVE
NCNational City Cement Terminal	National City	1–19	◐ LIKELY ACTIVE
NGNational Gypsum: Gold Bond	Richmond, CA	20–99	◐ LIKELY ACTIVE
NMNCAM Monarch Mountain	Tulelake	1–19	◐ LIKELY ACTIVE
NRNormandie Ready Mix Plant	Torrance	1–19	◐ LIKELY ACTIVE
OPOceanside Plant	Oceanside	1–19	◐ LIKELY ACTIVE
OSOM Stone, Inc. 1	Sacramento	1–19	◐ LIKELY ACTIVE
OOntpc	Menifee	20–99	◐ LIKELY ACTIVE
Outdoor Creations Inc. - LOC 01	Anderson	1–19	◐ LIKELY ACTIVE
Outdoor Creations, Inc. - LOC 03	Anderson	1–19	◐ LIKELY ACTIVE
OIOwens Illinois	Tracy	100–499	◐ LIKELY ACTIVE
PCPacific Clay Products, Inc. Castaic	Castaic	1–19	◐ LIKELY ACTIVE
PCPacific Clay Products, Inc. Lake Elsinore	Lake Elsinore	100–499	◐ LIKELY ACTIVE

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