Petroleum and Coal Products Manufacturing in Maryland

NAICS 324 · MD

The Petroleum and Coal Products Manufacturing industry in Maryland has 56 establishments, according to the Bureau of Labor Statistics. This register lists 85 facilities in Maryland. TAMKO Building Products LLC - Frederick, located in Frederick, employed 105 people in 2025.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Map, cities and product lines

Biggest counties

Baltimore12 Baltimore8 Prince George's8 Anne Arundel6 Montgomery6 Carroll5 Charles5 Frederick5

Biggest cities

Baltimore (10)Waldorf (4)Hagerstown (3)Silver Spring (3)Aberdeen (3)Frederick (3)Finksburg (3)Clinton (3)Curtis Bay (2)Eden (2)

Plants in Maryland3 FACILITIES

Facility	City	Employees	Status
TAMKO Building Products LLC - Frederick	Frederick	100–499	LIKELY ACTIVE
Richard F. Kline, INC	Frederick	—	LIKELY ACTIVE
Frederick Asphalt Co/essroc Site	Frederick	—	UNVERIFIED

Search all 85 facilities

All petroleum and coal products manufacturing nationwide · All manufacturing in Maryland