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US Standard Industrial Classification (SIC) Code Lookup

Division: F - Wholesale Trade

US-SIC Code 5031 - Lumber, Plywood, Millwork, and Wood Panels

Industry Description

Establishments, with or without yards, primarily engaged in the wholesale distribution of rough, dressed, and finished lumber (but not timber); plywood; reconstituted wood fiber products; doors and windows and their frames (all materials); wood fencing; and other wood or metal millwork.

Business Examples

Common types of business activities within US SIC 5031 - Lumber, Plywood, Millwork, and Wood Panels are:

  • Composite board products, wood-based-wholesale
  • Door frames, all materials-wholesale
  • Enameled tileboard (hardboard)-wholesale
  • Fencing, wood-wholesale
  • Hardboard-wholesale
  • Kitchen cabinets to be built in-wholesale
  • Lumber rough, dressed, and finished-wholesale
  • Medium density fiberboard-wholesale
  • Metal doors, sash and trim-wholesale
  • Millwork-wholesale
  • Molding all materials-wholesale
  • Paneling wood-wholesale
  • Particleboard-wholesale
  • Plywood-wholesale
  • Shingles wood-wholesale
  • Structural assemblies prefabricated wood-wholesale
  • Veneer-wholesale
  • Wallboard-wholesale
  • Window frames all materials-wholesale
  • Windows and doors-wholesale
  • Wood siding-wholesale

IBISWorld Industry Research Report

Lumber Wholesaling in the US (42331)

Revenue 2025

$146.3bn

Growth 2025

-1.70%

Key Trends

  • Improved downstream demand has pushed lumber prices up, bolstering revenue and profit

  • The decline in nonresidential construction activities has dampened industry demand

  • Increasing nonresidential construction will fuel demand for lumber and millwork products

Products and Services

US-SIC Hierarchy 5031 - Lumber, Plywood, Millwork, and Wood Panels

US-SIC Code 5031 - Lumber, Plywood, Millwork, and Wood Panels sits in the 2-digit Lumber, Plywood, Millwork, and Wood Panels sector. US SIC codes can be 2 to 8 digits and the further along the hierarchy, the more detailed and specific the category will be.

Division: F

Division Title: Wholesale Trade

2 Digits 3 Digits 4 Digits

Extended US-SIC Hierarchy for 5031 - Lumber, Plywood, Millwork, and Wood Panels

For business marketing and targeting, US SIC Codes have been extended to provide more specific classifications within US-SIC 5031 - Lumber, Plywood, Millwork, and Wood Panels. Extended US SIC Codes are being continuously updated to reflect the current business environment.

6 Digit SIC Codes

  • 503101 Lumber-exporters & importers (whol)
  • 503102 Windows-wholesale
  • 503103 Louvers (wholesale)
  • 503104 Plywood & veneers-wholesale
  • 503105 Pallets & skids (wholesale)
  • 503106 Poles (wholesale)
  • 503107 Hardwoods-wholesale
  • 503108 Timber & timberland companies (whol)
  • 503109 Lumber-wholesale
  • 503110 Lath (wholesale)
  • 503111 Millwork-wholesale
  • 503112 Moldings (wholesale)
  • 503113 Cabinets-wholesale
  • 503114 Building materials-wholesale
  • 503115 Ceiling materials-wholesale
  • 503116 Doors & frames-coml & industrial (whol)
  • 503117 Door frames (wholesale)
  • 503118 Kitchen cabinets-wholesale
  • 503119 Doors-wholesale
  • 503120 Cabinet makers equipment & supls (whol)
  • 503121 Stakes (wholesale)
  • 503122 Picture frames-mfrs supplies (whol)
  • 503123 Lumber mill representatives (wholesale)
  • 503124 Dowels (wholesale)
  • 503125 Lumber-drying (wholesale)
  • 503126 Doors-sliding (wholesale)
  • 503127 Storm windows & doors-wholesale
  • 503128 Bamboo-wholesale
  • 503130 Carports-wholesale
  • 503131 Counter tops-wholesale
  • 503132 Doors-wood-wholesale
  • 503133 Furniture frames-wholesale
  • 503134 Furniture legs-wholesale
  • 503135 Jalousies-wholesale
  • 503136 Paneling-distributors
  • 503138 Railings-wholesale
  • 503139 Railroad ties-wholesale
  • 503141 Screen door & window-wholesale
  • 503142 Shutters-wholesale
  • 503143 Skylights-wholesale
  • 503144 Wallboard & plasterboard-wholesale
  • 503145 Lath-mtl plaster composition/etc (whol)
  • 503146 Log exporters
  • 503147 Windows-wood-wholesale
  • 503148 Cedar products (wholesale)
  • 503149 Log buyers (wholesale)
  • 503150 Lumber brokers
  • 503151 Window well covers (wholesale)
  • 503152 Thresholds (wholesale)

8 Digit SIC Codes

  • 50310000 Lumber, plywood, and millwork
  • 50310100 Building materials, exterior
  • 50310101 Fencing, wood
  • 50310102 Shingles, wood
  • 50310103 Siding, wood
  • 50310104 Trim, sheet metal
  • 50310200 Building materials, interior
  • 50310201 Enameled tileboard
  • 50310202 Molding, all materials
  • 50310203 Paneling, wood
  • 50310204 Veneer
  • 50310205 Wallboard
  • 50310300 Doors and windows
  • 50310301 Door frames, all materials
  • 50310302 Doors, combination, screen-storm
  • 50310303 Doors, garage
  • 50310304 Doors, nec
  • 50310305 Metal doors, sash and trim
  • 50310306 Window frames, all materials
  • 50310307 Windows
  • 50310308 Skylights, all materials
  • 50319900 Lumber, plywood, and millwork, nec
  • 50319901 Composite board products, woodboard
  • 50319902 Hardboard
  • 50319903 Kitchen cabinets
  • 50319904 Lumber: rough, dressed, and finished
  • 50319905 Medium density fiberboard
  • 50319906 Millwork
  • 50319907 Pallets, wood
  • 50319908 Particleboard
  • 50319909 Plywood
  • 50319910 Structural assemblies, prefabricated: wood

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US SIC Code Directory

Each US SIC Code is part of a Division, which corresponds with a numerical range. Select a Division category from the table below, then drill down to discover the industries within that Division.

Division US-SIC Code Sector title
A 01-09 Agriculture, Forestry, and Fishing
B 10-14 Mining
C 15-17 Construction
D 20-39 Manufacturing
E 40-49 Transportation, Communications, Electric, Gas, and Sanitary Services
F 50-51 Wholesale Trade
G 52-59 Retail Trade
H 60-67 Finance, Insurance, and Real Estate
I 70-89 Services
J 90-99 Public Administration

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