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Montana · Plumber / Pipefitter · 21 counties

Plumber / Pipefitter prevailing wage, Yellowstone County group, Montana (21 counties)

DLI sets the same plumber or pipefitter rates, row for row, in 21 counties: Big Horn, Carbon, Carter, Custer, Daniels, Dawson, Fallon, Garfield, McCone, Musselshell, Powder River, Prairie, Richland, Roosevelt, Rosebud, Sheridan, Stillwater, Treasure, Valley, Wibaux and Yellowstone. Every figure on this page applies in each of them.

$62.31an hour, base wage + fringe benefits (our sum)

$41.00 base wage + $21.31 fringe benefits · Building Construction · District 4 (Billings, Miles City and Sidney)

On Montana public works in each of these 21 counties, a plumber or pipefitter must be paid at least $62.31 an hour: a $41.00 base wage plus $21.31 in benefits. DLI prints no total, so $62.31 is our sum of the two.

DLI 2026 rates, revised April 25, 2026; this rate, effective April 25, 2026. "The wage rates applicable to a particular public works project are those in effect at the time the bid specifications are advertised" (ARM 24.17.127). Checked against erd.dli.mt.gov on October 25, 2026.

DLI lists 3 plumber or pipefitter rates for each of these counties, from $62.31 to $70.58 an hour. See all of them.

Base wage and fringe benefits: $41.00 + $21.31

The base wage is the taxable hourly wage. DLI prints the benefits as one hourly figure, not itemized; it can go to health, pension, vacation and training plans, or be paid as cash where the state allows.

Base wage (taxable)$41.00
Fringe benefits (one figure, not itemized)$21.31
Base + benefits (our sum; DLI prints no total)$62.31

When does this rate change?

Every plumber or pipefitter rate in the Yellowstone County group

As DLI lists them. The highlighted row is the one this page leads with.

  1. SPRINKLER FITTERSBuilding Construction · District 4 (Billings, Miles City and Sidney)$70.58
  2. PLUMBERS, PIPEFITTERS, AND STEAMFITTERSHeavy Construction · Statewide$66.42
  3. PLUMBERS, PIPEFITTERS, AND STEAMFITTERSBuilding Construction · District 4 (Billings, Miles City and Sidney)$62.31
Hourly rate of each plumber or pipefitter classification in the Yellowstone County group, highest first, split into wage and benefits.
ClassificationBase wageFringe benefitsTotal rateEffective
PLUMBERS, PIPEFITTERS, AND STEAMFITTERSBuilding ConstructionDistrict 4 (Billings, Miles City and Sidney)$41.00 $21.31 $62.31 Apr 25, 2026
SPRINKLER FITTERSBuilding ConstructionDistrict 4 (Billings, Miles City and Sidney)$44.11 $26.47 $70.58 Apr 25, 2026
PLUMBERS, PIPEFITTERS, AND STEAMFITTERSHeavy ConstructionStatewide$46.95 $19.47 $66.42 Apr 25, 2026

Davis-Bacon plumber or pipefitter rates in these counties

The counties share DLI's rates, but not always the same federal wage determination. Montana's law doesn't apply where federal law sets the rate, so a Davis-Bacon job uses the federal schedule (DLI FAQ).

CountyFederal classificationBase + fringeWDvs DLI
Big Horn CountyFederal rates listed on the county page; no one-to-one match
Carbon CountyFederal rates listed on the county page; no one-to-one match
Carter CountyFederal rates listed on the county page; no one-to-one match
Custer CountyFederal rates listed on the county page; no one-to-one match
Daniels CountyFederal rates listed on the county page; no one-to-one match
Dawson CountyFederal rates listed on the county page; no one-to-one match
Fallon CountyFederal rates listed on the county page; no one-to-one match
Garfield CountyFederal rates listed on the county page; no one-to-one match
McCone CountyFederal rates listed on the county page; no one-to-one match
Musselshell CountyFederal rates listed on the county page; no one-to-one match
Powder River CountyFederal rates listed on the county page; no one-to-one match
Prairie CountyFederal rates listed on the county page; no one-to-one match
Richland CountyFederal rates listed on the county page; no one-to-one match
Roosevelt CountyFederal rates listed on the county page; no one-to-one match
Rosebud CountyFederal rates listed on the county page; no one-to-one match
Sheridan CountyFederal rates listed on the county page; no one-to-one match
Stillwater CountyFederal rates listed on the county page; no one-to-one match
Treasure CountyFederal rates listed on the county page; no one-to-one match
Valley CountyFederal rates listed on the county page; no one-to-one match
Wibaux CountyFederal rates listed on the county page; no one-to-one match
Yellowstone CountyFederal rates listed on the county page; no one-to-one match

How the Yellowstone County group compares

The main plumber or pipefitter rate in every county that has one, and how the pay splits here and nearby. All bars use the same scale.

Every county in Montana

$55.64Flathead$66.42Beaverhead
YellowstoneNearby: Big Horn $62.31, Carbon $62.31, Carter $62.31, Custer $62.31, Daniels $62.31, Dawson $62.31, Fallon $62.31, Garfield $62.31, McCone $62.31, Musselshell $62.31, Powder River $62.31, Prairie $62.31, Richland $62.31, Roosevelt $62.31, Rosebud $62.31, Sheridan $62.31, Stillwater $62.31, Treasure $62.31, Valley $62.31, Wibaux $62.31Each column is a group of counties with about the same main rate; its height is how many. 28 counties pay more than Yellowstone, 20 the same, 7 less.

Wage and benefits, nearby

  1. Yellowstone County groupbase $41.00$62.31
  2. Musselshell Countybase $41.00$62.31
  3. Big Horn Countybase $41.00$62.31
  4. Golden Valley Countybase $46.95$66.42

Which county is in which plumber or pipefitter group

Every Montana county with a plumber or pipefitter rate. Counties DLI treats alike share one page; the rest have their own.

CountiesMain classificationBase wageTotal rate
Gallatin County group, 14 localities: Blaine, Cascade, Chouteau, Fergus, Gallatin, Golden Valley, Hill, Judith Basin, Meagher, Park, Petroleum, Phillips, Sweet Grass, WheatlandPLUMBERS, PIPEFITTERS, AND STEAMFITTERS$46.95 $66.42 
Lewis and Clark County group, 14 localities: Beaverhead, Broadwater, Deer Lodge, Glacier, Granite, Jefferson, Lewis and Clark, Liberty, Madison, Pondera, Powell, Silver Bow, Teton, ToolePLUMBERS, PIPEFITTERS, AND STEAMFITTERS$46.95 $66.42 
Yellowstone County group, 21 localities: Big Horn, Carbon, Carter, Custer, Daniels, Dawson, Fallon, Garfield, McCone, Musselshell, Powder River, Prairie, Richland, Roosevelt, Rosebud, Sheridan, Stillwater, Treasure, Valley, Wibaux, YellowstonePLUMBERS, PIPEFITTERS, AND STEAMFITTERS$41.00 $62.31 
Missoula County group, 7 localities: Flathead, Lake, Lincoln, Mineral, Missoula, Ravalli, SandersPLUMBERS, PIPEFITTERS, AND STEAMFITTERS$39.38 $55.64 

4 groups of counties with identical DLI rates, and 0 counties with rates of their own.

Montana plumber or pipefitter prevailing wage by county, with a map

More from DLI on this rate

Every trade's rates, county by county: Big Horn · Carbon · Carter · Custer · Daniels · Dawson · Fallon · Garfield · McCone · Musselshell · Powder River · Prairie · Richland · Roosevelt · Rosebud · Sheridan · Stillwater · Treasure · Valley · Wibaux · Yellowstone

Are you being paid this rate?

Add your base wage to what your employer pays into benefit plans for you (or in cash), and compare it with the total. Contractors post the wages and benefits on site from day one and keep payroll records 3 years (MCA 18-2-422). DLI: (406) 444-6543.

Source

Department of Labor & Industry (DLI), DLI 2026 rates, revised April 25, 2026. For the row this page leads with:

We read every row of DLI's 2026 Building, Heavy and Highway PDFs and check every number with a second, separate reader. DLI prints no total; ours is base plus benefit. How we check · Download every Montana rate as CSV · Report an error