Concrete slab cost in Montana

Concrete slab cost by metro in Montana

1 of the 3 metros sit above the statewide midpoint of $3,850, and the top-to-bottom gap is 4%. Each row prices the default size with that metro's own BLS wages and BEA price levels, so the gap between rows is real local variation rather than a flat markup.

Wages behind the Montana number

Montana's labor line is priced from 4 trades, each compared with its US median wage. After weighting by each trade's share of the work, the state comes out at 1.06 times the national level.

Cement masons and concrete finishers (47-2051), 50% of the weighting: a median of $29.63 an hour, 8% above the US median of $27.41. The middle half of them earn between $26.07 and $31.20 an hour. About 780 work in the state. That is 15.2 per 10,000 jobs, compared with 13.3 nationally, so the supply of crews looks typical.

For construction laborers (47-2061, weighted 30%) the local median is $23.96 an hour, which is 6% above the national $22.66. The middle half of them earn between $20.80 and $28.24 an hour. BLS counts 4,590 of them working in the state, 89.7 for every 10,000 jobs (US: 70.5), so the local bench is deeper than average.

Operating engineers and other construction equipment operators (47-2073), 10% of the weighting: a median of $29.61 an hour, in line with the US median of $28.78. The middle half of them earn between $27.07 and $34.68 an hour. About 3,750 work in the state. That is 73.3 per 10,000 jobs, compared with 30.7 nationally, which suggests plenty of local crews to bid.

Carpenters (47-2031), 10% of the weighting: a median of $28.28 an hour, in line with the US median of $29.12. The middle half of them earn between $23.84 and $32.47 an hour. About 4,030 work in the state. That is 78.8 per 10,000 jobs, compared with 43.1 nationally, which suggests plenty of local crews to bid.

A crew paid at the 75th percentile for cement masons and concrete finishers ($31.20 an hour) would add about $45 to the statewide midpoint; one at the 25th percentile ($26.07) would take off about $100. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.

BLS counts 511,580 jobs across Montana (May 2025), which is 0.3% of US employment.

Optional extras in Montana

Add-ons start from national price ranges and are scaled by 1.01 for Montana, which is the average of the area's wage index (1.06) and goods price index (0.96). The estimator above can add them to your total.

Why two Montana quotes can differ

• Thickness and mix

  A 4-inch slab uses about 1.23 cubic yards of concrete per 100 sq ft; a 6-inch slab uses about 1.85. Stepping up from a 3,000 PSI to a 4,000-4,500 PSI mix adds $10-$40 per cubic yard (Estimators.us).

• Base and reinforcement

  A compacted gravel base, vapor barrier, and wire mesh or rebar are priced separately by some contractors and bundled by others. Ask which one your quote does.

• Truck and pump access

  If the mixer truck can't back up to the forms, someone has to wheelbarrow it in or hire a pump. Pump or line-pump hire is typically billed per day.

• Small-job minimums

  Many crews have a minimum charge, so a 10x10 pad can cost more per square foot than a 20x20 slab.

• Finish

  A broom finish is the baseline. Stamped, stained, or exposed-aggregate finishes are priced as add-ons on top of the slab.

If you are planning more than one job in Montana

Each project weights the trades differently, so Montana's wage level does not push every price by the same amount. Compared with the US midpoint, concrete driveway is +3% and asphalt driveway −1%.

Montana seasons and concrete slab

Weather decides when pouring concrete can happen, and Montana is not uniform. The table uses NOAA's 1991-2020 climate normals from the weather station nearest each metro we cover, and counts the months that are neither cold nor hot enough to complicate the job.

Billings has the longest comfortable season of the metros we cover in Montana at 5 months (May through September); Missoula has the shortest at 4 (June through September). Rainfall runs from 14 inches a year in Missoula to 20 inches in Bozeman.

We do not adjust prices by month, because we have no reliable published data on seasonal pricing. Timing is still worth raising when you collect bids.

Montana versus the states around it

Montana ranks 22 of 51 (the 50 states plus DC) for concrete slab, where 1 is the most expensive. The costliest is Hawaii at $5,150 and the cheapest Arkansas at $3,350, both for 400 sq ft at the midpoint. Montana sits at $3,850. The five states closest by workforce center are listed below.

Basic, standard or premium: Montana prices

Bands overlap on purpose, since a good standard job can cost as much as a light premium one. Below are the three bands for the default size, then a grid from 10x10 pad (100 sq ft) to 30x40 foundation (1,200 sq ft).