Cost

Per window, per house, and by material.

Window replacement cost in Missouri for 10 windows

A window replacement in Missouri

$7,300

10 windows · typical range $4,380 – $13,626

Typical total$730 per window	$7,300
Range you should see in bidsthree bids on the same scope normally land inside this	$4,380 – $13,626
Labor portion35% of the job — this is the part that moves by state	$2,555
Material portion65% — bought at national prices	$4,745
Glaziers pay in Missouriabout $27/hr · BLS OEWS May 2025, SOC 47-2121	$55,160/yr
U.S. mean for the same tradeSOC 47-2121	$59,720/yr
Versus the national priceMissouri trade pay runs −7.6% against the U.S. mean	−$200

Notes

Where the number comes from. The national price for a window replacement is $750 per window — replacement window pricing published for 2026, $450–$1,400 per window installed. Labor is about 35% of that. Glaziers in Missouri average $55,160 a year against a U.S. mean of $59,720 — a factor of 0.924 — so the labor half is scaled by that and the material half is not.
What is in the price: the window, removal of the old sash or unit, insulation and air sealing around the frame, interior and exterior trim where disturbed, and disposal.
What is not: rot repair in the opening, structural changes to the size, full-frame replacement where an insert was quoted, and interior painting. These are the lines that turn a $7,300 quote into a $9,124 invoice, so ask about each one before signing.
Why state matters more than people expect. Materials ship at national prices; crews do not move. Missouri sits below the national mean by 7.6%, which lands on 35% of the job and moves the total by $200.
Use this as a bid check, not a quote. It prices an average job in an average condition. Difficult access, the state of what is being replaced, the season, and a crew booked out three months all move the real number, and none of them are in a per-unit average.

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