What is a 1974 s quarter worth?

The value of a 1974-S quarter typically ranges from 25 cents to a few dollars, depending on its condition and whether it is a regular circulation coin or a proof coin. Uncirculated or proof versions can be worth more, often between $3 to $10 or higher for well-preserved examples. For an accurate valuation, it's best to consult a coin dealer or reference current numismatic guides.