How do you say "Which counter is it?" in Japanese?

Quick use

Use どのまどぐちですか (dono madoguchi desu ka) when you know what you need to do, but do not know which counter handles it.

Chunk or pattern

This is a fixed practical question.

Learn the whole line first. At a public office, まどぐち (madoguchi) is the important word.

Core words

• どの: which.
• まどぐち: service counter / window.

Helper words and endings

ですか makes the phrase a polite question.

Practical note

This is more specific than asking only どこですか (doko desu ka). It asks for the correct counter, not just a general location.