Rule 3110. Where the deposition is to be taken within the state. A deposition within the state on notice shall be taken: 1. when the person to be examined is a party or an officer, director, member or employee of a party, within the county in which he resides or has an office for the regular transaction of business in person or where the action is pending; or 2. when any other person to be examined is a resident, within the county in which he resides, is regularly employed or has an office for the regular transaction of business in person, or if he is not a resident, within the county in which he is served, is regularly employed or has an office for the regular transaction of business in person; or 3. when the party to be examined is a public corporation or any officer, agent or employee thereof, within the county in which the action is pending; the place of such examination shall be the office of any of the attorneys for such a public corporation or any officer, agent or authorized employee thereof unless the parties stipulate otherwise. For the purpose of this rule New York city shall be considered one county.
New York Legal Code