N.Y. Jud. Law § 190-a

§ 190-a. When domestic or foreign corporation or joint-stock\nassociation deemed resident. For the purpose of determining jurisdiction\nunder section one hundred ninety, a domestic corporation or joint-stock\nassociation is deemed a resident of a county in which its principal\nplace of business is established by or pursuant to a statute or by its\narticles of association, or in which its principal place of business or\nany part of its plant, shops, factories or offices is actually located,\nor in the case of a railroad corporation, in which any portion of the\nroad operated by it is located, and a foreign corporation is to be\ndeemed a resident of a county if it maintains any plant, store, office,\nwarehouse or other facility for doing business within such county; and\npersonal service of a paper by which an action or special proceeding is\ncommenced, made within the county, as prescribed in the civil practice\nlaw and rules, is sufficient service thereof upon a domestic corporation\nwherever it is located.\n