(a) Except as otherwise expressly provided, service of summons upon an individual defendant shall be made (1) by leaving a copy of the summons with the defendant personally, (2) by leaving a copy at the defendant's usual place of abode, with some person of the family or a person residing there, of the age of 13 years or upwards, and informing that person of the contents of the summons, provided the officer or other person making service shall also send a copy of the summons in a sealed envelope with postage fully prepaid, addressed to the defendant at his or her usual place of abode, or (3) as provided in Section 1-2-9.2 of the Illinois Municipal Code with respect to violation of an ordinance governing parking or standing of vehicles in cities with a population over 500,000.
The certificate of the officer or affidavit of the person that he or she has sent the copy in pursuance of this Section is evidence that he or she has done so. No employee of a facility licensed under the Nursing Home Care Act, the Specialized Mental Health Rehabilitation Act of 2013, the ID/DD Community Care Act, or the MC/DD Act shall obstruct an officer or other person making service in compliance with this Section. An employee of a gated residential community shall grant entry into the community, including its common areas and common elements, to a process server authorized under Section 2-202 of this Code who is attempting to serve process on a defendant or witness who resides within or is known to be within the community. As used in this Section, "gated residential community" includes a condominium association, housing cooperative, or private community.