Lewis & Short

pŏpŭlārĭtas, ātis, f. [popularis].

  1. * I. (Acc. to popularis, II. A.) A being of the same country, fellow-citizenship: popularitatis causa, Plaut. Poen. 5, 2, 81.
  2. II. (Acc. to popularis, II. B.) Popularity, but only subjectively, an effort to please the people, a courting of popular favor, popular bearing (post-Aug.): ne quid popularitatis praetermitteret, Suet. Tit. 8; id. Calig. 15; id. Ner. 53: quanto rarior apud Tiberium popularitas, tanto, etc., Tac. A. 3, 69: gratus popularitate, Stat. S. 2, 7, 69.
  3. III. Transf., the population, inhabitants (late Lat.), Tert. Anim. 30; id. adv. Marc. 1, 10.