The Collaborative International Dictionary of English v.0.48:

Emmet \Em"met\ ([e^]m"m[e^]t), n. [OE. emete, amete, AS.
   [ae]mete. See Ant.] (Zo["o]l.)
   An ant. [chiefly dialect]
   [1913 Webster]

   Emmet hunter (Zo["o]l.), the wryneck[3], a type of bird
      related to the woodpeckers.
      [1913 Webster]

U.S. Gazetteer (1990):

Emmet, AR (city, FIPS 21610)
  Location: 33.72205 N, 93.46618 W
  Population (1990): 446 (205 housing units)
  Area: 3.9 sq km (land), 0.0 sq km (water)
  Zip code(s): 71835
Emmet, ND
  Zip code(s): 58540
Emmet, NE (village, FIPS 15815)
  Location: 42.47639 N, 98.80986 W
  Population (1990): 70 (33 housing units)
  Area: 0.7 sq km (land), 0.0 sq km (water)
  Zip code(s): 68734