'Yankton' definitions:

Yankton, SD -- U.S. city in South Dakota

From: Gazetteer 2000
Name :
Yankton, SD -- U.S. city in South Dakota
Population (2000) :
13528
Housing Units (2000) :
5735
Land area (2000) :
7.760428 sq. miles (20.099415 sq. km)
Water area (2000) :
0.242141 sq. miles (0.627141 sq. km)
Total area (2000) :
8.002569 sq. miles (20.726556 sq. km)
FIPS code :
73060
Located within :
South Dakota (SD), FIPS 46
Location :
42.881647 N, 97.392485 W
ZIP Codes (1990) :
57078
Note :
some ZIP codes may be omitted esp. for suburbs.

Yankton -- U.S. County in South Dakota

From: Gazetteer 2000
Name :
Yankton -- U.S. County in South Dakota
Population (2000) :
21652
Housing Units (2000) :
8840
Land area (2000) :
521.550858 sq. miles (1350.810463 sq. km)
Water area (2000) :
11.065421 sq. miles (28.659307 sq. km)
Total area (2000) :
532.616279 sq. miles (1379.469770 sq. km)
Located within :
South Dakota (SD), FIPS 46
Location :
42.960419 N, 97.385342 W