What is "laddonia"

Population (2000): 620
Housing Units (2000): 278
Land area (2000): 0.551725 sq. miles (1.428960 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 0.551725 sq. miles (1.428960 sq. km)
FIPS code: 39602
Located within: Missouri (MO), FIPS 29
Location: 39.240331 N, 91.643501 W
ZIP Codes (1990): 63352
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords: