[3] Moody County lies on the east side of South Dakota.

The Big Sioux River flows southerly through the center of the county.

Its terrain consists of rolling hills, devoted to agriculture, with lakes in the western portion.

In terms of ancestry, 39.9% were German, 20.1% were Norwegian, 8.9% were Irish, 6.1% were Dutch, 5.1% were English, and 1.6% were American.

Moody County voters tend to split between the two major political parties.

Between 1960 and 2012, the national election results in Moody County were almost always evenly split.