[5] Agriculture is the major economic activity of Valley County.

[citation needed] As of the 2010 census, there were 7,369 people, 3,198 households, and 1,997 families living in the county.

In terms of ancestry, 33.4% were German, 27.9% were Norwegian, 12.4% were Irish, 10.3% were English, and 6.8% were American.

Valley County voters vote reliably Republican in national elections.

Since 1964, they have selected the Democratic Party candidate only once (1992, due to strong showing by third-party candidate Ross Perot, which split the Republican voters).