Trigg county is in the Pennyrile region of Kentucky. The elevation in the county ranges from 359 to 813 feet above sea level.

It was formed in 1820 from Caldwell and Christian counties. The county seat is Cadiz.

In 2020 the county population was 14,061 in a land area of 441.43 square miles, an average of 31.9 people per square mile.

The equine population was 1,200 in the 2012 Kentucky Equine Survey.

Trigg county is in the Clarksville metro statistical area and the Pennyrile Area Development District.

Trigg county was named to honor Colonel Stephen Trigg, who died at the Battle of Blue Licks in 1782.

The western part of the county is within the Land Between the Lakes National Recreation Area. Lake Barkley State Resort Park is west of Cadiz.

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© 2025 David C. Elbon