La Paz County: Agriculture is one of the top industries in La Paz County and generates nearly as much revenue as tourism here. The county fair is held each March in Parker. Some of the best known crops in La Paz County include onions, honeydews, cantaloupe and watermelon! Upland cotton is the largest crop, followed by Durum wheat, barley, corn for grain and alfalfa. These crops and others account for $92,634,000 just in this county.