It grew well and slowly displaced ranchland in the southern part of the county, becoming the most important crop.

For many years, the town of Raymondville held an annual Onion Festival, using the tag line, "The Breath of a Nation".

In the early 2010s, wind turbines began to be built in the rural part of the county east of U.S. Highway 77, a number expanded later in 2020.

[5][6][7][8] According to the U.S. Census Bureau, the county has a total area of 784 sq mi (2,030 km2), of which 194 square miles (500 km2) (25%) are covered by water.

As of the 2010 United States Census, 22,134 people, 5,764 households, and 4,607 families were living in the county.

[20] Republican candidate Donald Trump would win the county in the 2024 presidential election.

The only other times the county voted for the Republican candidate were in 1972 with Richard Nixon and Dwight D. Eisenhower's victories in 1952 and 1956.