Union County is home to 66 named mountains. The highest is Sierra Grande at 2,655 m.
There are 66 named mountains in Union County. The highest and the most prominent mountain is Sierra Grande.

Yes. Union County has 66 named mountains. The highest is Sierra Grande at 2,655 m.
The highest mountain in Union County is Sierra Grande, at 2,655 m.
Union County has 66 named mountains.
