Testing and Measurement in Texas

Today's testing and measurement website hotspot is McCallen, Texas. Situated at the southern tip of Texas, in the Rio Grande valley, McCallen is only the twentieth most populous city in Texas, but is the largest in Hidalgo County, with a population of over 130,000. 

Thanks to its position on the Rio Grande (the border with Mexico), McCallen attracts a lot of tourists, giving it the highest per capita retail spending in Texas.