Hidalgo County County was created in 1852 and formed from Cameron County. Hidalgo County was named for Miguel Hidalgo y Costilla, the priest who raised the call for Mexico's independence from Spain. The County Seat is Edinburg. The largest city is McAllen. Reynosa, Mexico is McAllen's sister city.
Read more about Hidalgo County, Texas at the Official Hidalgo County Website, The
Handbook of Texas Online and at Wikipedia.