The blue whale (Balaenoptera musculus) is a marine mammal belonging to the baleen whales . At up to 29.9 metres (98 ft) in length and with a maximum recorded weight of 173 tonnes (190 short tons) and probably reaching over 181 tonnes (200 short tons), it is the largest animal known to have ever existed.
According to the United States Census Bureau, the city has a total area of 5.1 square miles (13.1 kmÂ²), of which 5.0 square miles (13.1 kmÂ²) is land and 0.20% is water. Donna is bordered on the east by Weslaco, Texas and on the west by Alamo. The southern boundary of the town is a few miles north of the Rio Grande, the international border between the United States and Mexico. It is 225 miles (362 km) south of San Antonio, Texas.
Comparing percent of population who was born in another country to the United States average of 13.2%, Donna measures 71.8% larger. Also, measured against the state of Texas, percent of population who was born in another country of 16.6%, Donna is 36.6% larger. Figure 39 shows the age break down of non citizens. Donna has the largest proportion of percent of non citizens under 18 years old at 11% of the total and is ranked #1.