From the Wikipedia page 
Morogoro Region is one of Tanzania's 31 administrative regions. The regional capital is the municipality of Morogoro. According to the 2012 national census, the region had a population of 2,218,492, which was higher than the pre-census projection of 2,209,072. For 2002-2012, the region's 2.4 percent average annual population growth rate was tied for the fourteenth highest in the country. It was also the 22nd most densely populated region with 31 people per square kilometre.