Trarza () is a region in southwest Mauritania. Its capital is Rosso. Other major cities and towns include Mederdra and Boutilimit. Trarza borders the regions of Inchiri and Adrar to the north, Brakna to the east, and the country of Senegal to the south. Its western coastline on the Atlantic Ocean is interrupted only by the Mauritanian capital Nouakchott, which the region completely surrounds. In 2013, the population of the region was 272,773, compared to 345,076 in 2011. There were 47.79 per cent females and 52.21 per cent males. In 2008, the activity rate was 42.60 and economic dependency ratio was 0.99. The literacy rate for people aged 15 years and over was 79.0 per cent. Demographics In 2013, the population of the region was 272,773, compared to 345,076 in 2011. There were 47.79 per cent females and 52.21 per cent males. In 2008, the Couples with children was 35.10 and Couples without children was 3.70. The proportion with extended family was 18.30 per cent and extended single-parent was 8.40 per cent, one-person was 3.90 per cent, and single-parent nuclear was 30.60 per cent. The rate of household confirming the existence of public telephone in their neighbourhood or village was 94.21, the rate of households benefiting from electricity post in their neighbourhood was 2.74 per cent, the rate of households benefiting from health centre or health post in their neighbourhood was 8.11 per cent, and the rate of households benefiting from sanitary services was 4.78 per cent. Economy In 2008, the activity rate was 42.60 and economic dependency ratio was 0.99. The fraction of people working in government was 10.70 per cent, individual/household private was 20.80 per cent, other was 53.50 per cent, para-public was 0.70 per cent, and private enterprise was 14.40 per cent. The grand total was 690.09. In 2013, the coverage rate of DPT3 Children From 0 to 11 Months in the region was 59.80 per cent, BGC vaccination was 60.90 and polio vaccination coverage was 59.40. In 2007, the number of tourist establishments in the region was 12. In 2008, the literacy rate for people aged 15 years and over was 79.00. The net enrolment ratio of girls for secondary level was 9.80 per centand boys 13.60 per cent. Total net enrolment ratio at secondary level was 11.50 per cent. Geography Trarza borders the regions of Inchiri and Adrar to the north, Brakna to the east,