Interesting numbers, I would guess that we have now about 150'000 as of 2013...
As of the census of 2010, there are 120,883 people and 21,582 households residing in the city. The city has the least poverty incidence among urban centers in the Visayas and Mindanao, according to the 2009 Small Area Estimates (SAE) of Poverty done by the National Statistical Coordination Board (NSCB). It has an average daylight population of 400,000 people. Dumaguete is the most populous city in Negros Oriental, comprising 9.05% of the province's total population.

Population census of Dumaguete
Year Pop. % p.a.
1990 80,262
1995 92,637 2.91%
2000 102,265 2.00%
2007 116,392 1.87%
2010 120,883 1.27%
Source: National Statistics Office

Source: Dumaguete - Wikipedia, the free encyclopedia