Residents accounted for 78.4% of total arrivals at accommodation establishments in 2011, while foreigners made up for the reminder 21.6%.
The vast majority of foreign visitors (94.3%) came from Europe, the data showed.
Romanian tourist departures abroad inched up 0.3% on the year in 2011.
In December alone, tourist arrivals increased by 21.4% on the year, while overnight accommodations were up 16.1%. Romanian tourist departures abroad were down 2.3% compared with December 2010.