Residents accounted for 81.3% of total arrivals at accommodation establishments in July, while foreigners made up for the reminder 18.7%.
The large majority of foreign visitors (94%) came from Europe, the data showed.
Numbers of Romanian tourists traveling abroad rose 4.9% on the year in July.
In January to July, tourist arrivals increased by 14% on the year, while overnight accommodations were up 9.9%.