Residents accounted for 75.3% of total arrivals at accommodation establishments in September, while foreigners made up for the reminder 24.7%.
The large majority of foreign visitors (56.5%) came from Europe, the data showed.
Romanian tourist departures abroad rose 4.6% on the year in September.
In January through September, tourist arrivals increased by 16% on the year, while overnight accommodations were up 12.5%.