San Ramón is situated onat an elevation of 770 m above sea level.
It lies at the confluence of Río Oxabamba and Río Tulumayo which form Río Chanchamayo downstream and Río Perené later. West of the city we find the Toro Huajrashga Mountain. The nearest town downstream is La Merced, the province's capital, at a distance of less than 10 km (6.2 miles).
The city has a population of circa 7,500 inhabitants.