The municipality comprises the village of Oberiberg and the hamlet and ski area of Hoch-Ybrig.

[3] Until the separation, in 1884, into Unteriberg and Oberiberg the independent municipality was known simply as Iberg.

Of the rest of the land, 1.9% is settled (buildings or roads) and the remainder (8.8%) is non-productive (rivers, glaciers or mountains).

Most of the population (as of 2000[update]) speaks German (98.2%), with Portuguese being second most common ( 0.4%) and Albanian being third ( 0.3%).

[4] From the 2000 census[update], 557 or 77.6% are Roman Catholic, while 95 or 13.2% belonged to the Swiss Reformed Church.

The wettest month is July during which time Oberiberg receives an average of 237 mm (9.3 in) of precipitation.

The driest month of the year is October with an average of 115 mm (4.5 in) of precipitation over 15.4 days.