[4] The former municipalities that now make up Schwarzenburg have a total combined area of 44.8 km2 (17.30 sq mi).

[7] Most of the population (as of 2000[update]) speaks German (96%) as their first language, French is the second most common (0.8%) and Italian is the third (0.4%).

[8] The historical population is given in the following chart:[9] Schwarzenburg is the terminal station of the Bern-Schwarzenburg-Bahn, which opened in 1907 and today forms part of the BLS AG.

The farm house Aeckenmatt at Aeckenmatt 6, the ruins of Grasburg Castle, the Frühmesskapelle at Käppeligässli 5, the Rossgrabenbrücke (bridge, shared with Rüeggisberg), Schwarzenburg Castle and the granary at Henzischwand 298 A are all listed as Swiss heritage sites of national significance.

[10] The entire village of Schwarzenburg and the hamlets of Äckenmatt and Elisried are designated as part of the Inventory of Swiss Heritage Sites.

[15] In 2000 about 79.6% of the population belonged to a Protestant church, 8.6% were Roman Catholic and 5.5% had no religious affiliation.

[7] Schwarzenburg, along with Thun, is the area where most of the Amish and ethnic Mennonites in the United States trace their ancestry from.

The wettest month was May during which time Schwarzenburg received an average of 154 mm (6.1 in) of rain or snow.