Feldbrunnen-St. Niklaus is a municipality in the district of Lebern in the canton of Solothurn in Switzerland.

[3] Feldbrunnen-St. Niklaus has an area, as of 2009[update], of 2.5 square kilometers (0.97 sq mi).

Of the rest of the land, 0.37 km2 (0.14 sq mi) or 14.8% is settled (buildings or roads), 0.05 km2 (12 acres) or 2.0% is either rivers or lakes.

[4] The municipality is located in the Lebern district, in the southern foothills of the Jura Mountains, east of Solothurn.

[8] Most of the population (as of 2000[update]) speaks German (728 or 96.3%), with Italian being second most common (8 or 1.1%) and French being third (6 or 0.8%).

[8] The historical population is given in the following chart:[3][12] Waldegg Castle is listed as a Swiss heritage site of national significance.

The entire Waldegg and Feldbrunnnen-St. Niklaus area is part of the Inventory of Swiss Heritage Sites.

[13] In the 2007 federal election the most popular party was the FDP which received 32.26% of the vote.

In the federal election, a total of 473 votes were cast, and the voter turnout was 67.5%.

[8] There were 394 residents of the municipality who were employed in some capacity, of which females made up 44.2% of the workforce.

In the tertiary sector; 9 or 10.2% were in wholesale or retail sales or the repair of motor vehicles, 1 was in the movement and storage of goods, 14 or 15.9% were in a hotel or restaurant, 11 or 12.5% were in the information industry, 2 or 2.3% were the insurance or financial industry, 23 or 26.1% were technical professionals or scientists and 3 or 3.4% were in health care.

[8] From the 2000 census[update], 319 or 42.2% were Roman Catholic, while 262 or 34.7% belonged to the Swiss Reformed Church.

[9] As of 2000[update], there were 84 students from Feldbrunnen-St. Niklaus who attended schools outside the municipality.