Hubersdorf is a municipality in the district of Lebern in the canton of Solothurn in Switzerland. Hubersdorf is first mentioned in 1374 as Huopolstron. Hubersdorf has an area, , of . Of this area, or 52.9% is used for agricultural purposes, while or 30.9% is forested. Of the rest of the land, or 15.4% is settled (buildings or roads), or 0.7% is either rivers or lakes. Of the built up area, housing and buildings made up 12.5% and transportation infrastructure made up 2.2%. Out of the forested land, 26.5% of the total land area is heavily forested and 4.4% is covered with orchards or small clusters of trees. Of the agricultural land, 30.1% is used for growing crops and 22.8% is pastures. All the water in the municipality is flowing water. The municipality is located in the Lebern district, in a small depression near the Siggern river in the Jura Mountains. The blazon of the municipal coat of arms is Gules in dexter a Mullet pommed Or and in sinister a Paring Knife Sable palewise. Hubersdorf has a population () of . , 6.3% of the population are resident foreign nationals. Over the last 10 years (1999–2009 ) the population has changed at a rate of 3%. Most of the population () speaks German (651 or 98.0%), with French being second most common (4 or 0.6%) and Albanian being third (3 or 0.5%). the gender distribution of the population was 50.3% male and 49.7% female. The population was made up of 323 Swiss men (46.9% of the population) and 23 (3.3%) non-Swiss men. There were 318 Swiss women (46.2%) and 24 (3.5%) non-Swiss women. Of the population in the municipality 198 or about 29.8% were born in Hubersdorf and lived there in 2000. There were 253 or 38.1% who were born in the same canton, while 165 or 24.8% were born somewhere else in Switzerland, and 37 or 5.6% were born outside of Switzerland. In there were 8 live births to Swiss citizens and were 5 deaths of Swiss citizens. Ignoring immigration and emigration, the population of Swiss citizens increased by 3 while the foreign population remained the same.