Lohn-Ammannsegg is a municipality in the district of Wasseramt in the canton of Solothurn in Switzerland.

[4] The Einwohnergemeinden of Lohn and Ammannsegg merged in 1993 to form the new political municipality Lohn-Ammannsegg.

[5] Lohn-Ammannsegg has an area, as of 2009[update], of 4.45 square kilometers (1.72 sq mi).

Of the rest of the land, 1.02 km2 (0.39 sq mi) or 22.9% is settled (buildings or roads), 0.01 km2 (2.5 acres) or 0.2% is either rivers or lakes.

[6] The municipality is located in the Wasseramt district, on the northeasternmost outlet of the Bucheggberg.

The blazon of the municipal coat of arms is Per fess Gules an Oak eradicated Argent and of the last a Hook of the first.

[10] Most of the population (as of 2000[update]) speaks German (2,223 or 95.0%), with Italian being second most common (42 or 1.8%) and French being third (19 or 0.8%).

[9] The age distribution, as of 2000[update], in Lohn-Ammannsegg is; 179 children or 7.7% of the population are between 0 and 6 years old and 375 teenagers or 16.0% are between 7 and 19.

The greatest number of single family homes (120) were built between 1981 and 1990.

[10] The historical population is given in the following chart:[15][16] In the 2007 federal election the most popular party was the FDP which received 32.59% of the vote.

In the federal election, a total of 1,089 votes were cast, and the voter turnout was 57.0%.

[10] There were 1,220 residents of the municipality who were employed in some capacity, of which females made up 43.0% of the workforce.

The number of jobs in the secondary sector was 273 of which 139 or (50.9%) were in manufacturing and 131 (48.0%) were in construction.

In the tertiary sector; 115 or 32.8% were in wholesale or retail sales or the repair of motor vehicles, 11 or 3.1% were in the movement and storage of goods, 20 or 5.7% were in a hotel or restaurant, 41 or 11.7% were in the information industry, 2 or 0.6% were the insurance or financial industry, 17 or 4.8% were technical professionals or scientists, 18 or 5.1% were in education and 87 or 24.8% were in health care.

[10] From the 2000 census[update], 763 or 32.6% were Roman Catholic, while 1,105 or 47.2% belonged to the Swiss Reformed Church.

The education system in the Canton of Solothurn allows young children to attend two years of non-obligatory Kindergarten.

All the lower secondary students from Lohn-Ammannsegg attend their school in a neighboring municipality.