Nestled in the Bezirk Sissach, the municipality of Thürnen sits at an altitude of 393 meters above sea level, covering a total surface area of 226 hectares. Figure 1 shows the municipality on the map, and Table 2 summarizes its key features.

Thürnen's history stretches back over nine centuries, with its first documented mention as Durnum in 1101. The community is located southeast of Sissach along the Homburgerbach river, near the foot of the Unteren Hauenstein mountain, and shares borders with several neighboring municipalities. A more detailed summary is available on its Wikipedia page.

As of 2025, Thürnen is home to 1,493 residents, ranking it 42nd in population size within the canton. The population consists of 74.9% Swiss citizens and 24.0% foreign nationals. The age structure shows a balanced distribution, with 14.9% of the population aged 0-17, 63.4% in the working-age group of 18-65, and 21.6% aged over 65. The gender ratio is nearly even, with 792 men and 701 women. Table 2 shows the population by age groups since 2005.

The land use in Thürnen is predominantly agricultural, with 55.9% of its 226-hectare surface dedicated to farming. Forest covers 25.3% of the area, while settlement area accounts for 18.8%.

In terms of municipal finances, Thürnen's tax revenue ranks 42nd in the canton. The specific tax multiplier and its corresponding rank among the 86 municipalities are not detailed in the provided data.

Energy consumption in Thürnen for 2022 was led by heating oil at 10,170 MWh, followed by electricity at 5,487 MWh and ambient heat at 2,632 MWh. Electricity is a good energy carrier for comparison, since it is used in all communities, while others, such as natural gas, depend on the presence of a network. With a per capita electricity consumption of 3.8 MWh, Thürnen ranks 41st in the canton, placing it in the middle range. Very low or very high per capita consumption can be caused by the presence or absence of industrial activity, leading to higher electricity consumption.

The municipality's vehicle stock in 2026 consisted of 863 passenger cars and delivery vans. Of these, 733 were powered by combustion engines, while 130 were electric vehicles, resulting in an electric vehicle share of 15.1%. This data is presented in Table 3.

Waste recycling data for 2024 shows that Thürnen recycled 95 kg of green waste per capita, ranking 41st in the canton for this category. Other recycled materials per capita included 105 kg of household and bulky waste (rank 74), 16 kg of paper and cardboard (rank 59), 14 kg of glass (rank 75), and 1 kg each of other metals (rank 39) and tinplate and aluminum (rank 52). No waste oils were recorded. With no categories ranked in the top 10, the municipality's overall recycling performance is in the middle range compared to other municipalities in the canton. Table 4 provides a full overview of total recycled waste, recycled waste per capita, and canton-wide comparison values.