Rümlingen is a municipality in the Bezirk Sissach of the canton of Basel-Landschaft. Situated at an altitude of 459 meters above sea level, it covers a total surface area of 228 hectares. Table 2 summarizes the key features of the municipality, and figure 1 shows its location on the map.

The history of Rümlingen dates back to the early Middle Ages with the construction of a St. George's chapel, which was part of the parish of Sissach. The village gained significance in 1501 when it established an independent parish, incorporating nearby villages; the current late Gothic St. George's church originates from this period. Rümlingen joined the Sissach district in 1803, and its coat of arms features St. George slaying a dragon. More details can be found on its Wikipedia page.

As of 2025, Rümlingen has a population of 439 residents. In 2024, 21.67 percent of the population were foreign nationals, with Swiss citizens making up the majority. The age distribution shows 83 children (0-17 years), 278 people of working age (18-65), and 78 older adults (over 65). The population consists of 198 women and 241 men. In terms of total population, Rümlingen ranks 77th among the 86 municipalities in the canton. Table 2 shows the population by age groups since 2005.

The land use in Rümlingen is characterized by a balanced mix: settlement areas account for 10.5 percent of the total surface, agricultural land covers 48.5 percent, and forests make up 40.2 percent, with the remaining 0.9 percent being unproductive surface.

Regarding finances, Rümlingen's tax revenue ranks 78th in the canton. The municipal tax multiplier and its corresponding rank among the 86 municipalities are not specified in the provided data.

In 2022, the municipality's energy consumption was led by heating oil at 2,898.74 MWh, followed by electricity at 2,310.09 MWh. Other sources included wood, photovoltaics, thermal solar energy, and ambient heat. Electricity consumption per capita was 5.2 MWh, ranking Rümlingen 15th in the canton, placing it in the top tier but not the extreme top or bottom 10. This relatively high per capita consumption can sometimes be influenced by industrial activity, though the data does not specify local industry.

The vehicle stock in Rümlingen, as of 2026, consists of 322 passenger cars and delivery vans. Of these, 282 are powered by combustion engines (mainly petrol or diesel), and 40 are electric vehicles, resulting in an electric vehicle share of 12.4 percent. This information is detailed in table 3.

Waste recycling data from 2024 shows strong performance in several categories. Rümlingen recycled 47 kg of glass per capita, ranking 2nd in the canton, and 49 kg of paper and cardboard per capita, ranking 12th. It achieved the top rank for both oils and tinplate/aluminum, with 3 kg per capita each. However, green waste recycling was lower, with 28 kg per capita ranking 79th. With two categories in the top rank and others performing well, Rümlingen is overall among the leading municipalities in recycling performance. Table 4 provides total recycled waste, recycled waste per capita, and canton-wide comparison values.