The largest town of the Municipality and the seat of the district and municipality authorities is Sulęcin. Since 1 January 1999 it has been the capital of the Sulęcin District comprising the following Municipalities: Sulęcin, Słońsk, Lubniewice, Krzeszyce and Torzym. The district traditions of Sulęcin go back to 1810.
It was the seat of the district authorities, with a few intervals, until 1975. From the 19th century until World War II the district comprised 81 municipalities and 341 localities. The Sulęcin Municipality borders on eight Municipalities within the Lubuskie Province in which the seats of the Municipality authorities are the following towns: Bledzew, Krzeszyce Lubniewice, Lubrza, Łagów Lubuski, Międzyrzecz, Ośno Lubuskie and Torzym. According to the new administrative division of Poland, the Sulęcin Municipality belongs to the Lubuskie Province (it used to belong to the Gorzowskie Province before).
The town and Municipality of Sulęcin, due to their location, the existing infrastructure and the proximity of the border with Germany, have created good conditions for the development of industry, agriculture, agricultural processing, trade, tourism and recreation. Sulęcin has a well developed transportation network, water supply, sewage disposal and gas supply systems, as well as attractive construction and investment areas. It offers good investment opportunities as well as good conditions for the development of existing businesses. Since 2002 Sulęcin has had access to fast developing gas supply systems. The Municipality has also had many achievements in the field of environmental protection and the development of economic and tourist infrastructure. In Sulęcin and Wędrzyn modern sewage treatment plants have been built, and in Długoszyn - the Municipal Waste Disposal Plant.
In 1993 Sulęcin joined the Association of Polish Towns with its registered office in Poznań. Since 1993 the Sulęcin Municipality has been an active member of the German-Polish PRO EUROPA VIADRINA Euroregion. The Municipality has also been a member of the CZG-12 Special Municipalities Union, and since 2012 together with the Municipalities of Lubniewice, Lubrza and Łagów it has entered the "Lubuskie Pearls" tourist agreement. The town keeps in constant touch with its partner towns: Beeskow, Friedland and Kamen, as well as with the German Oder - Spree District. Apart from the three partner towns in Germany, Sulęcin has also a partner town in Poland. It is Nowy Tomyśl located in Greater Poland.
There are several production plants and service providers, municipality and district administration offices, the Social Insurance Institution, the Farmers' Social Security Fund, the Agency for Restructuring and Modernisation of Agriculture, the District Court of Law, the District Public Prosecutor's Office, the Notary Public's Office, the District Power Supply Company, the District Forest Inspectorate, the Independent Public Health Care Institution, the District Labour Office, the District Police Headquarters, the District Headquarters of the State Fire Service, a Post Office, and many more state and local government institutions in the town.
Sulęcin follows an open economic and promotional policy and guarantees convenient opportunities for commencing business activity. Many entrepreneurs, including foreign ones, have already had a chance to learn about it. The town is open for all kinds of investment initiatives in the Municipality area.