Umka

Rucka (Serbian Cyrillic: Руцка) is a suburban settlement of Belgrade, the capital of Serbia. It is located in the municipality of Čukarica. Rucka is the southernmost and the least populated settlement in the municipality of Čukarica. It is located just 1.5 km west of Umka, with which it makes a continuous built-up urban area, so in the future much smaller Rucka (population of 316, census 2011) might be annexed to Umka (population of 5,292, Census 2002). Rucka is one of the smallest settlements in the City of Belgrade area, and being classified as an urban, one of the smallest towns in Serbia.

Mala Moštanica is a village located in the municipality of Obrenovac, Belgrade, Serbia. As of 2011 census, it has a population of 1,805 inhabitants.

Pećani (Serbian Cyrillic: Пећани) is an urban settlement of Belgrade, the capital of Serbia. It is located in the municipality of Čukarica. Pećani is located 3 km south of Ostružnica, in central part of the Čukarica municipality. It is the second least populated settlement in the municipality, with a population of 562 as of 2011 census, and despite being small and depopulating (population of 632 in 1991), it is statistically classified as an urban settlement (town). There are two karstic caves near the town, called Donja Pećina and Gornja Pećina ("upper cave" and "lower cave").In July 2023 city announced plans for massive urbanization of the Velika Moštanica-Pećani area, which would triple their combined population to 9,750.

Velika Moštanica (Serbian Cyrillic: Велика Моштаница) is a suburban settlement of Belgrade, Serbia. It is located in the municipality of Čukarica.

Ostružnica (Serbian Cyrillic: Остружница) is a suburban settlement of Belgrade, Serbia, in the municipality of Čukarica. It has a population of 4,218 people (2011).

Barič (Serbian: Барич) is a village located in the municipality of Obrenovac, Belgrade, Serbia. As of 2011 census, it has a population of 6,918 inhabitants.

Ostružnica railway station (Serbian: Железничка станица Остружница) is a railway station of Belgrade railway junction. Located in Ostružnica, Belgrade, Serbia. Railroad continued to Surčin in one, in the other direction to Belgrade marshalling yard "A", in third direction to Belgrade marshalling yard "B", in fourth direction to Jajinci and the fifth direction towards to Resnik. Ostružnica railway station railway station consists of 4 railway tracks.

The Kolubara (Serbian Cyrillic: Колубара, pronounced [kɔlǔbara]) is a 87 km (54 mi) long river in western Serbia; it is an eastern, right tributary to the Sava river. Due to the many long tributaries creating a branchy system within the river's drainage basin, the short Kolubara drains relatively large area of 3,639 km2 (1,405 sq mi). It is part of the larger Black Sea drainage. The river is not navigable, but its valley is very important for transportation. Here are located Belgrade-Valjevo road, parts of Belgrade-Šabac road, Ibarska magistrala (Highway of Ibar) and the Belgrade-Bar railway. The Kolubara was the site of one of the major battles on the Balkans in the World War I, the Battle of Kolubara in 1914. There is a game hunting ground "Kolubara" in the valley of the river, on the territory of the Lazarevac municipality.

The Obrenovac-Surčin Bridge on A2 motorway (Serbian: Мост Обреновац-Сурчин, romanized: Most Obrenovac-Surčin) is the bridge crossing the rivers Kolubara and Sava in the suburban section of Belgrade, the capital of Serbia. It is part of the A2 motorway, in Serbia more often called Corridor XI. Preparatory works on the bridge began on 12 February 2017 and it was ceremonially opened, with the adjoining Obrenovac-Surčin section of the motorway, on 17 December 2019.

Ostružnica Bridge is a six-lane girder bridge carrying the Belgrade bypass over the Sava at Ostružnica.

Železnik (Serbian Cyrillic: Железник, pronounced [ʒě̞le̞zniːk]) is an urban neighborhood of Belgrade, Serbia. It is located in Belgrade's municipality of Čukarica.

Vranić (Serbian Cyrillic: Вранић) is a suburban settlement of Belgrade, Serbia. It is located in the municipality of Barajevo. Vranić is the westernmost settlement in the municipality, located 2 km (1.2 mi) east of the Ibarska magistrala, but as the settlement grew, it reached the highway. Vranić was part of the municipality of Umka which was abolished in 1960 and divided between the municipalities of Čukarica and Barajevo (Vranić and Meljak).