The area was served by water transport through the Danube port — Ust-Dunaisk and the checkpoints Kiliia and Vylkove.

In the Danube Delta in the extreme southwest of the raion, the city of Vylkove was located, known as Ukrainian Venice, thanks to numerous Jericam channels, gun along the streets.

In the east, the territory of the raion was limited by the waters of the Black Sea, the seacoast of which reaches a length of almost 60 km.

Winter is mild, short and light snow with frequent thaws, lasts from mid-November to late March (4.5 months), the average temperature is +0.8 °C.

Summer is long, warm, rarely hot, but with insufficient humidity, lasts from mid-May to late September (4.5 months), average temperature +20.8 °C.

The average duration of daylight, which particularly affects the process of photoperiodic of living organisms, is 11 hours 46 minutes.

The territory of Kiliia raion lies on the south-western edge of the Eastern European plain within the Black Sea lowlands and borders the Danube River, due to which some parts of it differ markedly in their natural conditions.

The location on the Eastern European platform minimizes the manifestations of such natural phenomena like earthquakes and volcanism.

The most common are solid non-metallic minerals of local importance — sand, loam, gravel, limestone, pebbles, marl, which are used as building materials.

The raion has large reserves of surface water belonging to the Danube and Northern Black Sea basins.

The river is of great economic importance in irrigation, shipping, and in providing drinking water to the inhabitants of the region.

In the east, the raion is washed by the Black Sea, on the shores of which are the Primorye resort and entertainment zone and Vilkivsky recreational complex of green tourism.

The range of leading families consists of aster, cereals, legumes, sedges, crucifers, quince, carnations, labiate, buckwheat, umbrella, buttercups, rough-leaved, etc.

The number and biomass of planktonic algae are highest in the surface layer of water, reaching several tens of millions of cells per liter in summer.

There are colorful foot-and-mouth disease, Crimean lizards, water snakes, common and eastern steppe vipers.

Of particular interest is the only representative of pinnies in the Black Sea — the monk seal, some individuals of which until the ‘80s were observed in the Ukrainian part of the Danube Delta in the reserve.

Among the amphibians - the inhabitants of freshwater: introduced muskrats and raccoons, as well as rare Red Book — ermine, river otter, European mink.

Later, the Polovtsians migrated here, which was replaced in the 13th century by the Mongol-Tatar hordes, whose rule led to the gradual transformation of the Northern Black Sea Coast into the so-called Wild Field.

From the disintegrating Golden Horde, the Crimean Khanate emerged, whose rulers controlled the territory between the Dniester and the Southern Bug.

The Transnistria part, then called Budzhak, came under the rule of the Moldavian principality, which gradually became under the control of the Ottoman Empire from the middle of the 15th century.

At the beginning of the XIX century, vast areas of the former Wild Field began to be gradually inhabited by immigrants (mostly runaway peasants) from the Commonwealth, the Russian Empire and Moldova.

In 1918–1920, the territory of the raion underwent foreign military intervention and was occupied by the Kingdom of Romania (1918), of which it was a part until 1940.

Karamahmet - in honor of the last Ottoman commander of the Kiliia fortress, Kara Mahmet, who owned the lands of the modern village of Shevchenkove.

Colony Yenikioy took the name of the previous small Tatar settlement in the same place (literally sounds like `New Village`).

Many words remain from the Moldavian-Romanian domination in the vernacular — papushoya (corn), chapa (onion), ashak (donkey), brine (ear sauce), lamp, etc.

The Ukrainian language of the Kiliia region underwent some changes under the influence of Russia, as a result of which the Southern Bessarabian dialect was formed.

The Tatars and Turks preserved the geographical names of small rivers and lakes (China), settlements (Karamakhmet, Galilee), in the city.

During 2014, during an anti-terrorist operation in the east of Ukraine, the victims of the territorial expansion of the Russian Federation and the liquidation of terrorist organizations became three inhabitants of the Kiliia raion.

[17] Kiliia Raion, within its boundaries at that time, had 59,837 inhabitants in 2001, including 36.09% Ukrainian-speakers, 12.81% Romanian-speakers, 44.23% Russian-speakers, 2.52% Bulgarian-speaking and 3.69% Gagauz-speaking.

The share of the raion in the total volume of gross agricultural output in the region exceeds 5.3%, grain — 7.5%, sunflower — 8.1%, grapes — 45.5%, meat — 4.5%, milk — 4.8%, eggs — 6.3%.