This statistic shows the biggest cities in Syria by number of inhabitants before the start of the civil war. In 2004, when these figures were reported, approximately 4.8 million people lived in Aleppo, making it the biggest city in Syria.

Syria SY: Population in Largest City data was reported at 2,286,820.000 Person in 2017. This records an increase from the previous number of 2,254,557.000 Person for 2016. Syria SY: Population in Largest City data is updated yearly, averaging 1,646,222.500 Person from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 3,078,498.000 Person in 2010 and a record low of 580,464.000 Person in 1960. Syria SY: Population in Largest City data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Syrian Arab Republic – Table SY.World Bank.WDI: Population and Urbanization Statistics. Population in largest city is the urban population living in the country's largest metropolitan area.; ; United Nations, World Urbanization Prospects.; ;

As of April 21, 2022, the Turkish city with the highest Syrian refugee population was Istanbul, with over half a million. Gaziantep, Hatay, and Şanlıurfa were the cities hosting over 400 thousand Syrian refugees. Additionally, the city with the highest rate of Syrians compared to the local population was Kilis, with 42.4 percent.

Graph and download economic data for Geographical Outreach: Number of Branches in 3 Largest Cities, Excluding Headquarters, for Commercial Banks for Syrian Arab Republic (SYRFCBODCLNUM) from 2004 to 2010 about Syria, branches, banks, and depository institutions.

Based on a collection of estimates, over the past 9,000 years, there have been at least 48 cities with a claim to the title of "the world's most populous city". While these can be found on four separate continents, the majority are concentrated in three major regions; 12 of these cities were in present-day Iraq or Syria (then-Mesopotamia), nine were in China, and seven in Egypt. Additionally, many of these cities were found across the Mediterranean, not only during Antiquity (Alexandria, Carthage, and Rome), but also during the Middle Ages (Constantinople, Cordova, and Fez), highlighting the economic significance of this region throughout history.

Many of the older entries in this list are now just archeological sites, although several have been continuously inhabited for millennia, such as Luoyang and Xi'an in China, which both have populations of several million in 2022. It may also be possible that the first entry, Jericho, is the world's oldest, continuously inhabited settlement, although this is a topic of debate.

SY：最大城市人口在12-01-2017达2,286,820.000人，相较于12-01-2016的2,254,557.000人有所增长。SY：最大城市人口数据按年更新，12-01-1960至12-01-2017期间平均值为1,646,222.500人，共58份观测结果。该数据的历史最高值出现于12-01-2010，达3,078,498.000人，而历史最低值则出现于12-01-1960，为580,464.000人。CEIC提供的SY：最大城市人口数据处于定期更新的状态，数据来源于World Bank，数据归类于全球数据库的阿拉伯叙利亚共和国 – 表 SY.世行.WDI：人口和城市化进程统计。