Table 1.

Basic Information of SBA and GBA as of the end of 2020.

	SBA	GBA
Latitude (N)	36°56′–38°47′	21°32′–24°26′
Longitude (E)	121°39′–123°33′	111°20′–115°24′
Contained cities	9 counties	11 cities
Population	7.74 million	86.17 million
Area (km2)	1.8 × 104	5.6 × 104
Population density	427 per/km2	1182 per/km2
Percentage of population size	2.30%	4.80%
Percentage of land area	0.19%	0.59%
GDP(US dollars)	0.99 trillion	1.67 trillion
Percentage of GDP	9.3%	12.5%

Note: Data from HKTDC (2020).