Source Data Reference for:

City = Rio de Janeiro
Time = 1850

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Rio de Janeiro	1825	91,000			Tertius Chandler	Four thousand years of urban growth	p489
Rio de Janeiro	1825	91,000			Tertius Chandler	Four thousand years of urban growth	p518
Rio de Janeiro	1828	100,000	passed for the 1st time		Tertius Chandler	Four thousand years of urban growth	p542
Rio de Janeiro	1830	125,000			Brian Mitchell	International historical statistics
Rio de Janeiro	1840	141,000			Brian Mitchell	International historical statistics
Rio de Janeiro	1850	166,000			Tertius Chandler	Four thousand years of urban growth	p536
Rio de Janeiro	1850	166,000			Tertius Chandler	Four thousand years of urban growth	p530
Rio de Janeiro	1850	166,000			Tertius Chandler	Four thousand years of urban growth	p519
Rio de Janeiro	1850	166,000			Tertius Chandler	Four thousand years of urban growth	p490
Rio de Janeiro	1850	166,000			Tertius Chandler	Four thousand years of urban growth	p44
Rio de Janeiro	1861	208,000			Tertius Chandler	Four thousand years of urban growth	p54
Rio de Janeiro	1861	208,000			Tertius Chandler	Four thousand years of urban growth	p540
Rio de Janeiro	1872	275,000			Jan Lahmeyer	http://www.populstat.info/	n/a