Last official estimated population of Monticello city (Piatt County**, Illinois state) was 5,516 (year 2014)[1]. This was 0.002% of total US population and 0.04% of total Illinois state population. Area of Monticello city is 3.8 mi² (=9.9 km²)[6], in this year population density was 1,436.08 p/mi². If population growth rate would be same as in period 2010-2014 (-0.14%/yr), Monticello city population in 2026 would be 5,421*.
Historical population of Monticello city for period 1850-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1850-1860] +13.47 %/yr
[1860-1870] +4.2 %/yr
[1870-1880] +4.38 %/yr
[1880-1890] +2.08 %/yr
[1890-1900] +1.89 %/yr
[1900-1910] -0.01 %/yr
[1910-1920] +1.42 %/yr
[1920-1930] +0.42 %/yr
[1930-1940] +0.59 %/yr
[1940-1950] +0.35 %/yr
[1950-1960] +2.11 %/yr
[1960-1970] +2.52 %/yr
[1970-1980] +1.41 %/yr
[1980-1990] +0.05 %/yr
[1990-2000] +0.71 %/yr
[2000-2005] +0.93 %/yr
[2005-2010] +0.67 %/yr
[2010-2014] -0.14 %/yr
• Bement village population
7.6 mi, 
179°
• Cerro Gordo village
13.1 mi, 
220°
• Argenta village
13.4 mi, 
255°
• Mansfield village
12.8 mi, 
15°
• Bondville village
12.1 mi, 
63°
• De Land village
7.1 mi, 
329°
• Weldon village
11.1 mi, 
303°
• Sadorus village
13 mi, 
110°
• Ivesdale village
8.7 mi, 
134°
• Cisco village
8 mi, 260°
*Calculated by population.us from last known population growth rate, not official data.
**Some cities are placed on more than one county. Only 1 county is shown.
[1] Cities and Towns (Incorporated Places and Minor Civil Divisions) 2014, archived from the original, retrieved 02/23/2016
[2] City and Town Intercensal Estimates (2000-2010), archived from the original, retrieved 02/23/2016
[3] Places: 1990 and 1999 Populations, With Numeric and Percent Population Change, archived from the original, retrieved 02/23/2016
[4] Population of the 100 Largest Urban Places: 1980,
[5] Population of the 100 Largest Urban Places in history,
[6] Area, latitude longitude data, retrieved 02/23/2016
[7] Through the Decades, Overview 1790-2010, PDF, large files! >100 Mb
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