Last official estimated population of McLean County was 169,843 (year 2014)[1]. This was 0.053% of total US population and 1.3% of total Illinois state population. Area of McLean County is 1,186.3 mi² (=3072.4 km²), in this year population density was 143.17 p/mi². If population growth rate would be same as in period 2010-2014 (+0.04%/yr), McLean County population in 2024 would be 170,522 [0].
Historical population of McLean County for period 1840-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position
[1840-1850] +4.47 %/yr
[1850-1860] +10.97 %/yr
[1860-1870] +6.5 %/yr
[1870-1880] +1.08 %/yr
[1880-1890] +0.48 %/yr
[1890-1900] +0.74 %/yr
[1900-1910] +0.02 %/yr
[1910-1920] +0.3 %/yr
[1920-1930] +0.42 %/yr
[1930-1940] +0.11 %/yr
[1940-1950] +0.35 %/yr
[1950-1960] +0.91 %/yr
[1960-1970] +2.21 %/yr
[1970-1980] +1.33 %/yr
[1980-1990] +0.81 %/yr
[1990-2000] +1.53 %/yr
[2000-2005] +1.29 %/yr
[2005-2010] +1.13 %/yr
[2010-2014] +0.04 %/yr
Looking for settlements in McLean County? Visit this page: Settlements in McLean County, IL
Population of McLean County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 5445 | 5207 | 10,652 |
| 5 to 9 | 5466 | 5322 | 10,788 |
| 10 to 14 | 5492 | 5318 | 10,810 |
| 15 to 19 | 6966 | 7847 | 14,813 |
| 20 to 24 | 11279 | 11812 | 23,091 |
| 25 to 29 | 5424 | 5456 | 10,880 |
| 30 to 34 | 5780 | 5775 | 11,555 |
| 35 to 39 | 5458 | 5446 | 10,904 |
| 40 to 44 | 5228 | 4994 | 10,222 |
| 45 to 49 | 4951 | 5209 | 10,160 |
| 50 to 54 | 5477 | 5744 | 11,221 |
| 55 to 59 | 4958 | 5390 | 10,348 |
| 60 to 64 | 4094 | 4601 | 8,695 |
| 65 to 69 | 3236 | 3335 | 6,571 |
| 70 to 74 | 2055 | 2456 | 4,511 |
| 75 to 79 | 1502 | 1850 | 3,352 |
| 80 to 84 | 974 | 1510 | 2,484 |
| 85+ | 995 | 2009 | 3,004 |
McLean County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
| Race | Male | Female | Total |
| NH | 80493 | 85279 | 165,772 |
| WAC | 73036 | 77650 | 150,686 |
| WA | 71245 | 75747 | 146,992 |
| NHWAC | 69174 | 74007 | 143,181 |
| NHWA | 67576 | 72274 | 139,850 |
| BAC | 7735 | 8025 | 15,760 |
| NHBAC | 7405 | 7725 | 15,130 |
| BA | 6622 | 6805 | 13,427 |
| NHBA | 6409 | 6617 | 13,026 |
| AAC | 5269 | 4988 | 10,257 |
| NHAAC | 5163 | 4914 | 10,077 |
| AA | 4721 | 4427 | 9,148 |
| NHAA | 4648 | 4377 | 9,025 |
| H | 4287 | 4002 | 8,289 |
| HWAC | 3862 | 3643 | 7,505 |
| HWA | 3669 | 3473 | 7,142 |
| TOM | 1885 | 1994 | 3,879 |
| NHTOM | 1682 | 1815 | 3,497 |
| IAC | 616 | 622 | 1,238 |
| NHIAC | 413 | 453 | 866 |
| HBAC | 330 | 300 | 630 |
| IA | 258 | 275 | 533 |
| HBA | 213 | 188 | 401 |
| HTOM | 203 | 179 | 382 |
| HIAC | 203 | 169 | 372 |
| NHIA | 142 | 177 | 319 |
| HIA | 116 | 98 | 214 |
| NAC | 111 | 95 | 206 |
| HAAC | 106 | 74 | 180 |
| NHNAC | 89 | 70 | 159 |
| HAA | 73 | 50 | 123 |
| NA | 49 | 33 | 82 |
| NHNA | 36 | 19 | 55 |
| HNAC | 22 | 25 | 47 |
| HNA | 13 | 14 | 27 |
• Champaign County population
42 mi, 
125°
• Tazewell County
35.3 mi, 
271°
• Macon County
44.3 mi, 
188°
• Livingston County
31.6 mi, 
28°
• Woodford County
28 mi, 
316°
• Logan County
37.3 mi, 
227°
• Piatt County
36.1 mi, 
158°
• De Witt County
21.8 mi, 187°
• Ford County
33.3 mi, 
77°
• Marshall County
45.3 mi, 324°
[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
*Tazewell Illinois Notes
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