Last official estimated population of Livingston County was 38,853 (year 2014)[1]. This was 0.012% of total US population and 0.3% of total Illinois state population. Area of Livingston County is 1,045.9 mi² (=2708.9 km²), in this year population density was 37.15 p/mi². If population growth rate would be same as in period 2010-2014 (-0.06%/yr), Livingston County population in 2026 would be 38,563 [0].
Historical population of Livingston 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] +7.42 %/yr
[1850-1860] +22.32 %/yr
[1860-1870] +10.46 %/yr
[1870-1880] +2.02 %/yr
[1880-1890] +0 %/yr
[1890-1900] +0.89 %/yr
[1900-1910] -0.38 %/yr
[1910-1920] -0.35 %/yr
[1920-1930] +0.01 %/yr
[1930-1940] -0.07 %/yr
[1940-1950] -0.27 %/yr
[1950-1960] +0.65 %/yr
[1960-1970] +0.09 %/yr
[1970-1980] +0.17 %/yr
[1980-1990] -0.51 %/yr
[1990-2000] +0.11 %/yr
[2000-2005] -0.34 %/yr
[2005-2010] -0.06 %/yr
[2010-2014] -0.06 %/yr
Looking for settlements in Livingston County? Visit this page: Settlements in Livingston County, IL
Population of Livingston County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1086 | 1039 | 2,125 |
| 5 to 9 | 1126 | 1018 | 2,144 |
| 10 to 14 | 1287 | 1115 | 2,402 |
| 15 to 19 | 1266 | 1098 | 2,364 |
| 20 to 24 | 1283 | 1190 | 2,473 |
| 25 to 29 | 1179 | 1124 | 2,303 |
| 30 to 34 | 1253 | 1136 | 2,389 |
| 35 to 39 | 1171 | 1098 | 2,269 |
| 40 to 44 | 1193 | 1105 | 2,298 |
| 45 to 49 | 1291 | 1211 | 2,502 |
| 50 to 54 | 1470 | 1439 | 2,909 |
| 55 to 59 | 1471 | 1399 | 2,870 |
| 60 to 64 | 1240 | 1178 | 2,418 |
| 65 to 69 | 881 | 947 | 1,828 |
| 70 to 74 | 686 | 803 | 1,489 |
| 75 to 79 | 493 | 643 | 1,136 |
| 80 to 84 | 365 | 532 | 897 |
| 85+ | 363 | 724 | 1,087 |
Livingston 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 | 18116 | 18084 | 36,200 |
| WAC | 17639 | 17768 | 35,407 |
| WA | 17404 | 17551 | 34,955 |
| NHWAC | 16716 | 17104 | 33,820 |
| NHWA | 16525 | 16912 | 33,437 |
| BAC | 1426 | 953 | 2,379 |
| NHBAC | 1369 | 915 | 2,284 |
| BA | 1280 | 822 | 2,102 |
| NHBA | 1246 | 796 | 2,042 |
| H | 988 | 715 | 1,703 |
| HWAC | 923 | 664 | 1,587 |
| HWA | 879 | 639 | 1,518 |
| TOM | 258 | 230 | 488 |
| NHTOM | 210 | 202 | 412 |
| AAC | 158 | 182 | 340 |
| NHAAC | 149 | 173 | 322 |
| IAC | 140 | 115 | 255 |
| AA | 110 | 138 | 248 |
| NHAA | 107 | 134 | 241 |
| NHIAC | 89 | 83 | 172 |
| IA | 49 | 51 | 100 |
| HBAC | 57 | 38 | 95 |
| HIAC | 51 | 32 | 83 |
| HTOM | 48 | 28 | 76 |
| HBA | 34 | 26 | 60 |
| NHIA | 27 | 33 | 60 |
| HIA | 22 | 18 | 40 |
| NAC | 12 | 17 | 29 |
| NHNAC | 8 | 16 | 24 |
| HAAC | 9 | 9 | 18 |
| NA | 3 | 7 | 10 |
| NHNA | 1 | 7 | 8 |
| HAA | 3 | 4 | 7 |
| HNAC | 4 | 1 | 5 |
| HNA | 2 | 0 | 2 |
• McLean County population
31.6 mi,
208°
• Kendall County
48.4 mi,
7°
• LaSalle County
35.5 mi,
330°
• Kankakee County
39.8 mi,
64°
• Grundy County
28.6 mi,
16°
• Woodford County
35.1 mi,
258°
• Iroquois County
38.9 mi,
104°
• Ford County
26.8 mi,
140°
• Marshall County
42.3 mi,
282°
• Putnam County
44.2 mi,
298°
[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, Vermilion Illinois Notes
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