Last official estimated population of Fayette County was 22,116 (year 2014)[1]. This was 0.007% of total US population and 0.2% of total Illinois state population. Area of Fayette County is 725.3 mi² (=1878.6 km²), in this year population density was 30.49 p/mi². If population growth rate would be same as in period 2010-2014 (-0.03%/yr), Fayette County population in 2026 would be 22,044 [0].
Historical population of Fayette County for period 1830-2014 [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

[1830-1840] +8.87 %/yr
[1840-1850] +2.47 %/yr
[1850-1860] +3.32 %/yr
[1860-1870] +5.79 %/yr
[1870-1880] +1.7 %/yr
[1880-1890] +0.05 %/yr
[1890-1900] +1.85 %/yr
[1900-1910] +0 %/yr
[1910-1920] -0.69 %/yr
[1920-1930] -1.08 %/yr
[1930-1940] +2.19 %/yr
[1940-1950] -1.69 %/yr
[1950-1960] -1.13 %/yr
[1960-1970] -0.56 %/yr
[1970-1980] +0.66 %/yr
[1980-1990] -0.59 %/yr
[1990-2000] +0.43 %/yr
[2000-2005] +0.03 %/yr
[2005-2010] +0.27 %/yr
[2010-2014] -0.03 %/yr
Looking for settlements in Fayette County? Visit this page: Settlements in Fayette County, IL
Population of Fayette County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 589 | 548 | 1,137 |
| 5 to 9 | 694 | 653 | 1,347 |
| 10 to 14 | 694 | 681 | 1,375 |
| 15 to 19 | 752 | 628 | 1,380 |
| 20 to 24 | 862 | 583 | 1,445 |
| 25 to 29 | 829 | 591 | 1,420 |
| 30 to 34 | 764 | 615 | 1,379 |
| 35 to 39 | 837 | 540 | 1,377 |
| 40 to 44 | 756 | 622 | 1,378 |
| 45 to 49 | 816 | 623 | 1,439 |
| 50 to 54 | 872 | 767 | 1,639 |
| 55 to 59 | 797 | 728 | 1,525 |
| 60 to 64 | 652 | 647 | 1,299 |
| 65 to 69 | 553 | 558 | 1,111 |
| 70 to 74 | 383 | 482 | 865 |
| 75 to 79 | 330 | 354 | 684 |
| 80 to 84 | 231 | 301 | 532 |
| 85+ | 205 | 333 | 538 |
Fayette 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 | 11371 | 10121 | 21,492 |
| WAC | 10544 | 10144 | 20,688 |
| WA | 10429 | 10041 | 20,470 |
| NHWAC | 10340 | 10018 | 20,358 |
| NHWA | 10233 | 9922 | 20,155 |
| BAC | 1045 | 100 | 1,145 |
| NHBAC | 1018 | 93 | 1,111 |
| BA | 994 | 37 | 1,031 |
| NHBA | 972 | 35 | 1,007 |
| H | 245 | 133 | 378 |
| HWAC | 204 | 126 | 330 |
| HWA | 196 | 119 | 315 |
| TOM | 120 | 110 | 230 |
| NHTOM | 111 | 103 | 214 |
| IAC | 77 | 57 | 134 |
| AAC | 69 | 63 | 132 |
| NHAAC | 64 | 60 | 124 |
| NHIAC | 60 | 52 | 112 |
| AA | 40 | 40 | 80 |
| NHAA | 36 | 38 | 74 |
| IA | 31 | 23 | 54 |
| NHIA | 18 | 20 | 38 |
| HBAC | 27 | 7 | 34 |
| HBA | 22 | 2 | 24 |
| HIAC | 17 | 5 | 22 |
| HIA | 13 | 3 | 16 |
| HTOM | 9 | 7 | 16 |
| NAC | 4 | 5 | 9 |
| HAAC | 5 | 3 | 8 |
| NHNAC | 3 | 4 | 7 |
| HAA | 4 | 2 | 6 |
| NA | 2 | 3 | 5 |
| NHNA | 1 | 3 | 4 |
| HNAC | 1 | 1 | 2 |
| HNA | 1 | 0 | 1 |
• Marion County population
24.9 mi,
167°
• Clinton County
35 mi,
218°
• Christian County
40.1 mi,
339°
• Effingham County
23 mi,
81°
• Montgomery County
29.2 mi,
302°
• Shelby County
29 mi,
23°
• Bond County
23.9 mi,
250°
• Clay County
33.7 mi,
121°
• Cumberland County
45.7 mi,
65°
• Jasper County
46.6 mi,
89°
[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
*Crawford, Bond, Clark Illinois Notes
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