Last official estimated population of Macoupin County was 47,784 (year 2014)[1]. This was 0.015% of total US population and 0.4% of total Illinois state population. Area of Macoupin County is 867.7 mi² (=2247.2 km²), in this year population density was 55.07 p/mi². If population growth rate would be same as in period 2010-2014 (+0.01%/yr), Macoupin County population in 2026 would be 47,841 [0].
Historical population of Macoupin 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] +14.67 %/yr
[1840-1850] +4.67 %/yr
[1850-1860] +7.13 %/yr
[1860-1870] +2.89 %/yr
[1870-1880] +1.42 %/yr
[1880-1890] +0.69 %/yr
[1890-1900] +0.46 %/yr
[1900-1910] +1.84 %/yr
[1910-1920] +1.23 %/yr
[1920-1930] -1.61 %/yr
[1930-1940] -0.5 %/yr
[1940-1950] -0.46 %/yr
[1950-1960] -0.16 %/yr
[1960-1970] +0.23 %/yr
[1970-1980] +1.03 %/yr
[1980-1990] -0.35 %/yr
[1990-2000] +0.28 %/yr
[2000-2005] -0.24 %/yr
[2005-2010] -0.27 %/yr
[2010-2014] +0.01 %/yr
Looking for settlements in Macoupin County? Visit this page: Settlements in Macoupin County, IL
Population of Macoupin County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1263 | 1093 | 2,356 |
| 5 to 9 | 1511 | 1328 | 2,839 |
| 10 to 14 | 1545 | 1426 | 2,971 |
| 15 to 19 | 1527 | 1396 | 2,923 |
| 20 to 24 | 1365 | 1331 | 2,696 |
| 25 to 29 | 1219 | 1214 | 2,433 |
| 30 to 34 | 1336 | 1357 | 2,693 |
| 35 to 39 | 1298 | 1344 | 2,642 |
| 40 to 44 | 1431 | 1398 | 2,829 |
| 45 to 49 | 1458 | 1500 | 2,958 |
| 50 to 54 | 1752 | 1825 | 3,577 |
| 55 to 59 | 1830 | 1797 | 3,627 |
| 60 to 64 | 1601 | 1607 | 3,208 |
| 65 to 69 | 1271 | 1375 | 2,646 |
| 70 to 74 | 991 | 1070 | 2,061 |
| 75 to 79 | 670 | 850 | 1,520 |
| 80 to 84 | 476 | 719 | 1,195 |
| 85+ | 426 | 853 | 1,279 |
Macoupin 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 | 22757 | 23218 | 45,975 |
| WAC | 22579 | 23010 | 45,589 |
| NHWAC | 22387 | 22777 | 45,164 |
| WA | 22350 | 22780 | 45,130 |
| NHWA | 22166 | 22558 | 44,724 |
| BAC | 343 | 366 | 709 |
| NHBAC | 336 | 356 | 692 |
| BA | 243 | 266 | 509 |
| NHBA | 240 | 259 | 499 |
| TOM | 239 | 240 | 479 |
| H | 213 | 265 | 478 |
| NHTOM | 229 | 228 | 457 |
| HWAC | 192 | 233 | 425 |
| HWA | 184 | 222 | 406 |
| IAC | 171 | 184 | 355 |
| NHIAC | 151 | 162 | 313 |
| AAC | 108 | 164 | 272 |
| NHAAC | 106 | 149 | 255 |
| AA | 67 | 116 | 183 |
| NHAA | 66 | 105 | 171 |
| IA | 63 | 78 | 141 |
| NHIA | 51 | 65 | 116 |
| HIAC | 20 | 22 | 42 |
| NAC | 14 | 11 | 25 |
| HIA | 12 | 13 | 25 |
| HTOM | 10 | 12 | 22 |
| NHNAC | 10 | 10 | 20 |
| HBAC | 7 | 10 | 17 |
| HAAC | 2 | 15 | 17 |
| HAA | 1 | 11 | 12 |
| NA | 8 | 3 | 11 |
| HBA | 3 | 7 | 10 |
| NHNA | 5 | 3 | 8 |
| HNAC | 4 | 1 | 5 |
| HNA | 3 | 0 | 3 |
• Madison County population
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34.6 mi,
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39.6 mi,
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24.1 mi,
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26.6 mi,
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[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
*Madison Illinois Notes
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