Last official estimated population of Macon County was 15,605 (year 2014)[1]. This was 0.005% of total US population and 0.3% of total Missouri state population. Area of Macon County is 812.4 mi² (=2104 km²), in this year population density was 19.21 p/mi². If population growth rate would be same as in period 2010-2014 (+0.06%/yr), Macon County population in 2026 would be 15,723 [0].
Historical population of Macon 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] +0.85 %/yr
[1850-1860] +8.13 %/yr
[1860-1870] +4.94 %/yr
[1870-1880] +1.22 %/yr
[1880-1890] +1.55 %/yr
[1890-1900] +0.77 %/yr
[1900-1910] -0.67 %/yr
[1910-1920] -1.14 %/yr
[1920-1930] -1.75 %/yr
[1930-1940] -0.75 %/yr
[1940-1950] -1.53 %/yr
[1950-1960] -1.06 %/yr
[1960-1970] -0.65 %/yr
[1970-1980] +0.56 %/yr
[1980-1990] -0.61 %/yr
[1990-2000] +0.27 %/yr
[2000-2005] -0.21 %/yr
[2005-2010] -0.04 %/yr
[2010-2014] +0.06 %/yr
Looking for settlements in Macon County? Visit this page: Settlements in Macon County, MO
Population of Macon County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 436 | 484 | 920 |
| 5 to 9 | 544 | 539 | 1,083 |
| 10 to 14 | 517 | 503 | 1,020 |
| 15 to 19 | 541 | 426 | 967 |
| 20 to 24 | 415 | 376 | 791 |
| 25 to 29 | 390 | 395 | 785 |
| 30 to 34 | 415 | 439 | 854 |
| 35 to 39 | 418 | 397 | 815 |
| 40 to 44 | 439 | 427 | 866 |
| 45 to 49 | 470 | 463 | 933 |
| 50 to 54 | 549 | 527 | 1,076 |
| 55 to 59 | 524 | 551 | 1,075 |
| 60 to 64 | 505 | 539 | 1,044 |
| 65 to 69 | 476 | 501 | 977 |
| 70 to 74 | 351 | 417 | 768 |
| 75 to 79 | 270 | 321 | 591 |
| 80 to 84 | 182 | 258 | 440 |
| 85+ | 157 | 317 | 474 |
Macon 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 | 7509 | 7771 | 15,280 |
| WAC | 7328 | 7633 | 14,961 |
| NHWAC | 7244 | 7534 | 14,778 |
| WA | 7204 | 7491 | 14,695 |
| NHWA | 7135 | 7415 | 14,550 |
| BAC | 272 | 229 | 501 |
| NHBAC | 262 | 216 | 478 |
| BA | 208 | 152 | 360 |
| NHBA | 204 | 150 | 354 |
| TOM | 131 | 149 | 280 |
| NHTOM | 116 | 123 | 239 |
| H | 90 | 109 | 199 |
| HWAC | 84 | 99 | 183 |
| IAC | 74 | 88 | 162 |
| HWA | 69 | 76 | 145 |
| NHIAC | 66 | 70 | 136 |
| AAC | 47 | 69 | 116 |
| NHAAC | 45 | 66 | 111 |
| AA | 33 | 52 | 85 |
| NHAA | 33 | 51 | 84 |
| IA | 19 | 30 | 49 |
| NHIA | 17 | 26 | 43 |
| HTOM | 15 | 26 | 41 |
| NAC | 15 | 14 | 29 |
| HIAC | 8 | 18 | 26 |
| NHNAC | 14 | 10 | 24 |
| HBAC | 10 | 13 | 23 |
| NA | 4 | 6 | 10 |
| NHNA | 4 | 6 | 10 |
| HBA | 4 | 2 | 6 |
| HIA | 2 | 4 | 6 |
| HAAC | 2 | 3 | 5 |
| HNAC | 1 | 4 | 5 |
| HAA | 0 | 1 | 1 |
| HNA | 0 | 0 | 0 |
• Adair County population
25 mi,
355°
• Randolph County
27.2 mi,
171°
• Linn County
28.9 mi,
274°
• Lewis County
47.6 mi,
68°
• Monroe County
37.5 mi,
127°
• Chariton County
30.2 mi,
224°
• Sullivan County
39 mi,
312°
• Shelby County
25.3 mi,
95°
• Schuyler County
44.3 mi,
3°
• Knox County
30.6 mi,
46°
[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
*Randolph, Chariton Missouri Notes
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