Last official estimated population of Carroll County was 9,275 (year 2014)[1]. This was 0.003% of total US population and 0.2% of total Missouri state population. Area of Carroll County is 701.4 mi² (=1816.6 km²), in this year population density was 13.22 p/mi². If population growth rate would be same as in period 2010-2014 (-0.05%/yr), Carroll County population in 2026 would be 9,215 [0].
Historical population of Carroll 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] +8.43 %/yr
[1850-1860] +6.02 %/yr
[1860-1870] +5.98 %/yr
[1870-1880] +2.92 %/yr
[1880-1890] +1.01 %/yr
[1890-1900] +0.27 %/yr
[1900-1910] -1.35 %/yr
[1910-1920] -1.2 %/yr
[1920-1930] -0.27 %/yr
[1930-1940] -1.12 %/yr
[1940-1950] -1.33 %/yr
[1950-1960] -1.18 %/yr
[1960-1970] -0.97 %/yr
[1970-1980] -0.35 %/yr
[1980-1990] -1.2 %/yr
[1990-2000] -0.44 %/yr
[2000-2005] -0.74 %/yr
[2005-2010] -1.28 %/yr
[2010-2014] -0.05 %/yr
Looking for settlements in Carroll County? Visit this page: Settlements in Carroll County, MO
Population of Carroll County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 295 | 265 | 560 |
| 5 to 9 | 266 | 247 | 513 |
| 10 to 14 | 289 | 298 | 587 |
| 15 to 19 | 296 | 304 | 600 |
| 20 to 24 | 272 | 254 | 526 |
| 25 to 29 | 222 | 213 | 435 |
| 30 to 34 | 216 | 230 | 446 |
| 35 to 39 | 246 | 272 | 518 |
| 40 to 44 | 281 | 269 | 550 |
| 45 to 49 | 272 | 284 | 556 |
| 50 to 54 | 346 | 300 | 646 |
| 55 to 59 | 303 | 335 | 638 |
| 60 to 64 | 308 | 296 | 604 |
| 65 to 69 | 277 | 296 | 573 |
| 70 to 74 | 215 | 234 | 449 |
| 75 to 79 | 146 | 172 | 318 |
| 80 to 84 | 114 | 161 | 275 |
| 85+ | 86 | 163 | 249 |
Carroll 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 | 4378 | 4545 | 8,923 |
| WAC | 4298 | 4472 | 8,770 |
| NHWAC | 4232 | 4432 | 8,664 |
| WA | 4226 | 4410 | 8,636 |
| NHWA | 4160 | 4370 | 8,530 |
| BAC | 151 | 128 | 279 |
| NHBAC | 147 | 122 | 269 |
| BA | 102 | 87 | 189 |
| NHBA | 98 | 81 | 179 |
| TOM | 74 | 65 | 139 |
| NHTOM | 74 | 64 | 138 |
| H | 72 | 48 | 120 |
| HWA | 66 | 40 | 106 |
| HWAC | 66 | 40 | 106 |
| IAC | 32 | 31 | 63 |
| AAC | 40 | 21 | 61 |
| NHIAC | 32 | 29 | 61 |
| NHAAC | 38 | 20 | 58 |
| AA | 30 | 14 | 44 |
| NHAA | 28 | 14 | 42 |
| IA | 15 | 12 | 27 |
| NHIA | 15 | 11 | 26 |
| NHNAC | 4 | 7 | 11 |
| NAC | 4 | 7 | 11 |
| HBAC | 4 | 6 | 10 |
| HBA | 4 | 6 | 10 |
| NA | 3 | 5 | 8 |
| NHNA | 3 | 5 | 8 |
| HAAC | 2 | 1 | 3 |
| HAA | 2 | 0 | 2 |
| HIAC | 0 | 2 | 2 |
| HIA | 0 | 1 | 1 |
| HTOM | 0 | 1 | 1 |
| HNAC | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Lafayette County population
29.6 mi,
213°
• Ray County
27.7 mi,
252°
• Saline County
25.6 mi,
141°
• Livingston County
24.4 mi,
353°
• Linn County
36.7 mi,
34°
• Grundy County
47.5 mi,
355°
• Howard County
47.3 mi,
114°
• Caldwell County
30.1 mi,
302°
• Daviess County
44.6 mi,
325°
• Chariton County
29.4 mi,
77°
[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
*Ray Missouri Notes
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