Last official estimated population of Dallas County was 16,731 (year 2014)[1]. This was 0.005% of total US population and 0.3% of total Missouri state population. Area of Dallas County is 542.8 mi² (=1406 km²), in this year population density was 30.82 p/mi². If population growth rate would be same as in period 2010-2014 (-0.07%/yr), Dallas County population in 2026 would be 16,594 [0].
Historical population of Dallas County for period 1850-2014 [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

[1850-1860] +4.91 %/yr
[1860-1870] +3.59 %/yr
[1870-1880] +1 %/yr
[1880-1890] +3.16 %/yr
[1890-1900] +0.95 %/yr
[1900-1910] -0.53 %/yr
[1910-1920] -0.91 %/yr
[1920-1930] -1.32 %/yr
[1930-1940] +0.89 %/yr
[1940-1950] -1.03 %/yr
[1950-1960] -1.09 %/yr
[1960-1970] +0.77 %/yr
[1970-1980] +1.87 %/yr
[1980-1990] +0.45 %/yr
[1990-2000] +2.2 %/yr
[2000-2005] +0.75 %/yr
[2005-2010] +0.55 %/yr
[2010-2014] -0.07 %/yr
Looking for settlements in Dallas County? Visit this page: Settlements in Dallas County, MO
Population of Dallas County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 496 | 448 | 944 |
| 5 to 9 | 594 | 515 | 1,109 |
| 10 to 14 | 569 | 562 | 1,131 |
| 15 to 19 | 531 | 474 | 1,005 |
| 20 to 24 | 413 | 408 | 821 |
| 25 to 29 | 409 | 407 | 816 |
| 30 to 34 | 423 | 410 | 833 |
| 35 to 39 | 414 | 434 | 848 |
| 40 to 44 | 466 | 467 | 933 |
| 45 to 49 | 479 | 521 | 1,000 |
| 50 to 54 | 636 | 640 | 1,276 |
| 55 to 59 | 637 | 659 | 1,296 |
| 60 to 64 | 602 | 565 | 1,167 |
| 65 to 69 | 499 | 504 | 1,003 |
| 70 to 74 | 410 | 415 | 825 |
| 75 to 79 | 279 | 302 | 581 |
| 80 to 84 | 174 | 242 | 416 |
| 85+ | 142 | 243 | 385 |
Dallas 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 |
| WAC | 8043 | 8073 | 16,116 |
| NH | 8018 | 8071 | 16,089 |
| NHWAC | 7902 | 7940 | 15,842 |
| WA | 7912 | 7928 | 15,840 |
| NHWA | 7783 | 7807 | 15,590 |
| IAC | 168 | 180 | 348 |
| NHIAC | 150 | 165 | 315 |
| H | 155 | 145 | 300 |
| TOM | 137 | 150 | 287 |
| HWAC | 141 | 133 | 274 |
| NHTOM | 125 | 138 | 263 |
| HWA | 129 | 121 | 250 |
| IA | 80 | 81 | 161 |
| NHIA | 72 | 72 | 144 |
| BAC | 63 | 57 | 120 |
| NHBAC | 58 | 51 | 109 |
| AAC | 26 | 47 | 73 |
| NHAAC | 25 | 44 | 69 |
| BA | 32 | 18 | 50 |
| NHBA | 28 | 17 | 45 |
| AA | 7 | 29 | 36 |
| NHAA | 7 | 28 | 35 |
| HIAC | 18 | 15 | 33 |
| NAC | 12 | 15 | 27 |
| HTOM | 12 | 12 | 24 |
| NHNAC | 10 | 13 | 23 |
| HIA | 8 | 9 | 17 |
| NA | 5 | 10 | 15 |
| NHNA | 3 | 9 | 12 |
| HBAC | 5 | 6 | 11 |
| HBA | 4 | 1 | 5 |
| HNAC | 2 | 2 | 4 |
| HAAC | 1 | 3 | 4 |
| HNA | 2 | 1 | 3 |
| HAA | 0 | 1 | 1 |
• Greene County population
33.9 mi,
209°
• Pulaski County
46.2 mi,
77°
• Camden County
27.9 mi,
31°
• Webster County
29.1 mi,
162°
• Laclede County
24.1 mi,
93°
• Polk County
20.6 mi,
257°
• Benton County
44.8 mi,
342°
• Wright County
41.8 mi,
133°
• Cedar County
44.7 mi,
274°
• Hickory County
23.6 mi,
317°
[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
*Polk Missouri Notes
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