Last official estimated population of Collin County was 788,568 (year 2014)[1]. This was 0.247% of total US population and 2.9% of total Texas state population. Area of Collin County is 886.1 mi² (=2295.1 km²), in this year population density was 889.89 p/mi². If population growth rate would be same as in period 2010-2014 (+0.2%/yr), Collin County population in 2024 would be 804,353 [0].
Historical population of Collin 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] +16.86 %/yr
[1860-1870] +4.23 %/yr
[1870-1880] +6.37 %/yr
[1880-1890] +3.52 %/yr
[1890-1900] +3.15 %/yr
[1900-1910] -0.21 %/yr
[1910-1920] +0.12 %/yr
[1920-1930] -0.71 %/yr
[1930-1940] +0.22 %/yr
[1940-1950] -1.23 %/yr
[1950-1960] -0.11 %/yr
[1960-1970] +4.96 %/yr
[1970-1980] +8.01 %/yr
[1980-1990] +6.21 %/yr
[1990-2000] +6.41 %/yr
[2000-2005] +5.67 %/yr
[2005-2010] +3.87 %/yr
[2010-2014] +0.2 %/yr
Looking for settlements in Collin County? Visit this page: Settlements in Collin County, TX
Population of Collin County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 29300 | 28227 | 57,527 |
| 5 to 9 | 35007 | 33605 | 68,612 |
| 10 to 14 | 37090 | 35750 | 72,840 |
| 15 to 19 | 32325 | 30574 | 62,899 |
| 20 to 24 | 25331 | 24299 | 49,630 |
| 25 to 29 | 25153 | 26121 | 51,274 |
| 30 to 34 | 29566 | 32562 | 62,128 |
| 35 to 39 | 33170 | 36478 | 69,648 |
| 40 to 44 | 37607 | 39037 | 76,644 |
| 45 to 49 | 34343 | 34754 | 69,097 |
| 50 to 54 | 32973 | 32939 | 65,912 |
| 55 to 59 | 25478 | 26416 | 51,894 |
| 60 to 64 | 19300 | 21790 | 41,090 |
| 65 to 69 | 15233 | 17901 | 33,134 |
| 70 to 74 | 10226 | 11904 | 22,130 |
| 75 to 79 | 6158 | 7624 | 13,782 |
| 80 to 84 | 3611 | 5130 | 8,741 |
| 85+ | 2720 | 5539 | 8,259 |
Collin 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 | 367513 | 384090 | 751,603 |
| WAC | 334341 | 342916 | 677,257 |
| WA | 324347 | 332649 | 656,996 |
| NHWAC | 271351 | 280341 | 551,692 |
| NHWA | 262892 | 271673 | 534,565 |
| H | 67078 | 66560 | 133,638 |
| HWAC | 62990 | 62575 | 125,565 |
| AAC | 61341 | 63774 | 125,115 |
| NHAAC | 60152 | 62527 | 122,679 |
| HWA | 61455 | 60976 | 122,431 |
| AA | 55883 | 58251 | 114,134 |
| NHAA | 55299 | 57631 | 112,930 |
| BAC | 43660 | 49133 | 92,793 |
| NHBAC | 41214 | 46566 | 87,780 |
| BA | 39900 | 45087 | 84,987 |
| NHBA | 38029 | 43122 | 81,151 |
| TOM | 10884 | 11231 | 22,115 |
| NHTOM | 9221 | 9514 | 18,735 |
| IAC | 5935 | 5928 | 11,863 |
| NHIAC | 3890 | 4089 | 7,979 |
| IA | 3181 | 3033 | 6,214 |
| HBAC | 2446 | 2567 | 5,013 |
| HIAC | 2045 | 1839 | 3,884 |
| HBA | 1871 | 1965 | 3,836 |
| NHIA | 1798 | 1870 | 3,668 |
| HTOM | 1663 | 1717 | 3,380 |
| HIA | 1383 | 1163 | 2,546 |
| HAAC | 1189 | 1247 | 2,436 |
| NAC | 893 | 934 | 1,827 |
| NHNAC | 672 | 716 | 1,388 |
| HAA | 584 | 620 | 1,204 |
| NA | 396 | 399 | 795 |
| NHNA | 274 | 280 | 554 |
| HNAC | 221 | 218 | 439 |
| HNA | 122 | 119 | 241 |
• Dallas County population
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• Hunt County
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• Fannin County
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• Rains County
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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
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