Last official estimated population of Trinity County was 14,697 (year 2014)[1]. This was 0.005% of total US population and 0.1% of total Texas state population. Area of Trinity County is 714.0 mi² (=1849.2 km²), in this year population density was 20.58 p/mi². If population growth rate would be same as in period 2010-2014 (+0.19%/yr), Trinity County population in 2024 would be 14,981 [0].
Historical population of Trinity County for period 1860-2014 [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
[1860-1870] -0.59 %/yr
[1870-1880] +1.73 %/yr
[1880-1890] +4.52 %/yr
[1890-1900] +3.68 %/yr
[1900-1910] +1.52 %/yr
[1910-1920] +0.65 %/yr
[1920-1930] +0.01 %/yr
[1930-1940] +0.05 %/yr
[1940-1950] -3.06 %/yr
[1950-1960] -2.82 %/yr
[1960-1970] +0.12 %/yr
[1970-1980] +2.16 %/yr
[1980-1990] +1.93 %/yr
[1990-2000] +1.85 %/yr
[2000-2005] +0.92 %/yr
[2005-2010] +0.26 %/yr
[2010-2014] +0.19 %/yr
Looking for settlements in Trinity County? Visit this page: Settlements in Trinity County, TX
Population of Trinity County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 342 | 328 | 670 |
| 5 to 9 | 410 | 383 | 793 |
| 10 to 14 | 390 | 421 | 811 |
| 15 to 19 | 385 | 396 | 781 |
| 20 to 24 | 353 | 339 | 692 |
| 25 to 29 | 291 | 351 | 642 |
| 30 to 34 | 336 | 344 | 680 |
| 35 to 39 | 315 | 353 | 668 |
| 40 to 44 | 369 | 397 | 766 |
| 45 to 49 | 392 | 391 | 783 |
| 50 to 54 | 498 | 555 | 1,053 |
| 55 to 59 | 486 | 622 | 1,108 |
| 60 to 64 | 541 | 639 | 1,180 |
| 65 to 69 | 589 | 549 | 1,138 |
| 70 to 74 | 440 | 495 | 935 |
| 75 to 79 | 348 | 341 | 689 |
| 80 to 84 | 207 | 265 | 472 |
| 85+ | 159 | 204 | 363 |
Trinity 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 | 6168 | 6743 | 12,911 |
| WAC | 6132 | 6497 | 12,629 |
| WA | 6035 | 6383 | 12,418 |
| NHWAC | 5483 | 5904 | 11,387 |
| NHWA | 5397 | 5802 | 11,199 |
| BAC | 684 | 807 | 1,491 |
| NHBAC | 673 | 798 | 1,471 |
| BA | 638 | 757 | 1,395 |
| NHBA | 632 | 752 | 1,384 |
| H | 683 | 630 | 1,313 |
| HWAC | 649 | 593 | 1,242 |
| HWA | 638 | 581 | 1,219 |
| IAC | 101 | 127 | 228 |
| TOM | 107 | 120 | 227 |
| NHTOM | 95 | 108 | 203 |
| NHIAC | 76 | 95 | 171 |
| IA | 45 | 72 | 117 |
| AAC | 42 | 57 | 99 |
| NHAAC | 32 | 52 | 84 |
| NHIA | 26 | 47 | 73 |
| AA | 26 | 38 | 64 |
| HIAC | 25 | 32 | 57 |
| NHAA | 18 | 34 | 52 |
| HIA | 19 | 25 | 44 |
| HTOM | 12 | 12 | 24 |
| HBAC | 11 | 9 | 20 |
| HAAC | 10 | 5 | 15 |
| HAA | 8 | 4 | 12 |
| HBA | 6 | 5 | 11 |
| NAC | 0 | 8 | 8 |
| HNAC | 0 | 4 | 4 |
| NHNAC | 0 | 4 | 4 |
| NA | 0 | 3 | 3 |
| HNA | 0 | 3 | 3 |
| NHNA | 0 | 0 | 0 |
• Angelina County population
33.7 mi, 
71°
• Walker County
34.8 mi, 
225°
• Nacogdoches County
47.9 mi, 
40°
• Cherokee County
51.6 mi, 
359°
• Polk County
28.5 mi, 
139°
• San Jacinto County
36.1 mi, 
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• Houston County
22.3 mi, 
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• Tyler County
51.3 mi, 
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• Leon County
51.8 mi, 
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• Madison County
47 mi, 
258°
[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
*Houston Texas Notes
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