Last official estimated population of Hamilton County was 8,485 (year 2014)[1]. This was 0.003% of total US population and 0% of total Texas state population. Area of Hamilton County is 836.4 mi² (=2166.2 km²), in this year population density was 10.14 p/mi². If population growth rate would be same as in period 2010-2014 (-0.09%/yr), Hamilton County population in 2026 would be 8,390 [0].
Historical population of Hamilton 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] +4.13 %/yr
[1870-1880] +24.13 %/yr
[1880-1890] +3.88 %/yr
[1890-1900] +3.8 %/yr
[1900-1910] +1.25 %/yr
[1910-1920] -0.43 %/yr
[1920-1930] -0.81 %/yr
[1930-1940] -0.16 %/yr
[1940-1950] -2.19 %/yr
[1950-1960] -2.25 %/yr
[1960-1970] -1.63 %/yr
[1970-1980] +1.43 %/yr
[1980-1990] -0.7 %/yr
[1990-2000] +0.62 %/yr
[2000-2005] +0.09 %/yr
[2005-2010] +0.61 %/yr
[2010-2014] -0.09 %/yr
Looking for settlements in Hamilton County? Visit this page: Settlements in Hamilton County, TX
Population of Hamilton County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 202 | 221 | 423 |
| 5 to 9 | 240 | 219 | 459 |
| 10 to 14 | 244 | 239 | 483 |
| 15 to 19 | 264 | 222 | 486 |
| 20 to 24 | 213 | 222 | 435 |
| 25 to 29 | 205 | 185 | 390 |
| 30 to 34 | 187 | 182 | 369 |
| 35 to 39 | 206 | 188 | 394 |
| 40 to 44 | 216 | 222 | 438 |
| 45 to 49 | 229 | 205 | 434 |
| 50 to 54 | 304 | 294 | 598 |
| 55 to 59 | 287 | 306 | 593 |
| 60 to 64 | 275 | 304 | 579 |
| 65 to 69 | 277 | 303 | 580 |
| 70 to 74 | 255 | 281 | 536 |
| 75 to 79 | 199 | 211 | 410 |
| 80 to 84 | 125 | 143 | 268 |
| 85+ | 96 | 228 | 324 |
Hamilton 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 | 3870 | 4037 | 7,907 |
| WA | 3826 | 4006 | 7,832 |
| NH | 3547 | 3728 | 7,275 |
| NHWAC | 3470 | 3650 | 7,120 |
| NHWA | 3435 | 3621 | 7,056 |
| H | 477 | 447 | 924 |
| HWAC | 400 | 387 | 787 |
| HWA | 391 | 385 | 776 |
| IAC | 92 | 79 | 171 |
| IA | 78 | 66 | 144 |
| BAC | 68 | 57 | 125 |
| HIAC | 64 | 49 | 113 |
| HIA | 60 | 49 | 109 |
| NHBAC | 53 | 49 | 102 |
| BA | 46 | 39 | 85 |
| TOM | 47 | 35 | 82 |
| NHTOM | 38 | 33 | 71 |
| NHBA | 36 | 33 | 69 |
| AAC | 32 | 35 | 67 |
| NHAAC | 28 | 31 | 59 |
| NHIAC | 28 | 30 | 58 |
| AA | 23 | 28 | 51 |
| NHAA | 19 | 24 | 43 |
| NHIA | 18 | 17 | 35 |
| HBAC | 15 | 8 | 23 |
| HBA | 10 | 6 | 16 |
| NAC | 9 | 3 | 12 |
| HTOM | 9 | 2 | 11 |
| NHNAC | 6 | 2 | 8 |
| HAAC | 4 | 4 | 8 |
| HAA | 4 | 4 | 8 |
| NA | 4 | 1 | 5 |
| HNAC | 3 | 1 | 4 |
| HNA | 3 | 1 | 4 |
| NHNA | 1 | 0 | 1 |
• McLennan County population
54.7 mi,
101°
• Coryell County
28.6 mi,
139°
• Hood County
52.6 mi,
18°
• Brown County
52.2 mi,
274°
• Erath County
37.2 mi,
349°
• Lampasas County
36.1 mi,
192°
• Bosque County
30.9 mi,
64°
• Comanche County
30.7 mi,
303°
• Somervell County
40.6 mi,
29°
• Mills County
32 mi,
242°
[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
*Milam Texas Notes
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