Last official estimated population of Martin County was 4,817 (year 2014)[1]. This was 0.002% of total US population and 0% of total Texas state population. Area of Martin County is 915.8 mi² (=2371.8 km²), in this year population density was 5.26 p/mi². If population growth rate would be same as in period 2010-2014 (+0.09%/yr), Martin County population in 2026 would be 4,871 [0].
Historical population of Martin County for period 1880-2014 [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

[1880-1890] +36.22 %/yr
[1890-1900] +2.32 %/yr
[1900-1910] +16.65 %/yr
[1910-1920] -2.97 %/yr
[1920-1930] +17.57 %/yr
[1930-1940] -0.4 %/yr
[1940-1950] -0.03 %/yr
[1950-1960] -0.89 %/yr
[1960-1970] -0.6 %/yr
[1970-1980] -0.19 %/yr
[1980-1990] +0.57 %/yr
[1990-2000] -0.43 %/yr
[2000-2005] -1.29 %/yr
[2005-2010] +1.54 %/yr
[2010-2014] +0.09 %/yr
Looking for settlements in Martin County? Visit this page: Settlements in Martin County, TX
Population of Martin County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 236 | 251 | 487 |
| 5 to 9 | 235 | 240 | 475 |
| 10 to 14 | 204 | 229 | 433 |
| 15 to 19 | 214 | 186 | 400 |
| 20 to 24 | 205 | 179 | 384 |
| 25 to 29 | 205 | 209 | 414 |
| 30 to 34 | 188 | 158 | 346 |
| 35 to 39 | 149 | 122 | 271 |
| 40 to 44 | 163 | 158 | 321 |
| 45 to 49 | 174 | 169 | 343 |
| 50 to 54 | 191 | 190 | 381 |
| 55 to 59 | 148 | 162 | 310 |
| 60 to 64 | 108 | 122 | 230 |
| 65 to 69 | 109 | 130 | 239 |
| 70 to 74 | 68 | 95 | 163 |
| 75 to 79 | 55 | 59 | 114 |
| 80 to 84 | 36 | 39 | 75 |
| 85+ | 31 | 43 | 74 |
Martin 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 | 2595 | 2638 | 5,233 |
| WA | 2563 | 2610 | 5,173 |
| NH | 1447 | 1523 | 2,970 |
| NHWAC | 1370 | 1463 | 2,833 |
| NHWA | 1347 | 1444 | 2,791 |
| H | 1272 | 1218 | 2,490 |
| HWAC | 1225 | 1175 | 2,400 |
| HWA | 1216 | 1166 | 2,382 |
| BAC | 88 | 75 | 163 |
| BA | 71 | 57 | 128 |
| NHBAC | 67 | 48 | 115 |
| IAC | 59 | 45 | 104 |
| NHBA | 54 | 39 | 93 |
| IA | 39 | 32 | 71 |
| TOM | 35 | 32 | 67 |
| HIAC | 34 | 24 | 58 |
| HIA | 27 | 21 | 48 |
| HBAC | 21 | 27 | 48 |
| NHIAC | 25 | 21 | 46 |
| NHTOM | 25 | 20 | 45 |
| HBA | 17 | 18 | 35 |
| AAC | 13 | 12 | 25 |
| NHIA | 12 | 11 | 23 |
| HTOM | 10 | 12 | 22 |
| NHAAC | 11 | 9 | 20 |
| AA | 8 | 8 | 16 |
| NHAA | 6 | 7 | 13 |
| NAC | 6 | 3 | 9 |
| NHNAC | 4 | 2 | 6 |
| NHNA | 3 | 2 | 5 |
| NA | 3 | 2 | 5 |
| HAAC | 2 | 3 | 5 |
| HNAC | 2 | 1 | 3 |
| HAA | 2 | 1 | 3 |
| HNA | 0 | 0 | 0 |
• Ector County population
45.8 mi,
227°
• Midland County
30.5 mi,
186°
• Howard County
30.5 mi,
90°
• Gaines County
49.2 mi,
307°
• Andrews County
39.6 mi,
270°
• Dawson County
29.9 mi,
1°
• Mitchell County
60.6 mi,
90°
• Lynn County
60.6 mi,
7°
• Glasscock County
40 mi,
139°
• Borden County
42.5 mi,
45°
[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
*Bexar District Texas Notes
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