Last official estimated population of Atascosa County was 44,955 (year 2014)[1]. This was 0.014% of total US population and 0.2% of total Texas state population. Area of Atascosa County is 1,221.5 mi² (=3163.6 km²), in this year population density was 36.80 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Atascosa County population in 2026 would be 45,087 [0].
Historical population of Atascosa 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] +6.33 %/yr
[1870-1880] +3.76 %/yr
[1880-1890] +4.36 %/yr
[1890-1900] +1.01 %/yr
[1900-1910] +3.43 %/yr
[1910-1920] +2.42 %/yr
[1920-1930] +2.11 %/yr
[1930-1940] +2.1 %/yr
[1940-1950] +0.39 %/yr
[1950-1960] -0.63 %/yr
[1960-1970] -0.07 %/yr
[1970-1980] +2.97 %/yr
[1980-1990] +2 %/yr
[1990-2000] +2.36 %/yr
[2000-2005] +1.96 %/yr
[2005-2010] +1.11 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Atascosa County? Visit this page: Settlements in Atascosa County, TX
Population of Atascosa County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1777 | 1708 | 3,485 |
| 5 to 9 | 1891 | 1805 | 3,696 |
| 10 to 14 | 1961 | 1874 | 3,835 |
| 15 to 19 | 1791 | 1795 | 3,586 |
| 20 to 24 | 1607 | 1499 | 3,106 |
| 25 to 29 | 1521 | 1489 | 3,010 |
| 30 to 34 | 1568 | 1476 | 3,044 |
| 35 to 39 | 1451 | 1403 | 2,854 |
| 40 to 44 | 1436 | 1526 | 2,962 |
| 45 to 49 | 1424 | 1376 | 2,800 |
| 50 to 54 | 1535 | 1657 | 3,192 |
| 55 to 59 | 1423 | 1516 | 2,939 |
| 60 to 64 | 1308 | 1312 | 2,620 |
| 65 to 69 | 1116 | 1200 | 2,316 |
| 70 to 74 | 796 | 847 | 1,643 |
| 75 to 79 | 533 | 588 | 1,121 |
| 80 to 84 | 350 | 458 | 808 |
| 85+ | 274 | 483 | 757 |
Atascosa 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 | 22930 | 23249 | 46,179 |
| WA | 22663 | 22992 | 45,655 |
| H | 14929 | 14973 | 29,902 |
| HWAC | 14523 | 14588 | 29,111 |
| HWA | 14401 | 14482 | 28,883 |
| NH | 8833 | 9039 | 17,872 |
| NHWAC | 8407 | 8661 | 17,068 |
| NHWA | 8262 | 8510 | 16,772 |
| IAC | 476 | 432 | 908 |
| BAC | 433 | 393 | 826 |
| BA | 349 | 305 | 654 |
| IA | 315 | 271 | 586 |
| HIAC | 300 | 268 | 568 |
| TOM | 276 | 275 | 551 |
| NHBAC | 287 | 249 | 536 |
| NHBA | 242 | 188 | 430 |
| HIA | 225 | 198 | 423 |
| AAC | 176 | 184 | 360 |
| NHIAC | 176 | 164 | 340 |
| NHTOM | 151 | 167 | 318 |
| HBAC | 146 | 144 | 290 |
| AA | 138 | 140 | 278 |
| HTOM | 125 | 108 | 233 |
| NHAAC | 105 | 124 | 229 |
| HBA | 107 | 117 | 224 |
| NHAA | 79 | 93 | 172 |
| NHIA | 90 | 73 | 163 |
| HAAC | 71 | 60 | 131 |
| HAA | 59 | 47 | 106 |
| NAC | 28 | 37 | 65 |
| NA | 21 | 29 | 50 |
| HNAC | 15 | 23 | 38 |
| HNA | 12 | 21 | 33 |
| NHNAC | 13 | 14 | 27 |
| NHNA | 9 | 8 | 17 |
• Bexar County population
38.5 mi,
1°
• Guadalupe County
59.5 mi,
36°
• Medina County
47.2 mi,
312°
• Wilson County
33.4 mi,
54°
• Bee County
58.2 mi,
124°
• Frio County
34.7 mi,
267°
• Karnes County
41.3 mi,
88°
• Live Oak County
44.8 mi,
146°
• La Salle County
50.5 mi,
222°
• McMullen County
35.1 mi,
184°
[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 Texas Notes
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