Last official estimated population of Brazoria County was 314,452 (year 2014)[1]. This was 0.099% of total US population and 1.1% of total Texas state population. Area of Brazoria County is 1,608.6 mi² (=4166.3 km²), in this year population density was 195.48 p/mi². If population growth rate would be same as in period 2010-2014 (+0.1%/yr), Brazoria County population in 2026 would be 318,342 [0].
Historical population of Brazoria 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] +3.97 %/yr
[1860-1870] +0.53 %/yr
[1870-1880] +2.65 %/yr
[1880-1890] +1.64 %/yr
[1890-1900] +2.59 %/yr
[1900-1910] -1.1 %/yr
[1910-1920] +4.48 %/yr
[1920-1930] +1.12 %/yr
[1930-1940] +1.62 %/yr
[1940-1950] +5.57 %/yr
[1950-1960] +5.05 %/yr
[1960-1970] +3.58 %/yr
[1970-1980] +4.59 %/yr
[1980-1990] +1.23 %/yr
[1990-2000] +2.35 %/yr
[2000-2005] +2.56 %/yr
[2005-2010] +2.68 %/yr
[2010-2014] +0.1 %/yr
Looking for settlements in Brazoria County? Visit this page: Settlements in Brazoria County, TX
Population of Brazoria County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 12410 | 11716 | 24,126 |
| 5 to 9 | 13206 | 12687 | 25,893 |
| 10 to 14 | 13198 | 12910 | 26,108 |
| 15 to 19 | 11845 | 10726 | 22,571 |
| 20 to 24 | 10969 | 9996 | 20,965 |
| 25 to 29 | 11186 | 10691 | 21,877 |
| 30 to 34 | 12853 | 12418 | 25,271 |
| 35 to 39 | 12174 | 11850 | 24,024 |
| 40 to 44 | 12902 | 12266 | 25,168 |
| 45 to 49 | 11974 | 11130 | 23,104 |
| 50 to 54 | 12218 | 11477 | 23,695 |
| 55 to 59 | 10906 | 10653 | 21,559 |
| 60 to 64 | 8614 | 8390 | 17,004 |
| 65 to 69 | 6574 | 6675 | 13,249 |
| 70 to 74 | 4394 | 4996 | 9,390 |
| 75 to 79 | 2809 | 3313 | 6,122 |
| 80 to 84 | 1804 | 2438 | 4,242 |
| 85+ | 1293 | 2463 | 3,756 |
Brazoria 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 | 135515 | 132124 | 267,639 |
| WA | 132657 | 129299 | 261,956 |
| NH | 120332 | 118939 | 239,271 |
| NHWAC | 86876 | 86476 | 173,352 |
| NHWA | 84615 | 84258 | 168,873 |
| H | 50997 | 47856 | 98,853 |
| HWAC | 48639 | 45648 | 94,287 |
| HWA | 48042 | 45041 | 93,083 |
| BAC | 25086 | 23344 | 48,430 |
| NHBAC | 23766 | 21994 | 45,760 |
| BA | 23644 | 21907 | 45,551 |
| NHBA | 22599 | 20816 | 43,415 |
| AAC | 11422 | 12088 | 23,510 |
| NHAAC | 10974 | 11666 | 22,640 |
| AA | 10374 | 11054 | 21,428 |
| NHAA | 10074 | 10783 | 20,857 |
| TOM | 3115 | 3108 | 6,223 |
| NHTOM | 2462 | 2450 | 4,912 |
| IAC | 2343 | 2303 | 4,646 |
| IA | 1398 | 1293 | 2,691 |
| HBAC | 1320 | 1350 | 2,670 |
| NHIAC | 1182 | 1291 | 2,473 |
| HIAC | 1161 | 1012 | 2,173 |
| HBA | 1045 | 1091 | 2,136 |
| HIA | 870 | 723 | 1,593 |
| HTOM | 653 | 658 | 1,311 |
| NHIA | 528 | 570 | 1,098 |
| HAAC | 448 | 422 | 870 |
| HAA | 300 | 271 | 571 |
| NAC | 278 | 270 | 548 |
| NHNAC | 156 | 158 | 314 |
| NA | 141 | 134 | 275 |
| HNAC | 122 | 112 | 234 |
| HNA | 87 | 72 | 159 |
| NHNA | 54 | 62 | 116 |
• Harris County population
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32.8 mi, 
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• Waller County
67.1 mi, 
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• Wharton County
48.5 mi, 
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• Matagorda County
43.7 mi, 
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• Chambers County
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• Austin County
70.9 mi, 
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• Colorado County
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• Jackson 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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