Last official estimated population of Union County was 15,537 (year 2014)[1]. This was 0.005% of total US population and 0.1% of total Florida state population. Area of Union County is 249.8 mi² (=646.9 km²), in this year population density was 62.21 p/mi². If population growth rate would be same as in period 2010-2014 (+0%/yr), Union County population in 2026 would be 15,543 [0].
Historical population of Union County for period 1930-2014 [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
[1930-1940] -0.46 %/yr
[1940-1950] +2.3 %/yr
[1950-1960] -3.8 %/yr
[1960-1970] +2.99 %/yr
[1970-1980] +2.28 %/yr
[1980-1990] +0.08 %/yr
[1990-2000] +2.74 %/yr
[2000-2005] +2.04 %/yr
[2005-2010] +0.9 %/yr
[2010-2014] +0 %/yr
Looking for settlements in Union County? Visit this page: Settlements in Union County, FL
Population of Union County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 373 | 426 | 799 |
| 5 to 9 | 406 | 408 | 814 |
| 10 to 14 | 385 | 394 | 779 |
| 15 to 19 | 494 | 383 | 877 |
| 20 to 24 | 715 | 299 | 1,014 |
| 25 to 29 | 909 | 314 | 1,223 |
| 30 to 34 | 827 | 355 | 1,182 |
| 35 to 39 | 699 | 316 | 1,015 |
| 40 to 44 | 726 | 331 | 1,057 |
| 45 to 49 | 711 | 302 | 1,013 |
| 50 to 54 | 867 | 394 | 1,261 |
| 55 to 59 | 937 | 363 | 1,300 |
| 60 to 64 | 700 | 274 | 974 |
| 65 to 69 | 472 | 282 | 754 |
| 70 to 74 | 265 | 212 | 477 |
| 75 to 79 | 177 | 155 | 332 |
| 80 to 84 | 105 | 109 | 214 |
| 85+ | 47 | 58 | 105 |
Union 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 | 9226 | 5158 | 14,384 |
| WAC | 6926 | 4627 | 11,553 |
| WA | 6819 | 4521 | 11,340 |
| NHWAC | 6411 | 4450 | 10,861 |
| NHWA | 6315 | 4358 | 10,673 |
| BAC | 2873 | 753 | 3,626 |
| NHBAC | 2800 | 709 | 3,509 |
| BA | 2802 | 677 | 3,479 |
| NHBA | 2734 | 640 | 3,374 |
| H | 589 | 217 | 806 |
| HWAC | 515 | 177 | 692 |
| HWA | 504 | 163 | 667 |
| TOM | 116 | 114 | 230 |
| NHTOM | 105 | 100 | 205 |
| IAC | 67 | 67 | 134 |
| HBAC | 73 | 44 | 117 |
| NHIAC | 57 | 60 | 117 |
| HBA | 68 | 37 | 105 |
| AAC | 56 | 37 | 93 |
| NHAAC | 54 | 35 | 89 |
| AA | 42 | 26 | 68 |
| IA | 32 | 36 | 68 |
| NHAA | 40 | 25 | 65 |
| NHIA | 28 | 34 | 62 |
| HTOM | 11 | 14 | 25 |
| NAC | 10 | 7 | 17 |
| HIAC | 10 | 7 | 17 |
| NHNAC | 10 | 6 | 16 |
| HIA | 4 | 2 | 6 |
| NHNA | 4 | 1 | 5 |
| NA | 4 | 1 | 5 |
| HAAC | 2 | 2 | 4 |
| HAA | 2 | 1 | 3 |
| HNAC | 0 | 1 | 1 |
| HNA | 0 | 0 | 0 |
• Duval County population
47.1 mi, 
65°
• Alachua County
26.2 mi, 
178°
• Clay County
30.4 mi, 
98°
• Putnam County
48.7 mi, 
129°
• Columbia County
19.2 mi, 
307°
• Suwannee County
38.5 mi, 
283°
• Bradford County
13.9 mi, 
120°
• Baker County
19.1 mi, 
11°
• Gilchrist County
34.4 mi, 
228°
• Hamilton County
46.1 mi, 310°
[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
*Bradford Florida Notes
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