Last official estimated population of Grundy County was 13,721 (year 2014)[1]. This was 0.004% of total US population and 0.2% of total Tennessee state population. Area of Grundy County is 361.1 mi² (=935.3 km²), in this year population density was 38.00 p/mi². If population growth rate would be same as in period 2010-2014 (+0.03%/yr), Grundy County population in 2025 would be 13,771 [0].
Historical population of Grundy 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] +1.1 %/yr
[1860-1870] +0.5 %/yr
[1870-1880] +3.52 %/yr
[1880-1890] +3.29 %/yr
[1890-1900] +2.09 %/yr
[1900-1910] +0.65 %/yr
[1910-1920] +1.6 %/yr
[1920-1930] -0.04 %/yr
[1930-1940] +1.74 %/yr
[1940-1950] +0.84 %/yr
[1950-1960] -0.87 %/yr
[1960-1970] -0.79 %/yr
[1970-1980] +2.63 %/yr
[1980-1990] -0.31 %/yr
[1990-2000] +0.7 %/yr
[2000-2005] -0.26 %/yr
[2005-2010] -0.62 %/yr
[2010-2014] +0.03 %/yr
Looking for settlements in Grundy County? Visit this page: Settlements in Grundy County, TN
Population of Grundy County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 371 | 321 | 692 |
| 5 to 9 | 417 | 368 | 785 |
| 10 to 14 | 484 | 419 | 903 |
| 15 to 19 | 426 | 381 | 807 |
| 20 to 24 | 391 | 378 | 769 |
| 25 to 29 | 332 | 368 | 700 |
| 30 to 34 | 358 | 381 | 739 |
| 35 to 39 | 382 | 393 | 775 |
| 40 to 44 | 448 | 423 | 871 |
| 45 to 49 | 440 | 417 | 857 |
| 50 to 54 | 495 | 440 | 935 |
| 55 to 59 | 471 | 492 | 963 |
| 60 to 64 | 394 | 458 | 852 |
| 65 to 69 | 449 | 522 | 971 |
| 70 to 74 | 352 | 376 | 728 |
| 75 to 79 | 220 | 301 | 521 |
| 80 to 84 | 134 | 177 | 311 |
| 85+ | 79 | 167 | 246 |
Grundy 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 | 6563 | 6713 | 13,276 |
| WAC | 6551 | 6676 | 13,227 |
| NHWAC | 6476 | 6615 | 13,091 |
| WA | 6484 | 6598 | 13,082 |
| NHWA | 6409 | 6537 | 12,946 |
| IAC | 81 | 101 | 182 |
| NHIAC | 77 | 95 | 172 |
| NHTOM | 70 | 82 | 152 |
| TOM | 70 | 82 | 152 |
| H | 80 | 69 | 149 |
| HWA | 75 | 61 | 136 |
| HWAC | 75 | 61 | 136 |
| BAC | 64 | 58 | 122 |
| NHBAC | 63 | 56 | 119 |
| IA | 35 | 48 | 83 |
| BA | 44 | 34 | 78 |
| NHBA | 43 | 32 | 75 |
| NHIA | 31 | 42 | 73 |
| NHAAC | 21 | 28 | 49 |
| AAC | 21 | 28 | 49 |
| AA | 10 | 19 | 29 |
| NHAA | 10 | 19 | 29 |
| HIAC | 4 | 6 | 10 |
| HIA | 4 | 6 | 10 |
| NAC | 1 | 4 | 5 |
| NHNAC | 1 | 4 | 5 |
| HBA | 1 | 2 | 3 |
| HBAC | 1 | 2 | 3 |
| NHNA | 0 | 1 | 1 |
| NA | 0 | 1 | 1 |
| HNAC | 0 | 0 | 0 |
| HAAC | 0 | 0 | 0 |
| HTOM | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Hamilton County population
32.9 mi, 
119°
• Coffee County
21.7 mi, 
287°
• Franklin County
27.4 mi, 
233°
• Warren County
20 mi, 
349°
• Marion County
18.7 mi, 
163°
• Sequatchie County
17 mi, 
94°
• Cannon County
34.8 mi, 
325°
• Bledsoe County
31.6 mi, 
63°
• Moore County
37.2 mi, 
258°
• Van Buren County
25.4 mi, 
33°
[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
See note 16 Tennessee Notes
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