Last official estimated population of Jefferson County was 7,712 (year 2014)[1]. This was 0.002% of total US population and 0.3% of total Mississippi state population. Area of Jefferson County is 527.3 mi² (=1365.6 km²), in this year population density was 14.63 p/mi². If population growth rate would be same as in period 2010-2014 (-0.05%/yr), Jefferson County population in 2025 would be 7,674 [0].
Historical population of Jefferson County for period 1800-2014 [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
[1800-1810] +3.13 %/yr
[1810-1820] +5.48 %/yr
[1820-1830] +3.64 %/yr
[1830-1840] +1.79 %/yr
[1840-1850] +1.25 %/yr
[1850-1860] +1.53 %/yr
[1860-1870] -1.02 %/yr
[1870-1880] +2.26 %/yr
[1880-1890] +0.91 %/yr
[1890-1900] +1.17 %/yr
[1900-1910] -1.55 %/yr
[1910-1920] -1.32 %/yr
[1920-1930] -1.09 %/yr
[1930-1940] -0.23 %/yr
[1940-1950] -2.09 %/yr
[1950-1960] -1.08 %/yr
[1960-1970] -0.87 %/yr
[1970-1980] -0.12 %/yr
[1980-1990] -0.59 %/yr
[1990-2000] +1.17 %/yr
[2000-2005] -2.74 %/yr
[2005-2010] -1.8 %/yr
[2010-2014] -0.05 %/yr
Looking for settlements in Jefferson County? Visit this page: Settlements in Jefferson County, MS
Population of Jefferson County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 247 | 272 | 519 |
| 5 to 9 | 264 | 212 | 476 |
| 10 to 14 | 254 | 232 | 486 |
| 15 to 19 | 227 | 232 | 459 |
| 20 to 24 | 313 | 251 | 564 |
| 25 to 29 | 293 | 237 | 530 |
| 30 to 34 | 282 | 248 | 530 |
| 35 to 39 | 233 | 205 | 438 |
| 40 to 44 | 224 | 213 | 437 |
| 45 to 49 | 207 | 233 | 440 |
| 50 to 54 | 286 | 293 | 579 |
| 55 to 59 | 293 | 306 | 599 |
| 60 to 64 | 224 | 259 | 483 |
| 65 to 69 | 156 | 178 | 334 |
| 70 to 74 | 103 | 131 | 234 |
| 75 to 79 | 83 | 124 | 207 |
| 80 to 84 | 50 | 82 | 132 |
| 85+ | 47 | 105 | 152 |
Jefferson 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 | 3770 | 3790 | 7,560 |
| BAC | 3215 | 3272 | 6,487 |
| BA | 3204 | 3265 | 6,469 |
| NHBAC | 3207 | 3257 | 6,464 |
| NHBA | 3198 | 3251 | 6,449 |
| WAC | 577 | 530 | 1,107 |
| NHWAC | 568 | 523 | 1,091 |
| WA | 557 | 517 | 1,074 |
| NHWA | 550 | 512 | 1,062 |
| H | 16 | 23 | 39 |
| TOM | 22 | 14 | 36 |
| NHTOM | 20 | 12 | 32 |
| IAC | 11 | 17 | 28 |
| NHIAC | 10 | 16 | 26 |
| HBAC | 8 | 15 | 23 |
| HBA | 6 | 14 | 20 |
| HWAC | 9 | 7 | 16 |
| IA | 1 | 12 | 13 |
| NHIA | 1 | 12 | 13 |
| HWA | 7 | 5 | 12 |
| AAC | 4 | 5 | 9 |
| NHAAC | 4 | 5 | 9 |
| NAC | 2 | 3 | 5 |
| HTOM | 2 | 2 | 4 |
| NA | 1 | 3 | 4 |
| HNAC | 1 | 2 | 3 |
| AA | 1 | 2 | 3 |
| HNA | 1 | 2 | 3 |
| NHAA | 1 | 2 | 3 |
| NHNAC | 1 | 1 | 2 |
| HIAC | 1 | 1 | 2 |
| NHNA | 0 | 1 | 1 |
| HIA | 0 | 0 | 0 |
| HAAC | 0 | 0 | 0 |
| HAA | 0 | 0 | 0 |
• Lincoln County population
37.3 mi, 
111°
• Adams County
24.9 mi, 
226°
• Copiah County
36.1 mi, 
75°
• Concordia Parish
38.8 mi, 
241°
• Amite County
39.4 mi, 
158°
• Madison Parish
43.6 mi, 
344°
• Wilkinson County
42.9 mi, 
202°
• Claiborne County
18.2 mi, 
24°
• Franklin County
19.7 mi, 
153°
• Tensas Parish
25.5 mi, 
316°
[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
1800: Pickering Mississippi Notes
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