Last official estimated population of Lamar County was 56,095 (year 2014)[1]. This was 0.018% of total US population and 1.9% of total Mississippi state population. Area of Lamar County is 500.4 mi² (=1296.1 km²), in this year population density was 112.09 p/mi². If population growth rate would be same as in period 2010-2014 (+0.2%/yr), Lamar County population in 2025 would be 57,315 [0].
Historical population of Lamar County for period 1910-2014 [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

[1910-1920] +0.92 %/yr
[1920-1930] -0.02 %/yr
[1930-1940] -0.6 %/yr
[1940-1950] +0.9 %/yr
[1950-1960] +0.34 %/yr
[1960-1970] +1.07 %/yr
[1970-1980] +4.59 %/yr
[1980-1990] +2.48 %/yr
[1990-2000] +2.74 %/yr
[2000-2005] +3.2 %/yr
[2005-2010] +3.58 %/yr
[2010-2014] +0.2 %/yr
Looking for settlements in Lamar County? Visit this page: Settlements in Lamar County, MS
Population of Lamar County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2130 | 2033 | 4,163 |
| 5 to 9 | 2231 | 2256 | 4,487 |
| 10 to 14 | 2162 | 2149 | 4,311 |
| 15 to 19 | 1959 | 1834 | 3,793 |
| 20 to 24 | 2118 | 2230 | 4,348 |
| 25 to 29 | 2236 | 2507 | 4,743 |
| 30 to 34 | 2136 | 2471 | 4,607 |
| 35 to 39 | 2089 | 2213 | 4,302 |
| 40 to 44 | 2064 | 2100 | 4,164 |
| 45 to 49 | 1833 | 1944 | 3,777 |
| 50 to 54 | 1789 | 2045 | 3,834 |
| 55 to 59 | 1676 | 1873 | 3,549 |
| 60 to 64 | 1462 | 1594 | 3,056 |
| 65 to 69 | 1181 | 1302 | 2,483 |
| 70 to 74 | 798 | 919 | 1,717 |
| 75 to 79 | 519 | 714 | 1,233 |
| 80 to 84 | 289 | 476 | 765 |
| 85+ | 272 | 495 | 767 |
Lamar 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 | 28197 | 30424 | 58,621 |
| WAC | 22838 | 23770 | 46,608 |
| WA | 22496 | 23446 | 45,942 |
| NHWAC | 22190 | 23112 | 45,302 |
| NHWA | 21878 | 22811 | 44,689 |
| BAC | 5790 | 7058 | 12,848 |
| NHBAC | 5717 | 6994 | 12,711 |
| BA | 5567 | 6842 | 12,409 |
| NHBA | 5513 | 6795 | 12,308 |
| H | 747 | 731 | 1,478 |
| HWAC | 648 | 658 | 1,306 |
| HWA | 618 | 635 | 1,253 |
| AAC | 448 | 482 | 930 |
| NHAAC | 437 | 474 | 911 |
| AA | 387 | 416 | 803 |
| NHAA | 379 | 413 | 792 |
| TOM | 378 | 366 | 744 |
| NHTOM | 343 | 335 | 678 |
| IAC | 235 | 196 | 431 |
| NHIAC | 188 | 167 | 355 |
| IA | 102 | 66 | 168 |
| HBAC | 73 | 64 | 137 |
| NHIA | 71 | 55 | 126 |
| HBA | 54 | 47 | 101 |
| HIAC | 47 | 29 | 76 |
| HTOM | 35 | 31 | 66 |
| NAC | 28 | 31 | 59 |
| NHNAC | 21 | 24 | 45 |
| HIA | 31 | 11 | 42 |
| NA | 14 | 19 | 33 |
| NHNA | 13 | 15 | 28 |
| HAAC | 11 | 8 | 19 |
| HNAC | 7 | 7 | 14 |
| HAA | 8 | 3 | 11 |
| HNA | 1 | 4 | 5 |
• Forrest County population
14.6 mi,
92°
• Jones County
35.1 mi,
34°
• Pearl River County
29.6 mi,
189°
• Washington Parish
39.9 mi,
233°
• Marion County
18.8 mi,
276°
• Covington County
30.2 mi,
355°
• Stone County
36.6 mi,
140°
• Walthall County
35.4 mi,
266°
• Jefferson Davis County
31.7 mi,
323°
• Perry County
30.7 mi,
93°
[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
*Marion; Pearl River Mississippi Notes
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