Last official estimated population of Duplin County was 58,710 (year 2014)[1]. This was 0.018% of total US population and 0.6% of total North Carolina state population. Area of Duplin County is 821.7 mi² (=2128.1 km²), in this year population density was 71.45 p/mi². If population growth rate would be same as in period 2010-2014 (+0.09%/yr), Duplin County population in 2026 would be 59,329 [0].
Historical population of Duplin County for period 1790-2014 [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

[1790-1800] +1.84 %/yr
[1800-1810] +1.47 %/yr
[1810-1820] +2.17 %/yr
[1820-1830] +1.48 %/yr
[1830-1840] -0.1 %/yr
[1840-1850] +1.91 %/yr
[1850-1860] +1.56 %/yr
[1860-1870] -0.15 %/yr
[1870-1880] +1.91 %/yr
[1880-1890] -0.04 %/yr
[1890-1900] +1.83 %/yr
[1900-1910] +1.28 %/yr
[1910-1920] +1.74 %/yr
[1920-1930] +1.51 %/yr
[1930-1940] +1.25 %/yr
[1940-1950] +0.33 %/yr
[1950-1960] -0.2 %/yr
[1960-1970] -0.57 %/yr
[1970-1980] +0.75 %/yr
[1980-1990] -0.24 %/yr
[1990-2000] +2.06 %/yr
[2000-2005] +1.73 %/yr
[2005-2010] +1.83 %/yr
[2010-2014] +0.09 %/yr
Looking for settlements in Duplin County? Visit this page: Settlements in Duplin County, NC
Population of Duplin County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1970 | 2010 | 3,980 |
| 5 to 9 | 2155 | 2126 | 4,281 |
| 10 to 14 | 2193 | 1922 | 4,115 |
| 15 to 19 | 2037 | 1942 | 3,979 |
| 20 to 24 | 1982 | 1760 | 3,742 |
| 25 to 29 | 1750 | 1693 | 3,443 |
| 30 to 34 | 1797 | 1756 | 3,553 |
| 35 to 39 | 1847 | 1788 | 3,635 |
| 40 to 44 | 1903 | 2019 | 3,922 |
| 45 to 49 | 1844 | 1865 | 3,709 |
| 50 to 54 | 2060 | 2165 | 4,225 |
| 55 to 59 | 2017 | 2123 | 4,140 |
| 60 to 64 | 1767 | 1919 | 3,686 |
| 65 to 69 | 1539 | 1696 | 3,235 |
| 70 to 74 | 1064 | 1259 | 2,323 |
| 75 to 79 | 727 | 945 | 1,672 |
| 80 to 84 | 470 | 767 | 1,237 |
| 85+ | 321 | 684 | 1,005 |
Duplin 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 | 22310 | 24609 | 46,919 |
| WAC | 21490 | 21287 | 42,777 |
| WA | 21128 | 20913 | 42,041 |
| NHWAC | 15307 | 16200 | 31,507 |
| NHWA | 15087 | 15945 | 31,032 |
| BAC | 7417 | 8623 | 16,040 |
| BA | 7199 | 8374 | 15,573 |
| NHBAC | 6935 | 8265 | 15,200 |
| NHBA | 6788 | 8089 | 14,877 |
| H | 7133 | 5830 | 12,963 |
| HWAC | 6183 | 5087 | 11,270 |
| HWA | 6041 | 4968 | 11,009 |
| IAC | 603 | 575 | 1,178 |
| HBAC | 482 | 358 | 840 |
| TOM | 408 | 425 | 833 |
| IA | 415 | 401 | 816 |
| HIAC | 417 | 349 | 766 |
| HBA | 411 | 285 | 696 |
| HIA | 328 | 286 | 614 |
| NHTOM | 249 | 291 | 540 |
| AAC | 209 | 259 | 468 |
| NHIAC | 186 | 226 | 412 |
| AA | 165 | 206 | 371 |
| NHAAC | 109 | 191 | 300 |
| HTOM | 159 | 134 | 293 |
| NAC | 145 | 137 | 282 |
| NA | 128 | 120 | 248 |
| NHAA | 78 | 155 | 233 |
| HNAC | 116 | 108 | 224 |
| HNA | 107 | 106 | 213 |
| NHIA | 87 | 115 | 202 |
| HAAC | 100 | 68 | 168 |
| HAA | 87 | 51 | 138 |
| NHNAC | 29 | 29 | 58 |
| NHNA | 21 | 14 | 35 |
• Onslow County population
27.3 mi,
115°
• Johnston County
46.9 mi,
328°
• Wayne County
29.3 mi,
351°
• Craven County
49.8 mi,
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• Sampson County
25.1 mi,
278°
• Lenoir County
27 mi,
38°
• Pender County
29.3 mi,
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• Bladen County
41.7 mi,
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• Greene County
40.4 mi,
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• Jones County
33.4 mi,
78°
[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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