Last official estimated population of Northampton County was 12,397 (year 2014)[1]. This was 0.004% of total US population and 0.1% of total Virginia state population. Area of Northampton County is 795.2 mi² (=2059.7 km²), in this year population density was 15.59 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Northampton County population in 2026 would be 12,421 [0].
Historical population of Northampton 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] -0.18 %/yr
[1800-1810] +1 %/yr
[1810-1820] +0.3 %/yr
[1820-1830] +1.15 %/yr
[1830-1840] -1.13 %/yr
[1840-1850] -0.28 %/yr
[1850-1860] +0.44 %/yr
[1860-1870] +0.27 %/yr
[1870-1880] +1.3 %/yr
[1880-1890] +1.2 %/yr
[1890-1900] +2.93 %/yr
[1900-1910] +1.93 %/yr
[1910-1920] +0.69 %/yr
[1920-1930] +0.39 %/yr
[1930-1940] -0.53 %/yr
[1940-1950] -0.17 %/yr
[1950-1960] -0.19 %/yr
[1960-1970] -1.6 %/yr
[1970-1980] +0.13 %/yr
[1980-1990] -1.12 %/yr
[1990-2000] +0.03 %/yr
[2000-2005] -0.5 %/yr
[2005-2010] -0.61 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Northampton County? Visit this page: Settlements in Northampton County, VA
Population of Northampton County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 409 | 298 | 707 |
| 5 to 9 | 388 | 293 | 681 |
| 10 to 14 | 330 | 323 | 653 |
| 15 to 19 | 321 | 268 | 589 |
| 20 to 24 | 326 | 313 | 639 |
| 25 to 29 | 313 | 330 | 643 |
| 30 to 34 | 274 | 317 | 591 |
| 35 to 39 | 300 | 269 | 569 |
| 40 to 44 | 273 | 287 | 560 |
| 45 to 49 | 289 | 315 | 604 |
| 50 to 54 | 402 | 486 | 888 |
| 55 to 59 | 469 | 571 | 1,040 |
| 60 to 64 | 466 | 533 | 999 |
| 65 to 69 | 438 | 488 | 926 |
| 70 to 74 | 340 | 386 | 726 |
| 75 to 79 | 222 | 264 | 486 |
| 80 to 84 | 154 | 227 | 381 |
| 85+ | 153 | 286 | 439 |
Northampton 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 | 5237 | 5853 | 11,090 |
| WAC | 3860 | 3813 | 7,673 |
| WA | 3745 | 3721 | 7,466 |
| NHWAC | 3292 | 3450 | 6,742 |
| NHWA | 3194 | 3367 | 6,561 |
| BAC | 1982 | 2419 | 4,401 |
| NHBAC | 1939 | 2385 | 4,324 |
| BA | 1903 | 2365 | 4,268 |
| NHBA | 1867 | 2334 | 4,201 |
| H | 630 | 401 | 1,031 |
| HWAC | 568 | 363 | 931 |
| HWA | 551 | 354 | 905 |
| TOM | 130 | 93 | 223 |
| NHTOM | 110 | 84 | 194 |
| AAC | 73 | 65 | 138 |
| NHAAC | 67 | 61 | 128 |
| IAC | 69 | 45 | 114 |
| AA | 52 | 52 | 104 |
| NHAA | 51 | 50 | 101 |
| NHIAC | 52 | 41 | 93 |
| HBAC | 43 | 34 | 77 |
| HBA | 36 | 31 | 67 |
| NAC | 24 | 11 | 35 |
| IA | 20 | 15 | 35 |
| NHIA | 15 | 15 | 30 |
| HTOM | 20 | 9 | 29 |
| HNAC | 20 | 5 | 25 |
| NA | 17 | 8 | 25 |
| HNA | 17 | 5 | 22 |
| HIAC | 17 | 4 | 21 |
| HAAC | 6 | 4 | 10 |
| NHNAC | 4 | 6 | 10 |
| HIA | 5 | 0 | 5 |
| HAA | 1 | 2 | 3 |
| NHNA | 0 | 3 | 3 |
• Virginia Beach city population
36.6 mi, 
188°
• Norfolk city
31.6 mi, 
213°
• Newport News city
36.4 mi, 
244°
• Hampton city
27 mi, 
229°
• York County
26.5 mi, 
257°
• Gloucester County
33.7 mi, 
281°
• Accomack County
33.3 mi, 
15°
• Poquoson city
24.1 mi, 240°
• Lancaster County
38.6 mi, 
316°
• Mathews County
20.7 mi, 
294°
[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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