Last official estimated population of Hunterdon County was 127,343 (year 2014)[1]. This was 0.04% of total US population and 1.4% of total New Jersey state population. Area of Hunterdon County is 437.4 mi² (=1133 km²), in this year population density was 291.10 p/mi². If population growth rate would be same as in period 2010-2014 (-0.2%/yr), Hunterdon County population in 2026 would be 124,372 [0].
Historical population of Hunterdon 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] +0.54 %/yr
[1800-1810] +1.45 %/yr
[1810-1820] +1.54 %/yr
[1820-1830] +0.83 %/yr
[1830-1840] -2.23 %/yr
[1840-1850] +1.58 %/yr
[1850-1860] +1.5 %/yr
[1860-1870] +0.94 %/yr
[1870-1880] +0.43 %/yr
[1880-1890] -0.87 %/yr
[1890-1900] -0.24 %/yr
[1900-1910] -0.28 %/yr
[1910-1920] -0.21 %/yr
[1920-1930] +0.55 %/yr
[1930-1940] +0.57 %/yr
[1940-1950] +1.52 %/yr
[1950-1960] +2.39 %/yr
[1960-1970] +2.57 %/yr
[1970-1980] +2.28 %/yr
[1980-1990] +2.13 %/yr
[1990-2000] +1.25 %/yr
[2000-2005] +0.96 %/yr
[2005-2010] +0.04 %/yr
[2010-2014] -0.2 %/yr
Looking for settlements in Hunterdon County? Visit this page: Settlements in Hunterdon County, NJ
Population of Hunterdon County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2553 | 2374 | 4,927 |
| 5 to 9 | 3534 | 3328 | 6,862 |
| 10 to 14 | 4557 | 4404 | 8,961 |
| 15 to 19 | 4692 | 4410 | 9,102 |
| 20 to 24 | 4262 | 3145 | 7,407 |
| 25 to 29 | 2651 | 2452 | 5,103 |
| 30 to 34 | 2630 | 2729 | 5,359 |
| 35 to 39 | 2904 | 3157 | 6,061 |
| 40 to 44 | 3815 | 4366 | 8,181 |
| 45 to 49 | 5126 | 5918 | 11,044 |
| 50 to 54 | 6208 | 6367 | 12,575 |
| 55 to 59 | 5871 | 5871 | 11,742 |
| 60 to 64 | 4520 | 4428 | 8,948 |
| 65 to 69 | 3358 | 3489 | 6,847 |
| 70 to 74 | 2358 | 2497 | 4,855 |
| 75 to 79 | 1382 | 1559 | 2,941 |
| 80 to 84 | 974 | 1377 | 2,351 |
| 85+ | 883 | 1918 | 2,801 |
Hunterdon 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 | 58283 | 60005 | 118,288 |
| WAC | 57934 | 59415 | 117,349 |
| WA | 57245 | 58736 | 115,981 |
| NHWAC | 54343 | 55910 | 110,253 |
| NHWA | 53761 | 55314 | 109,075 |
| H | 3995 | 3784 | 7,779 |
| HWAC | 3591 | 3505 | 7,096 |
| HWA | 3484 | 3422 | 6,906 |
| AAC | 2580 | 2900 | 5,480 |
| NHAAC | 2514 | 2849 | 5,363 |
| AA | 2189 | 2522 | 4,711 |
| NHAA | 2148 | 2496 | 4,644 |
| BAC | 2140 | 1839 | 3,979 |
| BA | 1873 | 1572 | 3,445 |
| NHBAC | 1805 | 1614 | 3,419 |
| NHBA | 1605 | 1398 | 3,003 |
| TOM | 779 | 759 | 1,538 |
| NHTOM | 658 | 663 | 1,321 |
| IAC | 304 | 277 | 581 |
| HBAC | 335 | 225 | 560 |
| HBA | 268 | 174 | 442 |
| NHIAC | 194 | 192 | 386 |
| NAC | 117 | 135 | 252 |
| IA | 125 | 112 | 237 |
| HTOM | 121 | 96 | 217 |
| NHNAC | 100 | 114 | 214 |
| HIAC | 110 | 85 | 195 |
| NA | 67 | 88 | 155 |
| NHNA | 59 | 77 | 136 |
| HIA | 73 | 55 | 128 |
| HAAC | 66 | 51 | 117 |
| NHIA | 52 | 57 | 109 |
| HAA | 41 | 26 | 67 |
| HNAC | 17 | 21 | 38 |
| HNA | 8 | 11 | 19 |
• Middlesex County population
27.9 mi,
108°
• Montgomery County
34.4 mi,
224°
• Bucks County
18.8 mi,
213°
• Union County
32.3 mi,
78°
• Morris County
27.8 mi,
43°
• Mercer County
22.4 mi,
150°
• Lehigh County
35.8 mi,
275°
• Somerset County
15.3 mi,
89°
• Northampton County
24.4 mi,
302°
• Warren County
20.6 mi,
345°
[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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