Last official estimated population of Sussex County was 148,770 (year 2014)[1]. This was 0.047% of total US population and 1.7% of total New Jersey state population. Area of Sussex County is 534.8 mi² (=1385.2 km²), in this year population density was 278.16 p/mi². If population growth rate would be same as in period 2010-2014 (-0.08%/yr), Sussex County population in 2026 would be 147,295 [0].
Historical population of Sussex 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] +1.46 %/yr
[1800-1810] +1.26 %/yr
[1810-1820] +2.51 %/yr
[1820-1830] -4.65 %/yr
[1830-1840] +0.68 %/yr
[1840-1850] +0.55 %/yr
[1850-1860] +0.37 %/yr
[1860-1870] -0.29 %/yr
[1870-1880] +0.16 %/yr
[1880-1890] -0.56 %/yr
[1890-1900] +0.81 %/yr
[1900-1910] +1.05 %/yr
[1910-1920] -0.72 %/yr
[1920-1930] +1.12 %/yr
[1930-1940] +0.63 %/yr
[1940-1950] +1.51 %/yr
[1950-1960] +3.65 %/yr
[1960-1970] +4.64 %/yr
[1970-1980] +4.12 %/yr
[1980-1990] +1.21 %/yr
[1990-2000] +0.98 %/yr
[2000-2005] +0.8 %/yr
[2005-2010] -0.12 %/yr
[2010-2014] -0.08 %/yr
Looking for settlements in Sussex County? Visit this page: Settlements in Sussex County, NJ
Population of Sussex County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 3432 | 3238 | 6,670 |
| 5 to 9 | 4163 | 4050 | 8,213 |
| 10 to 14 | 4945 | 4842 | 9,787 |
| 15 to 19 | 5164 | 4860 | 10,024 |
| 20 to 24 | 4657 | 4186 | 8,843 |
| 25 to 29 | 3729 | 3277 | 7,006 |
| 30 to 34 | 3554 | 3537 | 7,091 |
| 35 to 39 | 3767 | 3919 | 7,686 |
| 40 to 44 | 4728 | 4949 | 9,677 |
| 45 to 49 | 5892 | 6220 | 12,112 |
| 50 to 54 | 6689 | 6844 | 13,533 |
| 55 to 59 | 6259 | 6408 | 12,667 |
| 60 to 64 | 5126 | 5078 | 10,204 |
| 65 to 69 | 3863 | 4053 | 7,916 |
| 70 to 74 | 2603 | 2738 | 5,341 |
| 75 to 79 | 1559 | 1765 | 3,324 |
| 80 to 84 | 938 | 1284 | 2,222 |
| 85+ | 877 | 1716 | 2,593 |
Sussex 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 |
| WAC | 68704 | 69662 | 138,366 |
| WA | 67755 | 68682 | 136,437 |
| NH | 66731 | 67629 | 134,360 |
| NHWAC | 63842 | 64638 | 128,480 |
| NHWA | 63025 | 63804 | 126,829 |
| H | 5214 | 5335 | 10,549 |
| HWAC | 4862 | 5024 | 9,886 |
| HWA | 4730 | 4878 | 9,608 |
| BAC | 2033 | 1888 | 3,921 |
| AAC | 1760 | 2001 | 3,761 |
| NHAAC | 1708 | 1941 | 3,649 |
| NHBAC | 1742 | 1631 | 3,373 |
| BA | 1644 | 1472 | 3,116 |
| AA | 1321 | 1553 | 2,874 |
| NHAA | 1290 | 1519 | 2,809 |
| NHBA | 1432 | 1299 | 2,731 |
| TOM | 1032 | 1073 | 2,105 |
| NHTOM | 883 | 915 | 1,798 |
| IAC | 425 | 436 | 861 |
| NHIAC | 284 | 295 | 579 |
| HBAC | 291 | 257 | 548 |
| HBA | 212 | 173 | 385 |
| IA | 168 | 158 | 326 |
| HTOM | 149 | 158 | 307 |
| HIAC | 141 | 141 | 282 |
| HIA | 83 | 84 | 167 |
| NHIA | 85 | 74 | 159 |
| NAC | 75 | 84 | 159 |
| NHNAC | 54 | 66 | 120 |
| HAAC | 52 | 60 | 112 |
| HAA | 31 | 34 | 65 |
| NA | 25 | 26 | 51 |
| HNAC | 21 | 18 | 39 |
| NHNA | 16 | 18 | 34 |
| HNA | 9 | 8 | 17 |
• Bergen County population
34.4 mi, 
110°
• Essex County
33.5 mi, 
136°
• Union County
38.6 mi, 
148°
• Passaic County
21.6 mi, 108°
• Morris County
20.7 mi, 
158°
• Orange County
27.1 mi, 
47°
• Rockland County
34.7 mi, 
88°
• Monroe County
33.6 mi, 
260°
• Warren County
25.7 mi, 
220°
• Pike County
21.9 mi, 
306°
[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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