Last official estimated population of Essex County was 784,608 (year 2014)[1]. This was 0.246% of total US population and 8.8% of total New Jersey state population. Area of Essex County is 129.6 mi² (=335.7 km²), in this year population density was 6,052.63 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Essex County population in 2026 would be 786,528 [0].
Historical population of Essex 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] +2.27 %/yr
[1800-1810] +1.55 %/yr
[1810-1820] +1.71 %/yr
[1820-1830] +3.13 %/yr
[1830-1840] +0.63 %/yr
[1840-1850] +5.18 %/yr
[1850-1860] +2.95 %/yr
[1860-1870] +3.82 %/yr
[1870-1880] +2.82 %/yr
[1880-1890] +3.03 %/yr
[1890-1900] +3.44 %/yr
[1900-1910] +3.63 %/yr
[1910-1920] +2.43 %/yr
[1920-1930] +2.49 %/yr
[1930-1940] +0.05 %/yr
[1940-1950] +0.79 %/yr
[1950-1960] +0.19 %/yr
[1960-1970] +0.07 %/yr
[1970-1980] -0.88 %/yr
[1980-1990] -0.89 %/yr
[1990-2000] +0.18 %/yr
[2000-2005] -0.15 %/yr
[2005-2010] -0.06 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Essex County? Visit this page: Settlements in Essex County, NJ
Population of Essex County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 27371 | 26264 | 53,635 |
| 5 to 9 | 27629 | 26158 | 53,787 |
| 10 to 14 | 26844 | 26100 | 52,944 |
| 15 to 19 | 26449 | 25686 | 52,135 |
| 20 to 24 | 27776 | 27233 | 55,009 |
| 25 to 29 | 26427 | 27262 | 53,689 |
| 30 to 34 | 26192 | 28162 | 54,354 |
| 35 to 39 | 26499 | 28445 | 54,944 |
| 40 to 44 | 28162 | 29641 | 57,803 |
| 45 to 49 | 28050 | 29740 | 57,790 |
| 50 to 54 | 27932 | 29776 | 57,708 |
| 55 to 59 | 24174 | 27567 | 51,741 |
| 60 to 64 | 19104 | 22686 | 41,790 |
| 65 to 69 | 14440 | 17985 | 32,425 |
| 70 to 74 | 9710 | 12974 | 22,684 |
| 75 to 79 | 6618 | 9678 | 16,296 |
| 80 to 84 | 4586 | 7777 | 12,363 |
| 85+ | 4438 | 10188 | 14,626 |
Essex 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 | 292686 | 326839 | 619,525 |
| WAC | 203520 | 206642 | 410,162 |
| WA | 196466 | 199386 | 395,852 |
| BAC | 159798 | 186271 | 346,069 |
| BA | 153617 | 179509 | 333,126 |
| NHBAC | 145010 | 171479 | 316,489 |
| NHBA | 141545 | 167578 | 309,123 |
| NHWAC | 129372 | 135399 | 264,771 |
| NHWA | 125251 | 131119 | 256,370 |
| H | 89715 | 86483 | 176,198 |
| HWAC | 74148 | 71243 | 145,391 |
| HWA | 71215 | 68267 | 139,482 |
| AAC | 22844 | 24586 | 47,430 |
| NHAAC | 21703 | 23434 | 45,137 |
| AA | 20198 | 21911 | 42,109 |
| NHAA | 19531 | 21261 | 40,792 |
| HBAC | 14788 | 14792 | 29,580 |
| HBA | 12072 | 11931 | 24,003 |
| TOM | 8882 | 9389 | 18,271 |
| NHTOM | 5470 | 5880 | 11,350 |
| IAC | 5071 | 5311 | 10,382 |
| HTOM | 3412 | 3509 | 6,921 |
| HIAC | 3058 | 2930 | 5,988 |
| IA | 2740 | 2643 | 5,383 |
| NHIAC | 2013 | 2381 | 4,394 |
| HIA | 2001 | 1802 | 3,803 |
| HAAC | 1141 | 1152 | 2,293 |
| NAC | 1025 | 1055 | 2,080 |
| NHIA | 739 | 841 | 1,580 |
| HAA | 667 | 650 | 1,317 |
| NHNAC | 519 | 590 | 1,109 |
| NA | 498 | 484 | 982 |
| HNAC | 506 | 465 | 971 |
| HNA | 348 | 324 | 672 |
| NHNA | 150 | 160 | 310 |
• Kings County population
18.7 mi, 
124°
• Queens County
23.2 mi, 
112°
• New York County
14.5 mi, 
92°
• Bronx County
21 mi, 
78°
• Bergen County
14.9 mi, 
36°
• Hudson County
9.6 mi, 113°
• Union County
9.4 mi, 
200°
• Passaic County
17.5 mi, 
351°
• Morris County
16.5 mi, 
287°
• Richmond County
16.6 mi, 
160°
[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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