Last official estimated population of Passaic County was 502,201 (year 2014)[1]. This was 0.158% of total US population and 5.6% of total New Jersey state population. Area of Passaic County is 198.0 mi² (=512.9 km²), in this year population density was 2,535.88 p/mi². If population growth rate would be same as in period 2010-2014 (+0.05%/yr), Passaic County population in 2026 would be 505,137 [0].
Historical population of Passaic County for period 1840-2014 [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

[1840-1850] +3.04 %/yr
[1850-1860] +2.54 %/yr
[1860-1870] +4.81 %/yr
[1870-1880] +4.02 %/yr
[1880-1890] +4.31 %/yr
[1890-1900] +3.98 %/yr
[1900-1910] +3.36 %/yr
[1910-1920] +1.84 %/yr
[1920-1930] +1.55 %/yr
[1930-1940] +0.24 %/yr
[1940-1950] +0.86 %/yr
[1950-1960] +1.89 %/yr
[1960-1970] +1.26 %/yr
[1970-1980] -0.29 %/yr
[1980-1990] +0.51 %/yr
[1990-2000] +0.4 %/yr
[2000-2005] +0.13 %/yr
[2005-2010] +0.31 %/yr
[2010-2014] +0.05 %/yr
Looking for settlements in Passaic County? Visit this page: Settlements in Passaic County, NJ
Population of Passaic County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 18075 | 17263 | 35,338 |
| 5 to 9 | 17294 | 16624 | 33,918 |
| 10 to 14 | 17531 | 16594 | 34,125 |
| 15 to 19 | 17853 | 17237 | 35,090 |
| 20 to 24 | 18378 | 18694 | 37,072 |
| 25 to 29 | 17249 | 16939 | 34,188 |
| 30 to 34 | 16698 | 16805 | 33,503 |
| 35 to 39 | 16251 | 16548 | 32,799 |
| 40 to 44 | 16370 | 17215 | 33,585 |
| 45 to 49 | 17281 | 18004 | 35,285 |
| 50 to 54 | 17610 | 18552 | 36,162 |
| 55 to 59 | 16162 | 17484 | 33,646 |
| 60 to 64 | 13065 | 14335 | 27,400 |
| 65 to 69 | 10092 | 12081 | 22,173 |
| 70 to 74 | 6861 | 8746 | 15,607 |
| 75 to 79 | 4784 | 6378 | 11,162 |
| 80 to 84 | 3208 | 5072 | 8,280 |
| 85+ | 3119 | 6404 | 9,523 |
Passaic 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 | 194066 | 200719 | 394,785 |
| WA | 188542 | 195046 | 383,588 |
| NH | 148045 | 159345 | 307,390 |
| NHWAC | 109170 | 114251 | 223,421 |
| NHWA | 106725 | 111817 | 218,542 |
| H | 99836 | 101630 | 201,466 |
| HWAC | 84896 | 86468 | 171,364 |
| HWA | 81817 | 83229 | 165,046 |
| BAC | 38907 | 44619 | 83,526 |
| BA | 35003 | 40424 | 75,427 |
| NHBAC | 26278 | 31540 | 57,818 |
| NHBA | 24797 | 29974 | 54,771 |
| AAC | 15504 | 16521 | 32,025 |
| NHAAC | 14373 | 15330 | 29,703 |
| AA | 13912 | 14990 | 28,902 |
| NHAA | 13223 | 14243 | 27,466 |
| HBAC | 12629 | 13079 | 25,708 |
| HBA | 10206 | 10450 | 20,656 |
| TOM | 6148 | 6315 | 12,463 |
| IAC | 5421 | 5309 | 10,730 |
| HIAC | 4370 | 4218 | 8,588 |
| IA | 3797 | 3671 | 7,468 |
| HTOM | 3289 | 3491 | 6,780 |
| HIA | 3412 | 3243 | 6,655 |
| NHTOM | 2859 | 2824 | 5,683 |
| HAAC | 1131 | 1191 | 2,322 |
| NHIAC | 1051 | 1091 | 2,142 |
| NAC | 735 | 775 | 1,510 |
| HAA | 689 | 747 | 1,436 |
| HNAC | 547 | 579 | 1,126 |
| NA | 479 | 529 | 1,008 |
| HNA | 423 | 470 | 893 |
| NHIA | 385 | 428 | 813 |
| NHNAC | 188 | 196 | 384 |
| NHNA | 56 | 59 | 115 |
• New York County population
24.9 mi,
136°
• Bronx County
26.7 mi,
119°
• Bergen County
12.8 mi,
114°
• Essex County
17.5 mi,
171°
• Hudson County
24.1 mi,
151°
• Union County
26.1 mi,
181°
• Morris County
18 mi,
226°
• Orange County
25.2 mi,
359°
• Rockland County
16.4 mi,
60°
• Sussex County
21.6 mi,
288°
[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
*Essex, Bergen New Jersey Notes
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