90 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Parsippany-Troy Hills | 1 | 56,809 | 56,024 | 0.14% | 2,404 | 24 | Township |
| Mount Olive | 2 | 29,558 | 28,815 | 0.2% | 998 | 30 | Township |
| Parsippany | 3 | 27,258 | 20,439 | 7.15% | 4,479 | 6 | CDP |
| Rockaway | 4 | 27,247 | 25,360 | 1.32% | 653 | 42 | Township |
| Randolph | 5 | 26,856 | 26,430 | 0.28% | 1,285 | 21 | Township |
| Montville | 6 | 26,277 | 22,392 | 7.45% | 1,411 | 19 | Township |
| Morris | 7 | 23,795 | 23,009 | 0.29% | 1,517 | 16 | Township |
| Roxbury | 8 | 23,437 | 23,020 | 0.17% | 1,124 | 21 | Township |
| Morristown | 9 | 20,884 | 20,121 | 0.73% | 7,179 | 3 | Town |
| Morristown | 10 | 20,767 | 20,121 | 0.17% | 7,139 | 3 | Town |
| Jefferson | 11 | 20,744 | 20,485 | 0.19% | 532 | 39 | Township |
| Dover | 12 | 19,271 | 18,406 | 1.91% | 7,201 | 3 | Town |
| Dover | 13 | 19,034 | 18,406 | 0.66% | 7,113 | 3 | Town |
| Denville | 14 | 17,469 | 17,098 | 0.54% | 1,457 | 12 | Township |
| Madison | 15 | 16,578 | 16,902 | 0.14% | 3,845 | 4 | Borough |
| Madison | 16 | 16,468 | 16,902 | -0.53% | 3,819 | 4 | Borough |
| Pequannock | 17 | 15,779 | 15,539 | 0.24% | 2,330 | 7 | Township |
| Hanover | 18 | 15,443 | 14,644 | 2.32% | 1,469 | 11 | Township |
| Florham Park | 19 | 15,012 | 12,615 | 3.3% | 2,053 | 7 | Borough |
| Florham Park | 20 | 14,888 | 12,615 | 2.44% | 2,036 | 7 | Borough |
| Pompton Plains | 21 | 13,676 | 10,542 | 7.15% | 2,641 | 5 | CDP |
| The Hills | 22 | 13,671 | 11,002 | 7.14% | 4,822 | 3 | CDP |
| Lake Hopatcong | 23 | 13,100 | 10,301 | 7.14% | 1,774 | 7 | CDP |
| Lake Hiawatha | 24 | 12,580 | 9,220 | 7.15% | 11,395 | 1 | CDP |
| Flanders | 25 | 11,455 | 8,744 | 7.15% | 1,543 | 7 | CDP |
| Chatham | 26 | 11,366 | 10,969 | 0.73% | 1,252 | 9 | Township |
| East Hanover | 27 | 11,251 | 11,085 | 0.17% | 1,429 | 8 | Township |
| Whippany | 28 | 11,110 | 8,780 | 7.15% | 1,981 | 6 | CDP |
| Lincoln Park | 29 | 11,066 | 10,885 | 0.33% | 1,730 | 6 | Borough |
| Lincoln Park | 30 | 11,043 | 10,885 | 0.12% | 1,726 | 6 | Borough |
| Chatham | 31 | 10,792 | 9,191 | 7.26% | 4,606 | 2 | Borough |
| Chatham | 32 | 10,279 | 9,191 | 2.16% | 4,387 | 2 | Borough |
| Budd Lake | 33 | 10,237 | 10,444 | 0.84% | 1,880 | 5 | CDP |
| Kinnelon | 34 | 10,148 | 9,947 | 0.4% | 562 | 18 | Borough |
| Kinnelon | 35 | 10,137 | 9,947 | 0.29% | 562 | 18 | Borough |
| Succasunna | 36 | 10,006 | 9,367 | 0.57% | 1,705 | 6 | CDP |
| White Meadow Lake | 37 | 9,320 | 9,166 | 0.34% | 2,586 | 4 | CDP |
| Boonton | 38 | 8,918 | 8,796 | 0.27% | 3,808 | 2 | Town |
| Boonton | 39 | 8,907 | 8,796 | 0.15% | 3,803 | 2 | Town |
| Long Hill | 40 | 8,715 | 8,602 | 0.26% | 739 | 12 | Township |
| Butler | 41 | 8,239 | 8,022 | 0.52% | 4,051 | 2 | Borough |
| Butler | 42 | 8,213 | 8,022 | 0.21% | 4,038 | 2 | Borough |
| Chester | 43 | 7,796 | 7,702 | 0.26% | 268 | 29 | Township |
| Pine Brook | 44 | 7,684 | 5,717 | 7.14% | 2,429 | 3 | CDP |
| Wharton | 45 | 7,492 | 7,251 | 0.64% | 3,604 | 2 | Borough |
| Wharton | 46 | 7,491 | 7,251 | 0.63% | 3,603 | 2 | Borough |
| Towaco | 47 | 6,941 | 5,244 | 7.15% | 1,157 | 6 | CDP |
| Morris Plains | 48 | 6,704 | 6,132 | 1.73% | 2,625 | 3 | Borough |
| Rockaway | 49 | 6,668 | 6,582 | 0.26% | 3,212 | 2 | Borough |
| Rockaway | 50 | 6,663 | 6,582 | 0.18% | 3,210 | 2 | Borough |
| Morris Plains | 51 | 6,601 | 6,132 | 0.17% | 2,585 | 3 | Borough |
| Troy Hills | 52 | 6,507 | 4,752 | 7.13% | 2,261 | 3 | CDP |
| Ledgewood | 53 | 6,387 | 5,341 | 7.13% | 1,154 | 6 | CDP |
| Mendham | 54 | 6,072 | 6,010 | 0.25% | 341 | 18 | Township |
| Landing | 55 | 6,001 | 4,456 | 7.14% | 2,812 | 2 | CDP |
| Mount Arlington | 56 | 5,999 | 5,898 | 0.33% | 2,801 | 2 | Borough |
| Mount Arlington | 57 | 5,990 | 5,898 | 0.18% | 2,796 | 2 | Borough |
| Cedar Knolls | 58 | 5,226 | 4,250 | 7.13% | 2,542 | 2 | CDP |
| Beattystown | 59 | 5,162 | 4,550 | 0.8% | 1,705 | 3 | CDP |
| Mendham | 60 | 5,010 | 4,957 | 0.2% | 845 | 6 | Borough |
| Mendham | 61 | 5,010 | 4,957 | 0.2% | 845 | 6 | Borough |
| Mountain Lakes | 62 | 4,689 | 4,462 | 0.97% | 1,773 | 3 | Borough |
| Mountain Lakes | 63 | 4,652 | 4,462 | 0.17% | 1,759 | 3 | Borough |
| Boonton | 64 | 4,478 | 4,376 | 0.4% | 551 | 8 | Township |
| Mine Hill | 65 | 4,311 | 4,004 | 3.36% | 1,468 | 3 | Township |
| Netcong | 66 | 4,162 | 3,367 | 6.04% | 5,002 | 1 | Borough |
| Riverdale | 67 | 4,152 | 4,099 | 0.24% | 2,049 | 2 | Borough |
| Riverdale | 68 | 4,151 | 4,099 | 0.22% | 2,049 | 2 | Borough |
| Netcong | 69 | 4,064 | 3,367 | 3.54% | 4,885 | 1 | Borough |
| Harding | 70 | 3,955 | 3,873 | 0.48% | 197 | 20 | Township |
| Stirling | 71 | 3,922 | 2,700 | 7.13% | 1,678 | 2 | CDP |
| Mount Hope | 72 | 3,865 | 3,249 | 7.15% | 1,758 | 2 | CDP |
| Millington | 73 | 3,675 | 3,165 | 7.14% | 1,412 | 3 | CDP |
| Gillette | 74 | 3,190 | 2,635 | 7.15% | 738 | 4 | CDP |
| Peapack Gladstone | 75 | 2,614 | 2,553 | 0.46% | 456 | 6 | Borough |
| Long Valley | 76 | 2,088 | 2,327 | 0.68% | 457 | 5 | CDP |
| Chester | 77 | 1,701 | 1,670 | 0.35% | 1,068 | 2 | Borough |
| Chester | 78 | 1,701 | 1,670 | 0.35% | 1,068 | 2 | Borough |
| Brookside | 79 | 1,628 | 1,399 | 7.18% | 677 | 2 | CDP |
| Victory Gardens | 80 | 1,600 | 1,579 | 0.25% | 11,034 | 0 | Borough |
| Victory Gardens | 81 | 1,599 | 1,579 | 0.19% | 11,028 | 0 | Borough |
| Green Village | 82 | 1,552 | 949 | 7.11% | 662 | 2 | CDP |
| Rainbow Lakes | 83 | 1,484 | 1,276 | 7.15% | 1,353 | 1 | CDP |
| Mount Tabor | 84 | 1,395 | 765 | 7.14% | 3,623 | 0 | CDP |
| Lake Telemark | 85 | 1,312 | 1,133 | 0.23% | 617 | 2 | CDP |
| Kenvil | 86 | 1,293 | 1,934 | -8.1% | 1,090 | 1 | CDP |
| Port Morris | 87 | 1,196 | 949 | 7.17% | 4,862 | 0 | CDP |
| New Vernon | 88 | 1,086 | 851 | 7.1% | 306 | 4 | CDP |
| Lower Berkshire Valley | 89 | 589 | 511 | 7.09% | 584 | 1 | CDP |
| Hibernia | 90 | 21 | 86 | 5% | 10 | 2 | CDP |
Parsippany-Troy Hills is the largest city in Morris County, with a population of 56,809.
Hibernia is the smallest city in Morris County, with a population of 21.
There are 90 cities in Morris County, New Jersey.