50 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 07960 | Morristown | 46,178 |
| 07054 | Parsippany | 30,139 |
| 07801 | Dover | 26,725 |
| 07869 | Randolph | 25,919 |
| 07866 | Rockaway | 22,632 |
| 07950 | Morris Plains | 21,576 |
| 07928 | Chatham | 19,667 |
| 07834 | Denville | 18,203 |
| 07405 | Butler | 17,859 |
| 07940 | Madison | 17,675 |
| 07005 | Boonton | 15,240 |
| 07828 | Budd Lake | 14,723 |
| 07853 | Long Valley | 12,360 |
| 07836 | Flanders | 12,104 |
| 07885 | Wharton | 11,864 |
| 07932 | Florham Park | 11,498 |
| 07936 | East Hanover | 11,106 |
| 07035 | Lincoln Park | 11,085 |
| 07438 | Oak Ridge | 11,045 |
| 07444 | Pompton Plains | 10,766 |
| 07034 | Lake Hiawatha | 10,406 |
| 07045 | Montville | 10,206 |
| 07945 | Mendham | 9,771 |
| 07876 | Succasunna | 9,667 |
| 07981 | Whippany | 8,908 |
| 07849 | Lake Hopatcong | 8,475 |
| 07930 | Chester | 8,205 |
| 07850 | Landing | 7,328 |
| 07058 | Pine Brook | 5,933 |
| 07082 | Towaco | 5,688 |
| 07440 | Pequannock | 4,810 |
| 07927 | Cedar Knolls | 4,754 |
| 07046 | Mountain Lakes | 4,535 |
| 07856 | Mount Arlington | 4,280 |
| 07457 | Riverdale | 4,084 |
| 07803 | Mine Hill | 3,993 |
| 07852 | Ledgewood | 3,893 |
| 07857 | Netcong | 3,543 |
| 07946 | Millington | 3,098 |
| 07933 | Gillette | 2,920 |
| 07980 | Stirling | 2,591 |
| 07847 | Kenvil | 1,769 |
| 07878 | Mount Tabor | 712 |
| 07935 | Green Village | 597 |
| 07961 | Convent Station | 342 |
| 07976 | New Vernon | 330 |
| 07970 | Mount Freedom | 262 |
| 07926 | Brookside | 72 |
| 07842 | Hibernia | 52 |
| 07870 | Schooleys Mountain | 45 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 50 ZCTAs in Morris County, New Jersey (US Census).