ZIP Code 07042 — Montclair, NJ
07042 is a standard (street delivery) ZIP code serving Montclair, New Jersey, in Essex County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 07042 at a glance
| ZIP code | 07042 |
|---|---|
| Primary city | Montclair |
| State | New Jersey (NJ) |
| County | Essex FIPS 34013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 27,326 |
| Coordinates | 40.813820, -74.217750 |
How ZIP+4 works in 07042
The four digits after the hyphen encode a delivery segment inside 07042. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 07042 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Other ZIP codes in Montclair
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 07042.
| ZIP | City | Distance |
|---|---|---|
| 07028 | Glen Ridge, NJ | 1 mi |
| 07003 | Bloomfield, NJ | 1.6 mi |
| 07044 | Verona, NJ | 1.8 mi |
| 07043 | Montclair, NJ | 2.3 mi |
| 07052 | West Orange, NJ | 2.9 mi |
| 07017 | East Orange, NJ | 2.9 mi |
| 07009 | Cedar Grove, NJ | 3 mi |
| 07110 | Nutley, NJ | 3.2 mi |
| 07109 | Belleville, NJ | 3.2 mi |
| 07050 | Orange, NJ | 3.3 mi |
| 07021 | Essex Fells, NJ | 3.4 mi |
| 07012 | Clifton, NJ | 3.8 mi |
Questions about 07042
What is the ZIP+4 code for 07042?
07042 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 07042, you need to look up a specific street address to get them.
What city is 07042?
07042 is assigned to Montclair, New Jersey, in Essex County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.