ZIP Code 01901 — Lynn, MA
01901 is a standard (street delivery) ZIP code serving Lynn, Massachusetts, 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 01901 at a glance
| ZIP code | 01901 |
|---|---|
| Primary city | Lynn |
| State | Massachusetts (MA) |
| County | Essex FIPS 25009 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,419 |
| Coordinates | 42.461250, -70.946390 |
How ZIP+4 works in 01901
The four digits after the hyphen encode a delivery segment inside 01901. 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 01901 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 Lynn
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 01901.
| ZIP | City | Distance |
|---|---|---|
| 01902 | Lynn, MA | 0.8 mi |
| 01905 | Lynn, MA | 1.4 mi |
| 01907 | Swampscott, MA | 2.2 mi |
| 01908 | Nahant, MA | 2.5 mi |
| 01904 | Lynn, MA | 2.5 mi |
| 01906 | Saugus, MA | 3.4 mi |
| 02151 | Revere, MA | 4.1 mi |
| 01970 | Salem, MA | 4.2 mi |
| 01945 | Marblehead, MA | 5 mi |
| 01960 | Peabody, MA | 5.2 mi |
| 02176 | Melrose, MA | 5.7 mi |
| 02148 | Malden, MA | 6 mi |
Questions about 01901
What is the ZIP+4 code for 01901?
01901 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 01901, you need to look up a specific street address to get them.
What city is 01901?
01901 is assigned to Lynn, Massachusetts, 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.