ZIP Code 02171 — Quincy, MA
02171 is a standard (street delivery) ZIP code serving Quincy, Massachusetts, in Norfolk 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 02171 at a glance
| ZIP code | 02171 |
|---|---|
| Primary city | Quincy |
| State | Massachusetts (MA) |
| County | Norfolk FIPS 25021 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 20,164 |
| Coordinates | 42.287090, -71.026040 |
How ZIP+4 works in 02171
The four digits after the hyphen encode a delivery segment inside 02171. 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 02171 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 Quincy
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 02171.
| ZIP | City | Distance |
|---|---|---|
| 02122 | Dorchester, MA | 1.4 mi |
| 02170 | Quincy, MA | 1.5 mi |
| 02124 | Dorchester Center, MA | 2.3 mi |
| 02125 | Dorchester, MA | 2.5 mi |
| 02127 | South Boston, MA | 3.3 mi |
| 02169 | Quincy, MA | 3.3 mi |
| 02121 | Dorchester, MA | 3.4 mi |
| 02126 | Mattapan, MA | 3.4 mi |
| 02119 | Roxbury, MA | 4 mi |
| 02118 | Boston, MA | 4.2 mi |
| 02210 | Boston, MA | 4.3 mi |
| 02186 | Milton, MA | 4.5 mi |
Questions about 02171
What is the ZIP+4 code for 02171?
02171 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 02171, you need to look up a specific street address to get them.
What city is 02171?
02171 is assigned to Quincy, Massachusetts, in Norfolk 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.