ZIP Code 04862 — Union, ME
04862 is a standard (street delivery) ZIP code serving Union, Maine, in Knox 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 04862 at a glance
| ZIP code | 04862 |
|---|---|
| Primary city | Union |
| State | Maine (ME) |
| County | Knox FIPS 23013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 4,023 |
| Coordinates | 44.261860, -69.277030 |
How ZIP+4 works in 04862
The four digits after the hyphen encode a delivery segment inside 04862. 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 04862 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.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 04862.
| ZIP | City | Distance |
|---|---|---|
| 04847 | Hope, ME | 4.4 mi |
| 04574 | Washington, ME | 5.7 mi |
| 04949 | Liberty, ME | 7.9 mi |
| 04973 | Searsmont, ME | 8.1 mi |
| 04864 | Warren, ME | 9.3 mi |
| 04843 | Camden, ME | 9.5 mi |
| 04856 | Rockport, ME | 9.7 mi |
| 04572 | Waldoboro, ME | 11.4 mi |
| 04348 | Jefferson, ME | 11.4 mi |
| 04841 | Rockland, ME | 11.6 mi |
| 04354 | Palermo, ME | 11.9 mi |
| 04849 | Lincolnville, ME | 12 mi |
Questions about 04862
What is the ZIP+4 code for 04862?
04862 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 04862, you need to look up a specific street address to get them.
What city is 04862?
04862 is assigned to Union, Maine, in Knox 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.