ZIP Code 04623 — Columbia Falls, ME
04623 is a standard (street delivery) ZIP code serving Columbia Falls, Maine, in Washington 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 04623 at a glance
| ZIP code | 04623 |
|---|---|
| Primary city | Columbia Falls |
| State | Maine (ME) |
| County | Washington FIPS 23029 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,173 |
| Coordinates | 44.707860, -67.708240 |
How ZIP+4 works in 04623
The four digits after the hyphen encode a delivery segment inside 04623. 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 04623 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 04623.
| ZIP | City | Distance |
|---|---|---|
| 04648 | Jonesboro, ME | 6.5 mi |
| 04654 | Machias, ME | 8.2 mi |
| 04606 | Addison, ME | 9 mi |
| 04643 | Harrington, ME | 10.1 mi |
| 04649 | Jonesport, ME | 11.6 mi |
| 04622 | Cherryfield, ME | 12.4 mi |
| 04658 | Milbridge, ME | 14.2 mi |
| 04630 | East Machias, ME | 15 mi |
| 04655 | Machiasport, ME | 15.7 mi |
| 04611 | Beals, ME | 16.2 mi |
| 04680 | Steuben, ME | 18.1 mi |
| 04686 | Wesley, ME | 19.2 mi |
Questions about 04623
What is the ZIP+4 code for 04623?
04623 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 04623, you need to look up a specific street address to get them.
What city is 04623?
04623 is assigned to Columbia Falls, Maine, in Washington 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.