ZIP Code 81073 — Springfield, CO
81073 is a standard (street delivery) ZIP code serving Springfield, Colorado, in Baca 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 81073 at a glance
| ZIP code | 81073 |
|---|---|
| Primary city | Springfield |
| State | Colorado (CO) |
| County | Baca FIPS 08009 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 1,865 |
| Coordinates | 37.424140, -102.714960 |
How ZIP+4 works in 81073
The four digits after the hyphen encode a delivery segment inside 81073. 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 81073 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 81073.
| ZIP | City | Distance |
|---|---|---|
| 81087 | Vilas, CO | 16.7 mi |
| 81084 | Two Buttes, CO | 19.1 mi |
| 81064 | Pritchett, CO | 19.8 mi |
| 81029 | Campo, CO | 26.4 mi |
| 81090 | Walsh, CO | 27.2 mi |
| 81041 | Granada, CO | 34.2 mi |
| 81044 | Hasty, CO | 35.2 mi |
| 81054 | Las Animas, CO | 41.3 mi |
Questions about 81073
What is the ZIP+4 code for 81073?
81073 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 81073, you need to look up a specific street address to get them.
What city is 81073?
81073 is assigned to Springfield, Colorado, in Baca 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.