ZIP Code 81233 — Howard, CO
81233 is a standard (street delivery) ZIP code serving Howard, Colorado, in Fremont 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 81233 at a glance
| ZIP code | 81233 |
|---|---|
| Primary city | Howard |
| State | Colorado (CO) |
| County | Fremont FIPS 08043 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 966 |
| Coordinates | 38.492440, -105.813690 |
How ZIP+4 works in 81233
The four digits after the hyphen encode a delivery segment inside 81233. 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 81233 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 81233.
| ZIP | City | Distance |
|---|---|---|
| 81222 | Coaldale, CO | 9.5 mi |
| 81223 | Cotopaxi, CO | 13.3 mi |
| 81242 | Poncha Springs, CO | 14.1 mi |
| 81201 | Salida, CO | 15 mi |
| 81232 | Hillside, CO | 18.6 mi |
| 81212 | Canon City, CO | 21.3 mi |
| 81155 | Villa Grove, CO | 21.8 mi |
| 80820 | Guffey, CO | 23.8 mi |
| 81143 | Moffat, CO | 24.2 mi |
| 81227 | Monarch, CO | 26 mi |
| 81236 | Nathrop, CO | 27.6 mi |
| 80449 | Hartsel, CO | 30.3 mi |
Questions about 81233
What is the ZIP+4 code for 81233?
81233 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 81233, you need to look up a specific street address to get them.
What city is 81233?
81233 is assigned to Howard, Colorado, in Fremont 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.