ZIP Code 81611 — Aspen, CO
81611 is a standard (street delivery) ZIP code serving Aspen, Colorado, in Pitkin 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 81611 at a glance
| ZIP code | 81611 |
|---|---|
| Primary city | Aspen |
| State | Colorado (CO) |
| County | Pitkin FIPS 08097 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 9,068 |
| Coordinates | 39.145610, -106.748850 |
How ZIP+4 works in 81611
The four digits after the hyphen encode a delivery segment inside 81611. 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 81611 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 Aspen
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 81611.
| ZIP | City | Distance |
|---|---|---|
| 81612 | Aspen, CO | 7.7 mi |
| 81656 | Woody Creek, CO | 9.5 mi |
| 81615 | Snowmass Village, CO | 11.4 mi |
| 81642 | Meredith, CO | 14.5 mi |
| 81654 | Snowmass, CO | 15.6 mi |
| 81251 | Twin Lakes, CO | 16.7 mi |
| 81621 | Basalt, CO | 17.4 mi |
| 81225 | Crested Butte, CO | 19.7 mi |
| 81224 | Crested Butte, CO | 20.3 mi |
| 81210 | Almont, CO | 23.5 mi |
| 80461 | Leadville, CO | 25.4 mi |
| 81623 | Carbondale, CO | 25.6 mi |
Questions about 81611
What is the ZIP+4 code for 81611?
81611 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 81611, you need to look up a specific street address to get them.
What city is 81611?
81611 is assigned to Aspen, Colorado, in Pitkin 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.