New Castle Colorado ZIP Codes
New Castle holds a single ZIP code.
Every ZIP code in New Castle
| ZIP code | County |
|---|---|
| 81647 | Garfield County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the New Castle codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for New Castle. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every New Castle ZIP code begins 816. Those first three digits identify the sectional center facility that processes mail for this part of Colorado. Statewide that range covers 38 ZIP codes, so New Castle accounts for 3% of it.
Every Colorado ZIP prefix and the region it covers →
Area codes covering New Castle
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground New Castle occupies.
New Castle Colorado area codes in full →
Where New Castle's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near New Castle
| City | Distance | ZIP codes |
|---|---|---|
| Silt Colorado ZIP codes | 7.0 mi | 1 ZIP code |
| Glenwood Springs Colorado ZIP codes | 10 mi | 2 ZIP codes |
| Rifle Colorado ZIP codes | 13 mi | 1 ZIP code |
| Carbondale Colorado ZIP codes | 21 mi | 1 ZIP code |
| Basalt Colorado ZIP codes | 29 mi | 1 ZIP code |
| Parachute Colorado ZIP codes | 29 mi | 1 ZIP code |
| Gypsum Colorado ZIP codes | 31 mi | 1 ZIP code |
| Collbran Colorado ZIP codes | 33 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.