New Castle, CO ZIP Codes
One ZIP code serves New Castle, Colorado: 81647. Together they are home to 6,882 residents in 2,720 households. That is more than the 4,880 people counted inside New Castle town limits, because these ZIP codes reach past its boundary.
New Castle town limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 4,880 |
| Households | 2,027 |
| Median household income | $80,084 |
| Median home value | $454,300 |
| Median age | 38.7 |
| Median rent | $1,393 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 6,882 |
| Households (sum of ZIP codes) | 2,720 |
| Median household income, range across ZIP codes | $78,352 (81647) to $78,352 (81647) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $78,352 |
| Homeowners | 75.0% |
| Households with kids under 18 | 30.5% |
| Moved in the past year | 13.1% |
| Carrier routes in EDDM2GO's route library | not loaded yet |
Every ZIP code in New Castle
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 81647 | New Castle | 6,882 | 2,720 | $78,352 | $456,200 | 75.0% | 30.5% | 13.1% | — | — | 1% of its land; mailing city |
A ZIP code is listed for New Castle when at least 10% of its land lies inside New Castle town limits, when it holds at least 10% of the place's land, or when its USPS mailing city is New Castle. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside New Castle.
Counties
- Garfield County — 8 ZIP codes
Price a mailing to New Castle ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in New Castle, CO?
- 81647. A ZIP code is listed for New Castle when at least 10% of its land lies inside New Castle town limits, when it holds at least 10% of the place's land, or when its USPS mailing city is New Castle.
- What is the population of New Castle, CO?
- The Census Bureau counts 4,880 residents inside New Castle town limits (ACS 2020–2024). The 1 ZIP code that serve New Castle hold 6,882 residents in all.
- What is the median household income in New Castle, CO?
- $80,084 inside New Castle town limits, per the Census Bureau. Across its ZIP codes the medians run from $78,352 to $78,352.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.