ZIP Codes in Littleton, CO
Littleton uses 10 ZIP codes, all in Arapahoe, Jefferson, Douglas Counties. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 10 Littleton ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 80120 | standard | Arapahoe | 29,725 |
| 80121 | standard | Arapahoe | 18,029 |
| 80122 | standard | Arapahoe | 32,195 |
| 80123 | standard | Jefferson | 44,549 |
| 80125 | standard | Douglas | 15,630 |
| 80126 | standard | Douglas | 44,882 |
| 80127 | standard | Jefferson | 43,494 |
| 80128 | standard | Jefferson | 36,712 |
| 80129 | standard | Douglas | 30,223 |
| 80130 | standard | Douglas | 24,719 |
Finding a ZIP+4 in Littleton
Knowing which of these 10 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Littleton street almost always have different ZIP+4 codes even though they share all five leading digits.
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