Census place · GEOID 0853780 · Boulder County
Niwot, CO ZIP codes
2 ZIP/ZCTAs intersecting this Census place (CDP) in Boulder County.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Niwot (GEOID 0853780). Methodology
Combined population of ZIP/ZCTAs intersecting this place: 36,206 (2 ZIPs).
Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology
Map of Niwot, CO

ZIP/ZCTA overlap with Niwot
Population overlap
Share of each ZIP/ZCTA’s population located within Niwot, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
ZIP codes intersecting Niwot
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 80503 | Longmont | Boulder County | 36,206 | $118,465 |
| 80544 | Niwot | Boulder County | 0 | — |
USPS associates these ZIPs with Niwot
These codes list Niwot as a primary or acceptable city. They are not used for the ACS headline.
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 80504 | Longmont | Boulder County | 61,305 | $109,671 |