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Zip Code 80540 — Lyons, CO

80540 is a ZIP Code associated with Lyons, CO, located within Boulder. The postal region supports an estimated population of 4,642 residents across Data Pending housing units, with a population density of 11.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.231860, -105.393410)

Data MetricLocal Statistic
Postal / Zip Code80540
Primary CityLyons
State / ProvinceCO
CountyBoulder
Total Population4,642
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density11.7 people/sq mi
TimezoneAmerica/Denver

How 80540 Compares

MetricZIP 80540Boulder CountyCO State Average
Population4,642285,7865,862,421
Median IncomeData PendingN/AN/A
Population Density11.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 80455Jamestown8.4 mi501N/A
Zip 80510Allenspark9.9 mi663N/A
Zip 80503Longmont10.7 mi35,846N/A
Zip 80481Ward11.2 mi484N/A
Zip 80304Boulder14.0 mi25,383N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →