Zip Code 80027 — Louisville, CO

ZIP Code 80027 is associated with Louisville, CO, in Boulder County. The listed population estimate is 34,127; estimated density is 707.4 people per square mile. Among records with population estimates, it ranks #3 of 16 in Boulder County and #60 of 512 in CO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.950800, -105.163540)

Data MetricLocal Statistic
Postal / Zip Code80027
Primary CityLouisville
State / ProvinceCO
CountyBoulder
Total Population34,127
Population Density707.4 people/sq mi
TimezoneAmerica/Denver

How 80027 Compares

MetricZIP 80027Boulder County recordsCO records
Population estimate34,127285,786 (sum)5,862,421 (sum)
Population Density707.4 /sq mi----
County population rank#3 of 16----
State population rank#60 of 512----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in CO

ZIP CodeCityDistancePopulation estimate
ZIP 80303Boulder3.0 mi24,996
ZIP 80305Boulder4.9 mi16,291
ZIP 80021Broomfield4.9 mi36,555
ZIP 80020Broomfield4.9 mi54,201
ZIP 80026Lafayette5.4 mi32,701

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 →