Zip Code 80031 — Westminster, CO

ZIP Code 80031 is associated with Westminster, CO, in Adams County. The listed population estimate is 35,584; estimated density is 1,627.8 people per square mile. Among records with population estimates, it ranks #8 of 20 in Adams County and #53 of 512 in CO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.875220, -105.040390)

Data MetricLocal Statistic
Postal / Zip Code80031
Primary CityWestminster
State / ProvinceCO
CountyAdams
Total Population35,584
Population Density1,627.8 people/sq mi
TimezoneAmerica/Denver

How 80031 Compares

MetricZIP 80031Adams County recordsCO records
Population estimate35,584550,721 (sum)5,862,421 (sum)
Population Density1,627.8 /sq mi----
County population rank#8 of 20----
State population rank#53 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 80260Denver1.9 mi34,677
ZIP 80030Westminster3.1 mi15,427
ZIP 80234Denver3.2 mi29,356
ZIP 80003Arvada3.6 mi35,976
ZIP 80021Broomfield4.1 mi36,555

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 →