Zip Code 80534 — Johnstown, CO

ZIP Code 80534 is associated with Johnstown, CO, in Weld County. The listed population estimate is 20,502; estimated density is 164.7 people per square mile. Among records with population estimates, it ranks #7 of 34 in Weld County and #120 of 512 in CO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.331920, -104.935220)

Data MetricLocal Statistic
Postal / Zip Code80534
Primary CityJohnstown
State / ProvinceCO
CountyWeld
Total Population20,502
Population Density164.7 people/sq mi
TimezoneAmerica/Denver

How 80534 Compares

MetricZIP 80534Weld County recordsCO records
Population estimate20,502396,054 (sum)5,862,421 (sum)
Population Density164.7 /sq mi----
County population rank#7 of 34----
State population rank#120 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 80543Milliken4.4 mi9,774
ZIP 80542Mead7.5 mi5,155
ZIP 80623Gilcrest8.7 mi1,026
ZIP 80634Greeley8.9 mi65,622
ZIP 80651Platteville9.1 mi4,837

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 →