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zipcodes.pro — CITY/CO/JOHNSTOWN

Johnstown ZIP code, Colorado

The ZIP code for Johnstown, CO is 80534, and its area code is 970.

USPS city name
1 ZIP code
Overlapping the city
4 more
Population
18,883
Area code
970

NANPA lists no telephone rate centre for Johnstown itself, so these are the area codes of the nearest one, Mead (7.5 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Johnstown uses the ZIP code above. 4 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Johnstown in numbers

About 18,883 people live in Johnstown, in 7,014 households, the 43rd-largest of Colorado's 471 census places. The median household income is $128,995 a year, 35% above the Colorado median of $95,470 (US: $80,734). The median owner-occupied home is valued at $540,300 (about the same as the Colorado median), and median gross rent is $1,835 a month. The median age is 34.9; 38.5% of adults 25 and over hold a bachelor's degree or higher (45.7% across Colorado); the average commute takes 31 minutes.

Population18,883Johnstown18,883
Households7,014Johnstown7,014
Median age34.9Johnstown34.9Colorado37.7US 38.9
Median household income$128,995Johnstown$128,995Colorado$95,470US $80,734
Median home value$540,300Johnstown$540,300Colorado$539,400US $332,700
Median gross rent$1,835Johnstown$1,835Colorado$1,761US $1,413
Bachelor's degree or higher38.5%Johnstown38.5%Colorado45.7%US 35.7%
Mean commute30.5 minJohnstown30.5 minColorado25.2 minUS 26.4 min
Population density1,212 / sq miJohnstown1,212 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Johnstown town. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Johnstown

ZIP codes with the USPS city name Johnstown
ZIP City Type Population Median income Median home
80534 Johnstown , CO Standard 20,502 $129,024 $553,300

Other ZIP codes overlapping Johnstown

These ZIP codes cover part of Johnstown but are addressed as somewhere else.

ZIP codes overlapping Johnstown
ZIP City Type Population Median income Median home
80513 Berthoud , CO Standard 18,271 $126,726 $600,600
80537 Loveland , CO Standard 44,425 $86,325 $484,300
80538 Loveland , CO Standard 50,110 $86,671 $497,700
80543 Milliken , CO Standard 9,774 $104,574 $415,700

Map of Johnstown ZIP codes

80534

The ZIP codes of Johnstown, CO, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Johnstown

The nearest larger towns are Evans (22,396 people, 9.1 mi), Greeley (110,806 people, 10 mi) and Loveland (78,410 people, 11 mi).

Towns near Johnstown
TownPopulationDistance
Milliken 8,871 2.8 mi
Berthoud 12,411 3.3 mi
Mead 5,919 6.9 mi
Platteville 2,928 7.1 mi
Evans 22,396 9.1 mi
Greeley 110,806 10.5 mi
Firestone 18,049 10.7 mi
Loveland 78,410 11.0 mi
La Salle 3,061 11.2 mi
Windsor 37,914 11.8 mi
Longmont 99,406 13.9 mi
Severance 10,130 14.0 mi
Frederick 16,651 14.3 mi
Timnath 8,941 15.9 mi

More nearby: every ZIP code in Weld County · Colorado ZIP codes

Cite this page

zipcodes.pro. “Johnstown, CO ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/co/johnstown

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