Johnstown is a town in Weld County, Colorado, home to about 18,883 people across 14 square miles. Its ZIP code is 80534, and parts of 80513 are in Johnstown too.
Homes sold for a median of $221 per square foot in the three months ending August 2026, a balanced market.
Mostly Johnstown; also Berthoud and Milliken
Mostly Berthoud; part is in Johnstown
Each card is that ZIP code’s whole market, including any part outside Johnstown. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Johnstown’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Denver International Airport (DEN)35 miles away |
|---|---|
| Nearest city of 250,000+ | Denver, CO40 miles away |
| Nearest city of 1 million+ | Phoenix, AZ612 miles away |
Straight-line distances from the center of Johnstown; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Johnstown had 17,303 residents in the 2020 census, up 352% since 2000.
It’s the 43rd largest of 472 towns in Colorado by population.
Weld County grew from 16,808 residents in 1900 to 328,981 in 2020.
Weld County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 89°F in summer, and winter lows average 13°F. About 15.7 inches of rain and melted snow fall in a typical year, with about 47 inches of snow.
Source: NOAA 1991–2020 climate normals, Loveland 2n, CO weather station (11 miles away).
101,420 jobs at 7,454 businesses in Weld County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
128 doctors and other health care providers list an office in Johnstown.
Nearest hospitals
Providers with an office here
| Primary care doctors | 24 |
|---|---|
| Specialist doctors | 11 |
| Dentists | 8 |
| Nurse practitioners and physician assistants | 37 |
| Mental health providers | 24 |
| Physical and occupational therapists | 16 |
| Optometrists | 1 |
| Chiropractors | 7 |
| Pharmacies | 7 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (8 nearby)
Grocery stores (1 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Counts are within about 2.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Weld County School District No. Re-5J, Thompson School District R-2J. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Elwell Elementary SchoolJohnstown | Pre-K–5 | 618 | Public | 0.9 mi |
| Riverview PK-8Johnstown | Pre-K–8 | 757 | Public | 4.2 mi |
| Pioneer Ridge Elementary SchoolJohnstown | K–5 | 528 | Public | 2.6 mi |
| CIVICA ColoradoMilliken | 6–12 | 157 | Charter | 5.1 mi |
| Roosevelt High SchoolJohnstown | 9–12 | 1,184 | Public | 1.1 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Berthoud, Milliken and Mead.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.