Frederick is a town in Weld County, Colorado, home to about 16,651 people across 15 square miles. Its ZIP code is 80530, and parts of 80504, 80514, 80516 and 80621 are in Frederick too.
Homes sold for a median of $236 per square foot in the three months ending August 2026, a balanced market.
Mostly Frederick; also Firestone
Mostly Longmont; part is in Frederick
Mostly Dacono; part is in Frederick
Mostly Erie; part is in Frederick
Mostly Fort Lupton; part is in Frederick
Each card is that ZIP code’s whole market, including any part outside Frederick. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Frederick’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)23 miles away |
|---|---|
| Closer regional airport | Rocky Mountain Metropolitan Airport (BJC)15 miles away |
| Nearest city of 250,000+ | Denver, CO24 miles away |
| Nearest city of 1 million+ | Phoenix, AZ598 miles away |
Straight-line distances from the center of Frederick; 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.
Frederick had 14,513 residents in the 2020 census, up 488% since 2000.
It’s the 48th 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 91°F in summer, and winter lows average 14°F. About 15.5 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Longmont 2 Ese, CO weather station (7 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).
24 doctors and other health care providers list an office in Frederick.
Nearest hospitals
Providers with an office here
| Specialist doctors | 2 |
|---|---|
| Dentists | 5 |
| Nurse practitioners and physician assistants | 5 |
| Mental health providers | 11 |
| Chiropractors | 1 |
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 (16 nearby)
Grocery stores (4 nearby)
Pharmacies
Libraries
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 St. Vrain Valley School District No. Re1J. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Carbon Valley AcademyFrederick | Pre-K–8 | 245 | Charter | 1.0 mi |
| Grand View ElementaryFrederick | Pre-K–5 | 446 | Public | 1.4 mi |
| Legacy Elementary SchoolFrederick | Pre-K–5 | 430 | Public | 1.1 mi |
| Spark! Discovery PreschoolFrederick | Pre-K | 274 | Public | 2.1 mi |
| Thunder Valley PK-8Frederick | Pre-K–8 | 880 | Public | 2.2 mi |
| Frederick Senior High SchoolFrederick | 9–12 | 1,491 | Public | 1.4 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 Longmont, Erie, Firestone, Fort Lupton, Broomfield, Dacono, Aristocrat Ranchettes, Mead and Brighton.
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.