Hidden Lake is a community in Boulder County, Colorado, home to about 29 people across 0.6 square miles. It has no ZIP code of its own: it’s part of 80481.
Homes sold for a median of $409 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Bark Ranch; part is in Hidden Lake
Each card is that ZIP code’s whole market, including any part outside Hidden Lake. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Hidden Lake’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)47 miles away |
|---|---|
| Closer regional airport | Rocky Mountain Metropolitan Airport (BJC)24 miles away |
| Nearest city of 250,000+ | Denver, CO40 miles away |
| Nearest city of 1 million+ | Phoenix, AZ578 miles away |
Straight-line distances from the center of Hidden Lake; 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.
Hidden Lake had 24 residents in the 2020 census, down 23% since 2010.
It’s the 455th largest of 472 towns in Colorado by population.
Boulder County grew from 21,544 residents in 1900 to 330,758 in 2020.
Boulder County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 68°F in summer, and winter lows average 12°F. About 34 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Boulder 14 W, CO weather station (3 miles away).
159,619 jobs at 12,990 businesses in Boulder County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
3 doctors and other health care providers list an office in Hidden Lake.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 1 |
|---|---|
| Mental health providers | 2 |
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.
Theaters and performance venues
Counts are within about 1 mile 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.
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Shares ZIP codes with Bark Ranch and Ward.
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.