Castle Rock is a town in Douglas County, Colorado, home to about 79,123 people across 34 square miles. Its ZIP codes are 80104, 80108 and 80109, and parts of 80116 are in Castle Rock too.
Homes sold for a median of $224 per square foot across 3 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Castle Rock
Mostly Castle Rock; also Castle Pines and Castle Pines Village
Mostly Castle Rock
Part is in Castle Rock, part in Franktown
Each card is that ZIP code’s whole market, including any part outside Castle Rock. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Castle Rock’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)34 miles away |
|---|---|
| Nearest city of 250,000+ | Aurora, CO23 miles away |
| Nearest city of 1 million+ | Phoenix, AZ567 miles away |
Straight-line distances from the center of Castle Rock; 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.
Castle Rock had 73,158 residents in the 2020 census, up 262% since 2000.
It’s the 15th largest of 472 towns in Colorado by population.
Douglas County grew from 3,120 residents in 1900 to 357,978 in 2020.
Douglas County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 18°F. About 17.7 inches of rain and melted snow fall in a typical year, with about 58 inches of snow.
Source: NOAA 1991–2020 climate normals, Castle Rock, CO weather station (3 miles away).
132,499 jobs at 10,563 businesses in Douglas County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
854 doctors and other health care providers list an office in Castle Rock’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 74 |
|---|---|
| Specialist doctors | 80 |
| Dentists | 60 |
| Nurse practitioners and physician assistants | 132 |
| Mental health providers | 258 |
| Physical and occupational therapists | 187 |
| Optometrists | 24 |
| Chiropractors | 39 |
| Pharmacies | 16 |
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 (32 nearby)
Grocery stores (8 nearby)
Pharmacies (4 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 4 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.
Established in 1874.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Douglas County School District No. Re 1. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Academy Charter SchoolCastle Rock | Pre-K–8 | 581 | Charter | 0.1 mi |
| American AcademyCastle Pines | Pre-K–8 | 2,803 | Charter | 5.5 mi |
| Aspen View AcademyCastle Rock | Pre-K–8 | 1,018 | Charter | 1.0 mi |
| Buffalo Ridge Elementary SchoolCastle Rock | Pre-K–5 | 524 | Public | 5.7 mi |
| Castle Rock Elementary SchoolCastle Rock | Pre-K–6 | 440 | Public | 1.3 mi |
| Clear Sky ElementaryCastle Rock | Pre-K–6 | 627 | Public | 1.8 mi |
| DC Montessori Charter SchoolCastle Rock | Pre-K–8 | 547 | Charter | 6.0 mi |
| Early Childhood CenterCastle Rock | Pre-K | 110 | Public | 1.3 mi |
| Flagstone Elementary SchoolCastle Rock | Pre-K–6 | 496 | Public | 4.5 mi |
| Meadow View Elementary SchoolCastle Rock | Pre-K–6 | 508 | Public | 2.4 mi |
| Rock Ridge Elementary SchoolCastle Rock | Pre-K–6 | 449 | Public | 3.2 mi |
| Sage Canyon ElementaryCastle Rock | Pre-K–6 | 552 | Public | 2.6 mi |
| Soaring Hawk Elementary SchoolCastle Rock | Pre-K–6 | 431 | Public | 2.3 mi |
| Timber Trail Elementary SchoolCastle Rock | Pre-K–5 | 380 | Public | 6.2 mi |
| World Compass AcademyCastle Rock | Pre-K–8 | 791 | Charter | 2.5 mi |
| Renaissance Expedition Learn Outward Bound SchoolCastle Rock | K–6 | 361 | Public | 1.4 mi |
| South Ridge Elementary An IB World SchoolCastle Rock | K–5 | 371 | Public | 1.8 mi |
| Mesa Middle SchoolCastle Rock | 6–8 | 852 | Public | 4.1 mi |
| Renaissance Secondary SchoolCastle Rock | 6–12 | 441 | Charter | 1.3 mi |
| Castle Rock Middle SchoolCastle Rock | 7–8 | 660 | Public | 2.0 mi |
| Castle View High SchoolCastle Rock | 9–12 | 1,938 | Public | 2.2 mi |
| Daniel C Oakes High School--Castle RockCastle Rock | 9–12 | 113 | Alternative Education | 1.8 mi |
| Douglas County High SchoolCastle Rock | 9–12 | 1,659 | Public | 0.8 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Brightmont Academy - Castle PinesCastle Rock | TK–12 | 37 | Nonsectarian | 3.3 mi |
| Castle Rock Christian AcademyCastle Rock | K–10 | 135 | Christian (no specific denomination) | 2.8 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Castle Pines, Castle Pines Village and Franktown.
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.