Welcome to Castle Rock ...

The town of Castle Rock is located in Douglas County<1> and is the County Seat for Douglas County.

While we don't have a date for the founding of Castle Rock, you might get a feel for it by knowing that during our research the earliest mention that we found (so far) was in a book dated 1895.

From Place Names in Colorado,<2> the origin of Castle Rock is described as "Named for a nearby castlelike rock formation."

From the  Census Estimates for 2019, Castle Rock has a population of 67,738 people<3> (see below for details).

Castle Rock is 6,300 feet [1,920 m] above sea level.<4> In other words, the altitude of Castle Rock is about 1¼ mile [or ~2 km] above sea level.

Time Zone: Castle Rock lies in the Mountain Time Zone (MST/MDT) and observes daylight saving time

Telephone area codes for Castle Rock: (303) and (720)<5>

The ZIP code for Castle Rock: 80104<6>

Websites for Castle Rock ...

Official Website: www.townofcastlerock.org/

Population Details ...

Taken from the 2019 Census Estimates, Castle Rock had an population of 67,738 people. This is an increase of 40.44% since the 2010 Census (or an increase of 234.94% since the 2000 Census).

At the time of the 2010 Census, Castle Rock had a population of 48,231 people (which is 16.9% of the total population of Douglas County). This makes Castle Rock the county's most populous community.

The population of Castle Rock represents 0.96% of the total population of Colorado (which has 5,029,196 people), making it the state's 17th most populous community.

With a 2010 count of 48,231 people, the population of Castle Rock increased 138.48% from the 2000 Census (with a count of 20,224 people).

More information can be found on the Census Page for Castle Rock.

Communities Also Named Castle Rock ...

Using our Gazetteer, we found that there are 15 communities that are also named Castle Rock - they are located in British Columbia, Georgia, Kansas (2), Minnesota, Missouri (2), Montana, Nevada, Oregon, Pennsylvania, South Dakota, Utah, Virginia and Washington.

For more information, see our Tidbits & Trivia Page for Castle Rock.

Communities near Castle Rock ...

We have created a list of 10 communities that are near Castle Rock.

• Centennial
  (14 miles [22.5 km] to the north)
  • Jump to our Gazetteer entry for Centennial
  • Centennial is located in Arapahoe County
  • Population from the 2020 Census: 110,156 people
  • Jump to TripAdvisor's Tourism page for Centennial <7>
• Parker
  (11 miles [17.7 km] to the northeast)
  • Jump to our Gazetteer entry for Parker
  • Parker is located in Douglas County
  • Population from the 2020 Census: 58,673 people
  • Jump to TripAdvisor's Tourism page for Parker <7>
• Littleton
  (18 miles [29 km] to the northwest)
  • Jump to our Gazetteer entry for Littleton
  • Littleton is located in Arapahoe County
  • Population from the 2020 Census: 46,000 people
  • Jump to TripAdvisor's Tourism page for Littleton <7>
• Englewood
  (19 miles [30.6 km] to the north)
  • Jump to our Gazetteer entry for Englewood
  • Englewood is located in Arapahoe County
  • Population from the 2020 Census: 35,099 people
  • Jump to TripAdvisor's Tourism page for Englewood <7>
• Greenwood Village
  (16 miles [25.7 km] to the north)
  • Note: The GPS coordinates that we are using for Greenwood Village have been provided by the GNIS.<8> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Greenwood Village
  • Greenwood Village is located in Arapahoe County
  • Population from the 2020 Census: 14,907 people
  • Jump to TripAdvisor's Tourism page for Greenwood Village <7>
• Lone Tree
  (10 miles [16.1 km] to the north)
  • Note: The GPS coordinates that we are using for Lone Tree have been provided by the GNIS.<8> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Lone Tree
  • Lone Tree is located in Douglas County
  • Population from the 2020 Census: 13,614 people
  • Jump to TripAdvisor's Tourism page for Lone Tree <7>
• Castle Pines
  (6 miles [9.7 km] to the north)
  • Note: The GPS coordinates that we are using for Castle Pines have been provided by the GNIS.<8> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Castle Pines
  • Castle Pines is located in Douglas County
  • Jump to TripAdvisor's Tourism page for Castle Pines <7>
• Castle Pines North
  (7 miles [11.3 km] to the north)
  • Note: The GPS coordinates that we are using for Castle Pines North have been provided by the GNIS.<8> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Castle Pines North
  • Castle Pines North is located in Douglas County
  • Estimated population in 2011: 10,602 people
• Monument
  (19 miles [30.6 km] to the south)
  • Jump to our Gazetteer entry for Monument
  • Monument is located in El Paso County
  • Population from the 2020 Census: 8,152 people
  • Jump to TripAdvisor's Tourism page for Monument <7>
• Cherry Hills Village
  (19 miles [30.6 km] to the north)
  • Jump to our Gazetteer entry for Cherry Hills Village
  • Cherry Hills Village is located in Arapahoe County
  • Population from the 2020 Census: 6,620 people
  • Jump to TripAdvisor's Tourism page for Cherry Hills Village <7>

To Help With Your Genealogy Research ...

We have a couple of sections for those tracing their genealogy.

We created a list of cemeteries that are in the area around Castle Rock. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Castle Rock.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Castle Rock. Our list includes information such as whether the 1895 community had a post office or railroad service. See our List of 1890's Communities around Castle Rock.

We also have a detailed list of newspapers that have been published in the area around Castle Rock. Our list includes 17 papers. See our Newspapers Page for Castle Rock.

TripAdvisor Tourism Pages for Castle Rock ...

Looking for more information about Castle Rock? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.

In addition to the Tourism page for Castle Rock, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Castle Rock.

Adding Castle Rock to Our Gazetteer ...

We originally found mention of Castle Rock in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.

From our notes, the earliest published mention we've found for Castle Rock was in the book titled Business Atlas and Shippers' Guide (1895).

We also found Castle Rock on a map titled Rand McNally Map of Colorado (1947).

For more details, see References and Mentions for Castle Rock.

Off-the-Road Links ...

The official website for Castle Rock: www.townofcastlerock.org/

The official website for Douglas County: www.douglas.co.us/

The official website for State of Colorado: https://www.colorado.gov/