Castle Rock ZIP Code List — Douglas County, CO

There are 3 unique ZIP codes in Castle Rock, Colorado. Area code: 720/303.

ZIP codes

131.95

sq mi land

0.01

sq mi water

720/303

area code

Castle Rock, CO ZIP code map

About Castle Rock, CO

Castle Rock, Colorado, is a vibrant town located at the heart of Douglas County. Known for its unique mix of suburban charm and outdoor amenities, it attracts both nature lovers and those looking for a friendly community atmosphere. With a rich history and a growing population, Castle Rock serves as a hub for both residents and visitors in the region.

Location & geography

Situated just south of Denver, Castle Rock is surrounded by stunning landscapes and is approximately 20 miles from the state's capital. The town lies close to several other cities including Parker to the northeast, Larkspur to the south, and Highlands Ranch to the northwest, enriching its geographical diversity. Covering a land area of 131.95 square miles, Castle Rock has a minuscule water area of 0.01 square miles, enhancing its appeal for outdoor activities.

Community & economy

Castle Rock boasts a friendly and welcoming community that values both recreational activities and family-friendly events. The town is home to a diverse array of industries, including retail, healthcare, and technology, contributing to a robust local economy. Daily life in Castle Rock revolves around its well-maintained parks, vibrant downtown area, and numerous community events that bring residents together.

Transportation

Castle Rock is conveniently accessed via major highways including Interstate 25, which runs north-south through the town, connecting it to the greater Denver area. The nearest named airport is Denver International Airport, located about 40 miles to the north, providing residents with a well-connected travel option. Additionally, local transit services offer residents access to surrounding areas, improving connectivity.

History

Castle Rock was founded in the late 19th century, originally as a small railroad town that grew due to its strategic location. Key industries have evolved over the years, with retail and healthcare becoming significant contributors to the local economy. Notable events in the town's history include the development of the iconic Castle Rock itself, from which the city derives its name.

Did you know?

One surprising fact about Castle Rock is that it is home to a well-known outlet mall, providing shoppers with a variety of brand-name stores at discounted prices. Additionally, the town is named after a prominent rock formation that resembles a castle turret, which has now become a popular symbol of the community.

ZIP codes for Castle Rock, CO (3)

ZIP code	City	County	Map
80104	Castle Rock	Douglas	View map
80108	Castle Rock	Douglas	View map
80109	Castle Rock	Douglas	View map

Demographics & statistics

96,195

Population

38.2

Median age

$146,507

Median household income

$62,653

Per capita income

$628,600

Median home value

$1,853

Median monthly rent

81.6%

Home ownership

3.5%

Poverty rate

4.2%

Unemployment

28,580

Housing units

58.1%

Bachelor's or higher

Age distribution

Male Female

3,066

Under 5

3,051

3,829

5–9

3,811

3,322

10–14

3,307

3,590

15–19

3,573

2,659

20–24

2,646

5,452

25–34

5,427

7,290

35–44

7,257

7,059

45–54

7,026

3,332

55–59

3,316

2,746

60–64

2,733

3,636

65–74

3,620

1,706

75–84

1,698

523

85+

520

← Male

Female →

Age summary

Group	Count	%
Under 18	25,094	26.3%
18 and over	71,101	73.7%
65 and over	11,703	12.0%
Median age	38.2 years

Race & ethnicity

White 81.9%

Two or more races 6.3%

Hispanic or Latino 5.8%

Asian 2.3%

Other race 2.1%

Black or African American 1.1%

American Indian / Alaska Native 0.3%

Native Hawaiian / Pacific Islander 0.2%

Group	Count	%
White	83,621	81.9%
Two or more races	6,442	6.3%
Hispanic or Latino	5,882	5.8%
Asian	2,373	2.3%
Other race	2,118	2.1%
Black or African American	1,154	1.1%
American Indian / Alaska Native	312	0.3%
Native Hawaiian / Pacific Islander	175	0.2%

Household income

Under $10k 1.9%

$10k–$15k 1.0%

$15k–$25k 2.2%

$25k–$35k 2.8%

$35k–$50k 5.7%

$50k–$75k 8.6%

$75k–$100k 10.1%

$100k–$150k 21.2%

$150k–$200k 16.5%

$200k+ 30.1%

Range	% of households
Under $10k	1.9%
$10k–$15k	1.0%
$15k–$25k	2.2%
$25k–$35k	2.8%
$35k–$50k	5.7%
$50k–$75k	8.6%
$75k–$100k	10.1%
$100k–$150k	21.2%
$150k–$200k	16.5%
$200k+	30.1%
Median income	$146,507

Housing

Home values

Under $50k 1.2%

$50k–$100k 0.2%

$100k–$150k 0.2%

$150k–$200k 0.5%

$200k–$300k 1.6%

$300k–$500k 22.8%

$500k–$1M 61.1%

$1M+ 12.4%

Housing overview

Metric	Value
Median home value	$628,600
Median rent / month	$1,853
Owner occupied	81.6%
Renter occupied	18.4%
Vacant	3.0%
Single-family detached	78.1%
Large apartment buildings	5.5%
Mobile homes	0.4%
Median rooms	7.6
Avg household size (owned)	2.94

Year built

Era	%
2020 or later	2.8%
2010–2019	24.2%
2000–2009	38.8%
1990–1999	19.5%
1980–1989	7.8%
1970–1979	4.2%
1960–1969	1.0%
1950–1959	0.9%
1940–1949	0.2%
1939 or earlier	0.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.4%
1 bedroom	5.3%
2 bedrooms	12.6%
3 bedrooms	33.0%
4 bedrooms	29.0%
5+ bedrooms	19.8%

Vehicles per household

Vehicles	% of households
No vehicle	2.1%
1 vehicle	18.7%
2 vehicles	46.6%
3 or more	32.6%

Heating fuel

Fuel type	%
Utility gas	78.1%
Electricity	19.6%
Propane / LP gas	1.8%
Fuel oil	0.1%
No fuel used	0.1%

Households & families

Household type	Count	%
Married-couple family	23,351	69.2%
Cohabiting couple	1,974	5.8%
Male householder, no spouse	3,390	10.1%
Female householder, no spouse	5,018	14.9%
Households with children under 18	13,963	42.0%
Households with seniors (65+)	7,882	23.0%
Average household size	2.84

Marital status

Status	Male	Female
Never married	26.0%	22.2%
Married	64.6%	62.3%
Separated	0.5%	1.0%
Widowed	1.3%	4.2%
Divorced	7.5%	10.3%

Education

Less than 9th grade 0.8%

Some HS, no diploma 1.3%

HS graduate 12.7%

Some college, no degree 19.5%

Associate's degree 7.7%

Bachelor's degree 39.4%

Graduate / professional 18.6%

Metric	%
HS diploma or higher	97.9%
Bachelor's or higher	58.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	1,777	6.8%
Kindergarten	1,317	5.0%
Elementary school	11,463	43.6%
High school	6,223	23.6%
College / grad school	5,531	21.0%

Employment

Industry of employment

Education & healthcare 19.8%

Professional & management 16.9%

Finance & real estate 11.3%

Retail trade 9.5%

Arts, food & hospitality 8.3%

Construction 6.4%

Public administration 6.1%

Manufacturing 5.9%

Information 4.3%

Other services 3.4%

Wholesale trade 3.3%

Transportation & utilities 3.2%

Agriculture & mining 1.7%

Occupation

Category	%
Management, business & arts	56.4%
Service	13.5%
Sales & office	20.5%
Natural resources & construction	4.1%
Production & transportation	5.6%

Employment type

Type	%
Private sector	81.2%
Government	12.7%
Self-employed	5.7%
Unpaid family workers	0.5%

Commute

Method	%
Drive alone	68.8%
Carpool	4.9%
Public transit	0.5%
Walk	1.9%
Other means	0.7%
Avg commute (minutes)	29.5

Poverty

All people 3.5%

Under 18 years 3.2%

18 and over 3.6%

Married-couple families 1.4%

Female-led households 13.4%

Income support

Source	% of households
Social Security	21.1%
Retirement income	24.0%
Supplemental Security	1.6%
Cash public assistance	1.3%
Food stamps / SNAP	2.5%

Health indicators

Condition	%
High blood pressure	22.1%
High cholesterol	29.8%
Heart disease	3.6%
Stroke	1.7%
Asthma	9.1%
Arthritis	16.6%
Kidney disease	1.9%
Pulmonary disease	3.8%
Cancer	5.6%

Behavior / access	%
Binge drinking	20.6%
No physical activity	11.6%
Less than 7 hrs sleep	25.4%
Fair or poor health	7.3%
Poor mental health	12.3%
Poor physical health	7.0%
No health insurance	9.2%
Visited doctor (checkup)	67.2%
Visited dentist	76.8%
Cholesterol screening	91.9%
Teeth loss	6.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	5,926	8.3%

Disability	%
Any disability	6.9%
Under 18	2.4%
18–64 years	5.2%
65 and over	26.3%

Health insurance coverage

Type	%
Private insurance	84.6%
Public insurance	19.5%
Uninsured under 19	2.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	90,078	93.6%
Spanish	1,639	1.9%
Other Indo-European	1,129	1.3%
Asian & Pacific Islander	103	0.1%
Other languages	305	0.3%

Place of birth & citizenship

Origin	Count	%
Native born (US)	90,386	93.9%
Born in same state	88,987	92.4%
Born in different state	34,920	36.3%
Foreign born	1,399	1.4%
Naturalized citizen	5,809	6.1%
Not a US citizen	2,959	52.6%

Ancestry

Ancestry	Count	%
French	16,243	16.9%
Italian	11,613	12.1%
Arab	3,088	3.2%
Polish	2,267	2.4%
English	2,263	2.4%

Ancestry	Count	%
Dutch	1,001	1%
Irish	507	0.5%
German	426	0.4%
Norwegian	308	0.3%

Technology access

Metric	% of households
Computer access	34.9%
Internet access	97.6%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Castle Rock, CO have?

Castle Rock, CO has 3 ZIP codes: 80104, 80108, 80109. Each ZIP code serves a distinct delivery area within the city and surrounding region.

What is the main ZIP code for Castle Rock, CO?

The primary ZIP code for Castle Rock, CO is 80104. The city uses area code 720 or 303 for phone service.

What county is Castle Rock, CO in?

Castle Rock is located in Douglas County, Colorado.

How many ZIP codes are in Castle Rock, CO?

Castle Rock, CO has 3 ZIP codes.

What ZIP code should I use for addresses in downtown Castle Rock near the Castle Rock town center?

Downtown Castle Rock and the town center area primarily use ZIP code 80104, which is the main ZIP code for the city's central business district.

Which ZIP codes serve the residential areas along I-25 in Castle Rock?

The northern residential areas near the I-25 corridor in Castle Rock are served by ZIP codes 80108 and 80109, with 80108 covering much of the growth areas along the interstate.