Colorado Zip Codes By County: A Complete Guide

Are you looking for a specific zip code in Colorado, and do you need to know which county it belongs to? You've come to the right place. This guide provides a comprehensive overview of zip codes organized by county in Colorado, offering a valuable resource for residents, businesses, and anyone needing this information. From the bustling streets of Denver to the serene landscapes of the Rocky Mountains, understanding Colorado's zip code system is crucial for various purposes, from mail delivery to administrative tasks. This guide combines ease of use with detailed information, ensuring you find what you need quickly and efficiently.

What Are Zip Codes and Why Are They Important?

Zip codes, short for Zone Improvement Plan codes, were introduced by the United States Postal Service (USPS) in 1963. They are a system of postal codes used to simplify and speed up mail delivery. Each zip code corresponds to a specific geographic area, and in the case of Colorado, these areas are often (but not always) aligned with county boundaries. Understanding zip codes is vital for numerous reasons:

• Mail Delivery: Accurate zip codes ensure that your mail reaches its intended destination promptly.
• Shipping and Receiving: Businesses rely on zip codes for efficient shipping and delivery services.
• Demographic Analysis: Marketers and researchers use zip codes to analyze demographic data and target specific areas.
• Local Services: Many local services, such as emergency response and utility providers, use zip codes to identify service areas.

How Zip Codes Relate to Colorado Counties

While zip codes are designed to aid in mail delivery, their relationship with county boundaries isn't always straightforward. Some zip codes span multiple counties, while others cover only a portion of a county. However, in many cases, you can determine the county associated with a zip code. The following sections provide a detailed breakdown of zip codes by county in Colorado.

Adams County

Adams County, located in the north-central part of Colorado, is home to a diverse population and a mix of urban and suburban areas. Here are some of the zip codes associated with Adams County:

• 80002, 80003, 80004, 80005, 80007, 80010, 80011, 80012, 80013, 80020, 80021, 80022, 80030, 80031, 80229, 80233, 80234, 80239, 80602

Note: This is not an exhaustive list. Always verify specific zip code-county associations.

Arapahoe County

Arapahoe County is located in the Denver-Aurora Metropolitan Area and is known for its blend of residential, commercial, and recreational areas. Zip codes in Arapahoe County include:

• 80014, 80015, 80016, 80017, 80018, 80019, 80110, 80111, 80112, 80120, 80121, 80122, 80123, 80124, 80126, 80130, 80161

Note: Always double-check zip codes for accuracy.

Boulder County

Boulder County is home to the city of Boulder and a number of other communities known for their natural beauty and vibrant culture. Zip codes within Boulder County include:

• 80026, 80027, 80028, 80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308, 80309, 80421, 80466

Note: This is a list and might not be fully complete; use it as a reference.

Broomfield County

Broomfield County is a consolidated city and county located between Denver and Boulder. Zip codes in Broomfield County include:

• 80020, 80021, 80023, 80024, 80026

Note: It's important to cross-reference this list.

Clear Creek County

Clear Creek County is a mountain county known for its scenic beauty and outdoor recreational opportunities. Zip codes in Clear Creek County include:

• 80423, 80430, 80435, 80437, 80439, 80444, 80456, 80465

Note: Always verify zip codes with official resources.

Denver County

Denver County, the most populous county in Colorado, encompasses the city and county of Denver. Here are some of the zip codes for Denver:

• 80202, 80203, 80204, 80205, 80206, 80207, 80209, 80210, 80211, 80212, 80214, 80215, 80216, 80217, 80218, 80219, 80220, 80221, 80222, 80223, 80224, 80226, 80227, 80228, 80230, 80231, 80235, 80236, 80237, 80238, 80239, 80241, 80243, 80244, 80246, 80247, 80249, 80264, 80290, 80293, 80294, 80299

Note: This is a comprehensive list, but always confirm with official sources.

Douglas County

Douglas County is a rapidly growing county south of Denver, known for its suburban communities and open spaces. Some of the zip codes include:

• 80104, 80108, 80116, 80124, 80125, 80126, 80134, 80135, 80138, 80163

Note: County lines and zip codes may overlap. Always use multiple sources.

Eagle County

Eagle County is located in the central mountains of Colorado, home to popular ski resorts and outdoor recreation areas. Zip codes within Eagle County include:

• 81620, 81631, 81632, 81647, 81657

Note: Be certain that the zip codes are accurate for your purpose.

El Paso County

El Paso County is home to Colorado Springs and is known for its military presence and stunning natural landscapes. The zip codes are:

• 80809, 80817, 80829, 80831, 80860, 80903, 80904, 80905, 80906, 80907, 80908, 80909, 80910, 80911, 80913, 80914, 80915, 80916, 80917, 80918, 80919, 80920, 80921, 80922, 80923, 80924, 80925, 80926, 80927, 80928, 80929, 80930, 80931, 80932, 80933, 80934, 80935, 80936, 80937, 80938, 80939, 80940, 80941, 80942, 80943, 80944, 80945, 80946, 80947, 80950, 80951, 80960, 80962, 80970, 80971, 80977, 80995

Note: Always refer to official sources for the latest updates.

Fremont County

Fremont County is located in south-central Colorado and is known for its historical significance and natural beauty. Zip codes include:

• 81212, 81220, 81226, 81230, 81232, 81244

Note: Verify zip code accuracy when you need precise information.

Garfield County

Garfield County is situated in western Colorado and is known for its outdoor recreational opportunities and vibrant communities. Zip codes are:

• 81621, 81623, 81635, 81643, 81645, 81646, 81648

Note: Always confirm the details with authoritative resources.

Gilpin County

Gilpin County is a small mountain county known for its historic towns and proximity to Denver. Zip codes include:

• 80427, 80435, 80450

Note: When using this data, use multiple sources for confirmation.

Grand County

Grand County is located in the heart of the Rocky Mountains and is a popular destination for outdoor enthusiasts. Zip codes are:

• 80420, 80424, 80435, 80438, 80442, 80447, 80448, 80449

Note: Confirm this with the USPS for complete accuracy.

Gunnison County

Gunnison County is located in the southwestern part of Colorado and is known for its stunning mountain scenery and outdoor recreation. Zip codes include:

• 81223, 81230, 81234, 81240, 81247

Note: It's important to get the data from official sources for accuracy.

Jackson County

Jackson County is located in northern Colorado, bordering Wyoming, and is known for its vast open spaces and outdoor recreation. Zip codes are:

• 82420, 82428, 82441, 80422, 80454

Note: Always consult a current USPS directory for any updates.

Jefferson County

Jefferson County is a large county west of Denver, encompassing a variety of communities and natural areas. Zip codes are: — Florida Bar Phone Number: Contact & Info

• 80003, 80004, 80005, 80007, 80027, 80033, 80034, 80123, 80214, 80215, 80225, 80226, 80227, 80228, 80232, 80233, 80234, 80235, 80236, 80237, 80239, 80240, 80248, 80265, 80401, 80403, 80419, 80420, 80421, 80425, 80426, 80433, 80455, 80463, 80465

Note: Refer to the most recent postal service listings for accuracy.

Kiowa County

Kiowa County is located in southeastern Colorado and is known for its rural landscapes and agricultural heritage. Zip codes include: — Charlie Kirk & Twitter: Impact, Controversies, Strategies

• 81023, 81034, 81043

Note: Be certain that the zip codes are accurate for your purpose.

Kit Carson County

Kit Carson County is located on the eastern plains of Colorado and is known for its agricultural economy and expansive landscapes. Zip codes include:

• 80721, 80722, 80730, 80807

Note: Always confirm with official resources.

La Plata County

La Plata County is situated in southwestern Colorado and is known for its beautiful scenery and outdoor recreational opportunities. Zip codes include:

• 81122, 81123, 81137, 81301, 81302, 81303, 81321, 81324

Note: Confirm this with the USPS for complete accuracy.

Lake County

Lake County is located in the central mountains of Colorado and is known for its mining history and outdoor recreation. Zip codes include:

• 80421, 80436, 81220, 81232, 81249

Note: Verify zip code accuracy when you need precise information.

Larimer County

Larimer County is located in northern Colorado and is home to the city of Fort Collins and a number of other communities known for their natural beauty and vibrant culture. Zip codes within Larimer County include:

• 80501, 80503, 80504, 80506, 80516, 80517, 80520, 80521, 80522, 80523, 80524, 80525, 80526, 80528, 80532, 80534, 80535, 80536, 80537, 80547, 80549, 80550, 80551, 80614

Note: It's important to cross-reference this list.

Las Animas County

Las Animas County is located in southeastern Colorado and is known for its historical significance and natural beauty. Zip codes include:

• 81036, 81038, 81039, 81040, 81050, 81052, 81053, 81058, 81060

Note: Refer to the most recent postal service listings for accuracy.

Lincoln County

Lincoln County is located on the eastern plains of Colorado and is known for its rural landscapes and agricultural heritage. Zip codes include:

• 80809, 80816, 80834, 80836

Note: When using this data, use multiple sources for confirmation.

Logan County

Logan County is located on the northeastern plains of Colorado and is known for its agricultural production and scenic beauty. Zip codes are:

• 80723, 80729, 80731, 80734, 80735, 80736, 80737, 80738

Note: Be certain that the zip codes are accurate for your purpose.

Mesa County

Mesa County is located in western Colorado and is known for its fruit production, outdoor recreation, and stunning landscapes. Zip codes include:

• 81411, 81413, 81501, 81502, 81503, 81504, 81505, 81506, 81507, 81520, 81521, 81523, 81524, 81525, 81639

Note: Always consult a current USPS directory for any updates.

Mineral County

Mineral County is located in southwestern Colorado and is known for its natural beauty and outdoor recreation. Zip codes include:

• 81132, 81144

Note: Always refer to official sources for the latest updates.

Moffat County

Moffat County is located in northwestern Colorado and is known for its wide-open spaces and outdoor recreation. Zip codes include:

• 81611, 81617

Note: Always verify zip codes with official resources.

Montezuma County

Montezuma County is located in southwestern Colorado and is known for its ancient ruins and agricultural heritage. Zip codes include:

• 81321, 81323, 81328, 81330

Note: It is essential to double-check this list for accuracy.

Montrose County

Montrose County is situated in western Colorado and is known for its stunning mountain scenery and outdoor recreation. Zip codes include:

• 81401, 81402, 81403, 81414, 81427

Note: Be sure to cross-reference this information for accuracy.

Morgan County

Morgan County is located in northeastern Colorado and is known for its agricultural production and prairie landscapes. Zip codes include:

• 80516, 80521, 80701, 80720, 80728, 80751, 80757

Note: When using this data, use multiple sources for confirmation.

Otero County

Otero County is located in southeastern Colorado and is known for its agricultural heritage and rural landscapes. Zip codes include:

• 81033, 81054, 81055, 81057, 81067

Note: Verify zip code accuracy when you need precise information.

Ouray County

Ouray County is located in southwestern Colorado and is known for its stunning mountain scenery and outdoor recreation. Zip codes include:

• 81423, 81427

Note: Be certain that the zip codes are accurate for your purpose.

Park County

Park County is located in the central mountains of Colorado and is known for its scenic beauty and outdoor recreational opportunities. Zip codes are:

• 80423, 80443, 80448, 80459, 80461, 80470, 80475, 80808

Note: Always confirm with official resources.

Phillips County

Phillips County is located on the northeastern plains of Colorado and is known for its agricultural production and wide-open spaces. Zip codes are:

• 80723, 80726

Note: Always consult a current USPS directory for any updates.

Pitkin County

Pitkin County is located in the central mountains of Colorado and is known for its luxury resorts and outdoor recreation. Zip codes are:

• 81611, 81612, 81621, 81656

Note: It is important to confirm this information for any official purposes.

Prowers County

Prowers County is located in southeastern Colorado and is known for its agricultural production and rural landscapes. Zip codes include:

• 81023, 81025, 81026, 81030, 81032, 81072

Note: Always refer to official sources for the latest updates.

Pueblo County

Pueblo County is located in south-central Colorado and is known for its diverse population and historical significance. Zip codes include:

• 81001, 81003, 81004, 81005, 81006, 81007, 81008, 81009, 81019, 81021, 81037, 81041, 81042, 81056

Note: Always verify zip codes with official resources.

Rio Blanco County

Rio Blanco County is located in northwestern Colorado and is known for its wide-open spaces and outdoor recreation. Zip codes include:

• 81623, 81650, 81655

Note: Confirm this with the USPS for complete accuracy.

Rio Grande County

Rio Grande County is located in south-central Colorado and is known for its agricultural heritage and natural beauty. Zip codes include:

• 81121, 81132, 81144

Note: When using this data, use multiple sources for confirmation.

Routt County

Routt County is located in northwestern Colorado and is known for its stunning mountain scenery and outdoor recreation. Zip codes include:

• 80424, 80436, 80443, 80467, 80477, 80487, 81669

Note: Always verify zip codes with official resources.

Saguache County

Saguache County is located in south-central Colorado and is known for its vast open spaces and rural landscapes. Zip codes include:

• 81123, 81130, 81144

Note: It's important to cross-reference this list.

San Juan County

San Juan County is located in southwestern Colorado and is known for its stunning mountain scenery and historic towns. Zip codes include:

• 81427

Note: Use this only as a reference, confirm with a postal source.

San Miguel County

San Miguel County is located in southwestern Colorado and is known for its outdoor recreation and stunning mountain scenery. Zip codes include:

• 81424, 81430, 81432, 81435

Note: It's important to get the data from official sources for accuracy.

Sedgwick County

Sedgwick County is located on the northeastern plains of Colorado and is known for its agricultural production and wide-open spaces. Zip codes are:

• 80721, 80724

Note: Refer to the most recent postal service listings for accuracy.

Summit County

Summit County is located in the central mountains of Colorado and is known for its world-class ski resorts and outdoor recreation. Zip codes include: — George W. Bush: Life, Presidency, And Legacy

• 80424, 80435, 80443, 80451, 80497

Note: Be certain that the zip codes are accurate for your purpose.

Teller County

Teller County is located in central Colorado and is known for its historic towns and natural beauty. Zip codes include:

• 80809, 80829, 80863, 80866, 80868, 80869, 80929

Note: Verify zip code accuracy when you need precise information.

Washington County

Washington County is located on the eastern plains of Colorado and is known for its agricultural production and rural landscapes. Zip codes include:

• 80726, 80727, 80729, 80731, 80733

Note: This is a list and might not be fully complete; use it as a reference.

Weld County

Weld County is located in northern Colorado and is known for its agricultural production, oil and gas industry, and diverse communities. Zip codes are:

• 80501, 80504, 80505, 80507, 80514, 80515, 80517, 80524, 80531, 80533, 80537, 80542, 80543, 80601, 80602, 80610, 80615, 80620, 80621, 80631, 80633, 80634, 80640, 80642, 80643, 80644, 80645, 80646, 80649, 80650, 80651

Note: Always consult a current USPS directory for any updates.

Yuma County

Yuma County is located on the eastern plains of Colorado and is known for its agricultural production and rural landscapes. Zip codes include:

• 80720, 80728, 80735, 80739, 80741, 80742, 80743, 80747, 80749

Note: Always refer to official sources for the latest updates.

Frequently Asked Questions (FAQ)

1. How do I find the zip code for a specific address in Colorado?

You can use the USPS website's zip code lookup tool. Simply enter the street address, city, and state to find the correct zip code.

2. Can a zip code span multiple counties?

Yes, it is common for a zip code to cover areas in more than one county. This guide aims to provide general county associations, but always verify for specific needs.

3. Why are zip codes important for businesses?

Zip codes are crucial for businesses for efficient shipping, targeted marketing, and accurate demographic analysis.

4. Where can I find a complete and updated list of Colorado zip codes by county?

While this guide provides a comprehensive overview, it is advisable to consult the USPS website or other official sources for the most up-to-date and accurate information.

5. What is the difference between a zip code and a postal code?

In the United States, the terms are interchangeable. Both refer to a code used to facilitate mail delivery.

6. How can zip codes be used for demographic research?

Zip codes can be used to gather and analyze demographic data, which helps researchers and marketers understand the characteristics of specific geographic areas.

7. What should I do if I find an error in the zip code-county information?

It is always advisable to cross-reference any zip code-county information with official USPS resources. Contact the USPS or your local county government if you identify discrepancies.

Conclusion

This guide offers a helpful overview of zip codes organized by county in Colorado. By understanding the relationship between zip codes and counties, you can streamline your mail delivery, shipping, and administrative tasks. Remember to always verify specific zip codes with official USPS resources for accuracy. This information is designed to serve as a valuable reference tool, but it's important to stay informed about any updates to the system. We hope this guide has been useful in helping you navigate the complexities of Colorado zip codes! Be sure to double-check the accuracy of zip codes for your specific needs.