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Reverse Phone Lookup for Colorado – Search Colorado Phone Numbers

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Colorado Area Codes – Complete List and Guide

Colorado, known for its majestic Rocky Mountains and outdoor adventures, is home to 64 countiesand 4 active area codesthat serve its diverse urban areas, rural towns, and mountainous regions. Whether you're looking to trace a call, identify a phone number, or simply want to learn more about Colorado area codes, this guide will provide you with all the essential details.

Colorado’s area codes cover a variety of regions, from the bustling city of Denver to the scenic mountain towns and the high plains. Some of the most common Colorado area codes include 303, 719, 970, and 720, each representing a distinct region of the state.

Popular Colorado Area Codes

• 303– Serving Denver and its surrounding metropolitan area, the state's capital.
• 720– A newer overlay area code for the Denver metro region, covering cities like Aurora and Boulder.
• 719– Serving southern Colorado, including Colorado Springs, Pueblo, and the surrounding areas.
• 970– Covering western and northern Colorado, including cities like Fort Collins, Grand Junction, and Steamboat Springs.

Each of these area codes highlights a different aspect of Colorado's diverse geography, from the vibrant city life in Denver to the rugged beauty of the Rockies. Understanding Colorado's area codes will help you explore the state’s many regions and communities.

For more detailed information about the counties, cities, and area codes across Colorado, COPhoneLookup.comoffers easy access to area code lists, searchable databases, and more. Use our tool to quickly look up any phone number, trace its origin, and get detailed results in seconds. Start exploring Colorado’s area codes today and uncover the details behind every call!

Below is a Comprehensive List of All Active Colorado Area Codes, Organized in Numerical Order

• 303 Area Code– Covers the Denver metro area, including cities like Denver, Aurora, Lakewood, and Boulder, plus counties like Denver, Adams, Arapahoe, Jefferson.
• 719 Area Code– Serves southern Colorado, including Colorado Springs, Pueblo, and Trinidad, covering areas like El Paso, Pueblo, Fremont counties.
• 720 Area Code– An overlay for the 303 area code, covering the same Denver metro area, including Aurora and Centennial.
• 970 Area Code– Includes northern and western Colorado, covering Fort Collins, Grand Junction, Steamboat Springs, plus Larimer, Mesa, Eagle counties, and more.

Top 30 Cities in Colorado by Population

All Active Area Codes in Colorado & The Cities They Cover

303 Area Code

Denver, Boulder, Aurora, Lakewood, Littleton, Arvada, Westminster, Highlands Ranch, Englewood, Centennial, Commerce City, Thornton, Longmont, Golden, Brighton

719 Area Code

Colorado Springs, Pueblo, Fountain, Woodland Park, Cañon City, Trinidad, Lamar, La Junta, Walsenburg, Florence, Manitou Springs, Cripple Creek

720 Area Code

Denver, Aurora, Westminster, Thornton, Centennial, Englewood, Highlands Ranch, Littleton, Arvada, Commerce City, Parker, Lone Tree (Overlay for 303)

970 Area Code

Fort Collins, Greeley, Grand Junction, Loveland, Aspen, Steamboat Springs, Durango, Longmont, Vail, Rifle, Craig, Montrose, Glenwood Springs, Telluride

Top 20 Counties in Colorado by Population

Colorado’s Extended Overview & Key Metro Areas

Colorado, often called the Centennial State, is located in the western part of the United States. It is the 21st most populous state, with an estimated population of over 5.8 million residents. Known for its diverse and rugged landscapes, Colorado is home to the majestic Rocky Mountains, vast plains, and picturesque valleys. The state covers 104,094 square miles, making it the 8th largest state in the U.S. Despite its mountainous terrain, Colorado’s geography is varied, offering everything from arid deserts in the south to lush forests and high-altitude lakes in the north.

Colorado's geographic diversity also influences its economy, which is one of the most robust in the country. The state has a strong foundation in industries like technology, aerospace, energy, agriculture, and tourism. Cities like Denver, Boulder, and Colorado Springs are known for their high-tech sectors, including aerospace, software development, and green energy initiatives. Agriculture is another key industry, with Colorado being a leading producer of livestock, grains, and vegetables, especially in its eastern plains.

Known for its outdoor lifestyle, Colorado attracts millions of visitors each year who come for its famous ski resorts, hiking trails, and vibrant cities. The state’s abundant natural beauty makes it a haven for outdoor enthusiasts. From skiing in the winter to hiking, mountain biking, and rafting in the warmer months, the Rocky Mountains provide endless opportunities for adventure.

Colorado’s culture is influenced by its Native American heritage, Spanish colonial history, and the influx of settlers during the 19th-century gold rush. Today, Colorado is a melting pot of diverse cultures, with a significant emphasis on sustainability, outdoor recreation, and innovation.

Key Metro Areas and Cities in Colorado

• Denver-Aurora-Lakewood Metro– Over 2.9 million residents. Vibrant culture, big tech, major gateway to the Rockies.
• Colorado Springs Metro– 700K+. Home to the U.S. Air Force Academy, scenic Pikes Peak, defense & tourism industries.
• Boulder Metro– ~330K. Known for environmental focus, outdoor lifestyle, and top research institutions.
• Fort Collins-Loveland Metro– ~370K. Tech companies, craft breweries, home to Colorado State University.
• Greeley Metro– ~330K. Strong agricultural base (beef, dairy), proximity to Denver’s job market.
• Grand Junction Metro– ~150K. Agricultural hub (vineyards, orchards), energy center, gateway to outdoor recreation.

Cultural Diversity and Population Trends

Colorado’s population is growing steadily, with inflows from other states due to robust job opportunities (tech, energy, healthcare) and the high quality of life. The culture emphasizes the outdoors, progressive values, and innovation. Hispanic and Native American communities shape its rich cultural tapestry, especially in places like Pueblo and Durango.

Tourism and Recreation

With 50+ state parks, 13 national forests, and numerous wilderness areas, Colorado offers world-class skiing (Aspen, Vail, Breckenridge) and summer activities like rafting, mountain biking, and hiking in Rocky Mountain National Park or the San Juan Mountains. The Denver Broncos, Nuggets, Rockies, and Avalanche add to the sports culture, drawing passionate fans statewide.

Colorado Quick Facts: Everything You Need to Know

For official Colorado resources, visit Colorado.govor the Colorado Public Utilities Commission.