Colorado projected population growth from 2025 through 2035

Colorado, the Centennial State, is renowned for its breathtaking Rocky Mountain landscapes, outdoor recreation opportunities, and thriving cultural scene. From the ski slopes of Aspen to the vibrant streets of Denver, Colorado offers a high quality of life amidst stunning natural beauty. With a booming economy driven by industries such as technology, aerospace, and outdoor gear, Colorado continues to attract young professionals and outdoor enthusiasts seeking adventure and opportunity.

Picture from a ciy in Colorado U.S.

Colorado forecasted population

Aterio data team has developed an AI enhanced model that helps organizations understand the forecasted growth of population in Colorado for years 2025 through 2035.

Population Growth Rate (Year over Year)

5,600,0005,800,0006,000,0006,200,0006,400,0006,600,0006,800,0000.00%0.50%1.00%1.50%2.00%2020202120222023202420252026202720282029203020312032203320342035

2020

Population

5,775,324

Growth

0.00%

2021

Population

5,814,036

Growth

0.67%

2022

Population

5,850,935

Growth

0.63%

2023

Population

5,901,339

Growth

0.86%

2024

Population

5,957,493

Growth

0.95%

2025

Population

6,066,471

Growth

1.83%

2026

Population

6,119,207

Growth

0.87%

2027

Population

6,174,805

Growth

0.91%

2028

Population

6,233,246

Growth

0.95%

2029

Population

6,293,628

Growth

0.97%

2030

Population

6,355,831

Growth

0.99%

2031

Population

6,404,037

Growth

0.76%

2032

Population

6,454,089

Growth

0.78%

2033

Population

6,505,302

Growth

0.79%

2034

Population

6,558,130

Growth

0.81%

2035

Population

6,612,307

Growth

0.83%

Last update at Thu May 28 2026

Zip code level csv report on population forecast and economic development in Colorado

Our team has created a comprehensive report on population forecast and economic development by zip code using our proprietary AI models.

Top 10 most populated cities in Colorado

Our model provides a detailed 2025 through 2035 forecasted population growth for every city and zip code in Colorado.

City

2020 census

2025 population

2030 population

2035 population

Open
Denver715,513743,442783,826821,312View city insights, Denver
Colorado Springs480,378503,090527,492548,030View city insights, Colorado Springs
Aurora386,333411,196432,520451,799View city insights, Aurora
Fort Collins169,826174,572187,036199,250View city insights, Fort Collins
Thornton141,865149,084158,694167,774View city insights, Thornton
Arvada124,354123,533125,563126,953View city insights, Arvada
Westminster116,654117,428123,630129,431View city insights, Westminster
Pueblo111,868112,193114,094115,524View city insights, Pueblo
Greeley108,809117,543131,275145,067View city insights, Greeley
Boulder108,556108,714113,382117,637View city insights, Boulder

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