119th Congress · CO-3
Colorado's 3rd Congressional District
Colorado's 3rd Congressional District (CO-3) has a population of 726,135. The median household income is $69,034 and the median age is 41.6.
726,135
Population
15
People / sq mi
$69,034
Median Income
41.6
Median Age
CO-3 covers 49,950 sq mi of land at 14.5 people per square mile.
Race & Ethnicity
| White | 79.1% |
| Black or African American | 1.0% |
| Asian | 0.6% |
| Hispanic or Latino (any race) | 4.4% |
Economy & Income
$69,034
Median Household Income
$39,773
Per Capita Income
8.9%
Poverty Rate
2.7%
Unemployment
Housing
$339,300
Median Home Value
$1,134
Median Rent
70.9%
Homeownership
Education
91.8%
High School+
32.3%
Bachelor's+
Other Colorado Congressional Districts
Largest cities in Colorado
Largest counties in Colorado
State rankings
Frequently Asked Questions
Colorado's 3rd Congressional District (CO-3) has a population of 726,135 according to the latest Census ACS 5-Year estimates. Each US Congressional District is drawn to be roughly equal in population (~760K people).
The median household income in Colorado's 3rd Congressional District is $69,034, with a per capita income of $39,773.
Colorado's 3rd Congressional District is 79.1% White, 1.0% Black, 0.6% Asian, and 4.4% Hispanic or Latino, per Census ACS data.
More from Colorado
Data for Colorado's 3rd Congressional District (119th Congress) from the American Community Survey 5-Year estimates. Land area from the Census Gazetteer files. Congressional districts are redrawn after each decennial Census; the 119th Congress (current) uses post-2020 boundaries.
this entity is one of the data points covered by this site’s U.S. population demographics dataset. The detail above comes directly from the U.S. Census Bureau ACS and decennial files; the context that follows situates the headline numbers against the broader distribution across U.S. states, metros, cities, and ZIPs.
The methodology behind every numeric value on this page is publicly documented on the the U.S. Census Bureau ACS and decennial files portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. states, metros, cities, and ZIPs with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: U.S. Census Bureau ACS, 2026.