119th Congress · CO-1
Colorado's 1st Congressional District
Colorado's 1st Congressional District (CO-1) has a population of 719,744. The median household income is $91,539 and the median age is 35.1.
719,744
Population
4677
People / sq mi
$91,539
Median Income
35.1
Median Age
CO-1 covers 154 sq mi of land at 4676.7 people per square mile.
Race & Ethnicity
| White | 62.9% |
| Black or African American | 8.8% |
| Asian | 0.1% |
| Hispanic or Latino (any race) | 2.9% |
Economy & Income
$91,539
Median Household Income
$61,152
Per Capita Income
7.7%
Poverty Rate
3.4%
Unemployment
Housing
$586,700
Median Home Value
$1,770
Median Rent
48.9%
Homeownership
Education
91.4%
High School+
55.6%
Bachelor's+
Other Colorado Congressional Districts
Largest cities in Colorado
Largest counties in Colorado
State rankings
Frequently Asked Questions
Colorado's 1st Congressional District (CO-1) has a population of 719,744 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 1st Congressional District is $91,539, with a per capita income of $61,152.
Colorado's 1st Congressional District is 62.9% White, 8.8% Black, 0.1% Asian, and 2.9% Hispanic or Latino, per Census ACS data.
More from Colorado
Data for Colorado's 1st 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.
The this entity record above pulls directly from the U.S. Census Bureau ACS and decennial files. What follows is the per-entity context — how this entity sits in the broader U.S. population demographics distribution and which underlying factors drive the headline numbers.
Every number on this page links back to the U.S. Census Bureau ACS and decennial files; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
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.