Boundary Atlas

Colorado's 6th congressional district (CO-06)

Colorado's 6th congressional district (CO-06) covers parts or all of Arapahoe County, Jefferson County, Adams County, Douglas County and Denver County, and 32 ZIP codes (11 wholly inside it). Its 2020 population was 721,681. This is the map in force for the November 3, 2026 election.

721,681residents (2020 Census)
5counties
32ZIP codes
429voting precincts

Who represents CO-06

OfficeMemberContact
U.S. Representative (CO-06)Jason Crow (D)202-225-7882
U.S. SenatorJohn W. Hickenlooper (D)202-224-5941 · contact form
U.S. SenatorMichael F. Bennet (D)202-224-5852 · contact form

Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).

Counties

CountyShare of the county's residents in CO-06
Arapahoe County93%
Jefferson County10%
Adams County9.3%
Douglas County0.8%
Denver County0.1%

ZIP codes

Percentages mark ZIPs only partly in CO-06: the share of that ZIP's residents inside it.

Towns

Southwest Arapahoe CCD, North Aurora CCD, South Aurora CCD, East Arapahoe CCD, Northeast Jefferson CCD, South Jefferson CCD, East Adams CCD, Parker CCD and Denver CCD.

Get this in your AI agent

Your agent can draw every precinct in CO-06, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

get_boundaries(id="us:congressional_district:0806", children_level="precinct", include_districts=True)