Colorado State Senate District 17

State Legislative District Profile (Upper Chamber)

Overview

District ID
co-sd-017
State
Colorado
Chamber
Upper chamber (state senate)
District Code
017
Land Area
104.1 sq mi
Water Area
3.29 sq mi

Boundary

Boundary of Colorado State Senate District 17

Boundary as GeoJSON

Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.

Counties

CountyOverlapShare of district landShare of county land
Boulder County77.55 sq mi74.5%10.7%
Weld County26.21 sq mi25.2%0.7%
Broomfield County0.24 sq mi0.2%0.7%

Showing all 3 counties

Places

PlaceOverlapShare of district landShare of place land
Longmont city28.78 sq mi27.6%98.3%
Erie town19.72 sq mi18.9%92.3%
Lafayette city9.22 sq mi8.9%99.7%
Broomfield city0.24 sq mi0.2%0.7%
Leyner CDP0.20 sq mi0.2%100.0%

Showing all 5 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
CO District 2164,658100.0%22.8%100.0%
CO District 700.0%0.0%<0.1%

Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).

Voters

Registered Voters
133,489
Active Voters
121,518 (91.0%)

Party Registration

PartyVotersShare
Democratic41,15730.8%
Republican19,37314.5%
Unaffiliated70,06152.5%
Other parties2,8982.2%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202660,004 (45.0%)0 (0.0%)0 (0.0%)
2023–2024102,477 (76.8%)19,845 (14.9%)10,211 (7.6%)
2021–202281,972 (61.4%)16,063 (12.0%)7,306 (5.5%)
2019–202092,161 (69.0%)28,113 (21.1%)10,506 (7.9%)
2017–201871,998 (53.9%)16,586 (12.4%)6,530 (4.9%)
2015–201671,704 (53.7%)7,333 (5.5%)5,280 (4.0%)
2013–201452,502 (39.3%)6,894 (5.2%)6,158 (4.6%)
2011–201258,337 (43.7%)6,111 (4.6%)4,215 (3.2%)

Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.

Browse the voter list for this district (premium access; sign-in required)

Source: Civitech voter file snapshot as of 01/20/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
168,832 (± 1,299)
Median Age
39.8
Median Household Income
$107,092 (± $4,134)
High School Graduate or Higher (age 25+)
94.2%
Bachelor's Degree or Higher (age 25+)
54.9%

Population by Age

GroupPeopleShare
Under 1835,80721.2%
18 to 64105,01262.2%
65 and over28,01316.6%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)33,46919.8%
White, not Hispanic118,03169.9%
Black, not Hispanic1,0670.6%
Asian, not Hispanic6,6053.9%
American Indian / Alaska Native, not Hispanic2920.2%
Native Hawaiian / Pacific Islander, not Hispanic1860.1%
Some other race, not Hispanic4220.2%
Two or more races, not Hispanic8,7605.2%

Source: U.S. Census Bureau, American Community Survey 2020-2024 ACS 5-year estimates (tables B01001, B01002, B01003, B03002, B15003, B19013) for this state legislative district. Estimates are survey-based; ± figures are 90% margins of error.

Citizen Voting Age Population

Total Citizen Population
161,231
Citizen Voting Age Population (CVAP)
125,903

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic131,93681.8%
Hispanic29,29718.2%
White119,49474.1%
Black1,0830.7%
Asian5,0133.1%
American Indian / Alaska Native2910.2%
Native Hawaiian / Pacific Islander1840.1%
Two or More Races7930.5%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic107,24685.2%
Hispanic18,66014.8%
White98,53378.3%
Black1,8091.4%
Asian4,9183.9%
American Indian / Alaska Native1,3531.1%
Native Hawaiian / Pacific Islander1410.1%
Two or More Races5420.4%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).