Colorado State Senate District 30

State Legislative District Profile (Upper Chamber)

Overview

District ID
co-sd-030
State
Colorado
Chamber
Upper chamber (state senate)
District Code
030
Land Area
119.2 sq mi
Water Area
1.57 sq mi

Boundary

Boundary of Colorado State Senate District 30

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Douglas County119.16 sq mi100.0%14.2%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Highlands Ranch CDP24.27 sq mi20.4%100.0%
Lone Tree city9.81 sq mi8.2%100.0%
Castle Pines city9.59 sq mi8.1%100.0%
Roxborough Park CDP9.23 sq mi7.7%100.0%
Sterling Ranch CDP5.53 sq mi4.6%100.0%
Castle Pines Village CDP4.45 sq mi3.7%100.0%
Meridian CDP2.56 sq mi2.2%100.0%
Stepping Stone CDP0.74 sq mi0.6%100.0%
Acres Green CDP0.60 sq mi0.5%100.0%
Meridian Village CDP0.51 sq mi0.4%99.9%
Sierra Ridge CDP0.51 sq mi0.4%99.9%
Littleton city0.22 sq mi0.2%1.7%

Showing all 12 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 4168,443100.0%23.3%100.0%

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

Voters

Registered Voters
146,669
Active Voters
133,118 (90.8%)

Party Registration

PartyVotersShare
Democratic27,07818.5%
Republican42,03628.7%
Unaffiliated74,94451.1%
Other parties2,6111.8%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2025–202663,639 (43.4%)0 (0.0%)0 (0.0%)
2023–2024116,885 (79.7%)12,762 (8.7%)23,533 (16.0%)
2021–202292,137 (62.8%)8,833 (6.0%)16,385 (11.2%)
2019–2020102,764 (70.1%)17,570 (12.0%)21,742 (14.8%)
2017–201878,804 (53.7%)9,466 (6.5%)13,303 (9.1%)
2015–201679,455 (54.2%)4,482 (3.1%)10,655 (7.3%)
2013–201459,000 (40.2%)3,617 (2.5%)10,807 (7.4%)
2011–201265,254 (44.5%)2,570 (1.8%)7,065 (4.8%)

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
174,242 (± 2,723)
Median Age
40.5
Median Household Income
$154,239 (± $3,553)
High School Graduate or Higher (age 25+)
98.7%
Bachelor's Degree or Higher (age 25+)
67.2%

Population by Age

GroupPeopleShare
Under 1839,45222.6%
18 to 64109,79663.0%
65 and over24,99414.3%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)16,5339.5%
White, not Hispanic133,34376.5%
Black, not Hispanic2,5791.5%
Asian, not Hispanic12,7257.3%
American Indian / Alaska Native, not Hispanic2830.2%
Native Hawaiian / Pacific Islander, not Hispanic1490.1%
Some other race, not Hispanic9570.5%
Two or more races, not Hispanic7,6734.4%

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
166,818
Citizen Voting Age Population (CVAP)
128,134

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic151,25690.7%
Hispanic15,5659.3%
White134,64080.7%
Black2,3071.4%
Asian8,7345.2%
American Indian / Alaska Native2850.2%
Native Hawaiian / Pacific Islander2470.1%
Two or More Races3930.2%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic117,48991.7%
Hispanic10,6478.3%
White106,59483.2%
Black2,2501.8%
Asian7,5465.9%
American Indian / Alaska Native7880.6%
Native Hawaiian / Pacific Islander1610.1%
Two or More Races2260.2%

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