Delaware State Senate District 12

State Legislative District Profile (Upper Chamber)

Overview

District ID
de-sd-012
State
Delaware
Chamber
Upper chamber (state senate)
District Code
012
Land Area
71.2 sq mi
Water Area
36.5 sq mi

Boundary

Boundary of Delaware State Senate District 12

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
New Castle County71.24 sq mi100.0%16.7%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Glasgow CDP3.00 sq mi4.2%30.2%
Delaware City city1.86 sq mi2.6%100.0%
New Castle city1.38 sq mi1.9%39.8%
St. Georges CDP1.38 sq mi1.9%100.0%
Port Penn CDP0.40 sq mi0.6%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
DE At-Large47,273100.0%4.8%100.0%

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

Voters

Registered Voters
40,099
Active Voters
39,174 (97.7%)

Party Registration

PartyVotersShare
Democratic19,05047.5%
Republican8,15120.3%
Unaffiliated11,87329.6%
Other parties1,0252.6%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202426,538 (66.2%)0 (0.0%)0 (0.0%)
2021–202215,809 (39.4%)0 (0.0%)0 (0.0%)
2019–202023,622 (58.9%)0 (0.0%)0 (0.0%)
2017–201816,227 (40.5%)0 (0.0%)0 (0.0%)
2015–201618,993 (47.4%)0 (0.0%)0 (0.0%)
2013–20148,994 (22.4%)0 (0.0%)0 (0.0%)
2011–201215,767 (39.3%)0 (0.0%)0 (0.0%)

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 01/14/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
51,404 (± 2,281)
Median Age
43.0
Median Household Income
$110,976 (± $4,543)
High School Graduate or Higher (age 25+)
94.9%
Bachelor's Degree or Higher (age 25+)
37.8%

Population by Age

GroupPeopleShare
Under 1811,10521.6%
18 to 6431,41361.1%
65 and over8,88617.3%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)4,1608.1%
White, not Hispanic27,73654.0%
Black, not Hispanic14,07027.4%
Asian, not Hispanic3,7797.4%
American Indian / Alaska Native, not Hispanic160.0%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic330.1%
Two or more races, not Hispanic1,6103.1%

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
49,462
Citizen Voting Age Population (CVAP)
38,481

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic45,68692.4%
Hispanic3,7777.6%
White27,90956.4%
Black13,52027.3%
Asian2,8795.8%
American Indian / Alaska Native180.0%
Native Hawaiian / Pacific Islander00.0%
Two or More Races1030.2%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic36,18694.0%
Hispanic2,2976.0%
White23,09660.0%
Black10,87128.3%
Asian1,9955.2%
American Indian / Alaska Native2100.5%
Native Hawaiian / Pacific Islander10.0%
Two or More Races910.2%

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