Delaware State Senate District 1

State Legislative District Profile (Upper Chamber)

Overview

District ID
de-sd-001
State
Delaware
Chamber
Upper chamber (state senate)
District Code
001
Land Area
12.9 sq mi
Water Area
3.07 sq mi

Boundary

Boundary of Delaware State Senate District 1

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
New Castle County12.89 sq mi100.0%3.0%

Showing all 1 county

Places

PlaceOverlapShare of district landShare of place land
Wilmington city2.31 sq mi17.9%21.2%
Edgemoor CDP0.96 sq mi7.4%49.9%
Bellefonte town0.18 sq mi1.4%100.0%
Claymont CDP0.15 sq mi1.2%7.2%

Showing all 4 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-Large44,708100.0%4.5%100.0%

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

Voters

Registered Voters
37,254
Active Voters
36,151 (97.0%)

Party Registration

PartyVotersShare
Democratic19,69552.9%
Republican6,33817.0%
Unaffiliated10,23327.5%
Other parties9882.7%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202425,130 (67.5%)0 (0.0%)0 (0.0%)
2021–202216,009 (43.0%)0 (0.0%)0 (0.0%)
2019–202022,643 (60.8%)0 (0.0%)0 (0.0%)
2017–201816,925 (45.4%)0 (0.0%)0 (0.0%)
2015–201618,721 (50.3%)0 (0.0%)0 (0.0%)
2013–201410,042 (27.0%)0 (0.0%)0 (0.0%)
2011–201216,216 (43.5%)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
44,775 (± 2,004)
Median Age
42.8
Median Household Income
$85,454 (± $6,514)
High School Graduate or Higher (age 25+)
96.0%
Bachelor's Degree or Higher (age 25+)
53.0%

Population by Age

GroupPeopleShare
Under 188,17218.3%
18 to 6426,73059.7%
65 and over9,87322.1%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)2,5015.6%
White, not Hispanic29,56666.0%
Black, not Hispanic9,42521.0%
Asian, not Hispanic1,1442.6%
American Indian / Alaska Native, not Hispanic240.1%
Native Hawaiian / Pacific Islander, not Hispanic00.0%
Some other race, not Hispanic2090.5%
Two or more races, not Hispanic1,9064.3%

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
43,745
Citizen Voting Age Population (CVAP)
35,573

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic41,60695.1%
Hispanic2,1414.9%
White30,15968.9%
Black9,33521.3%
Asian7651.7%
American Indian / Alaska Native260.1%
Native Hawaiian / Pacific Islander10.0%
Two or More Races2950.7%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic34,00895.6%
Hispanic1,5654.4%
White25,18570.8%
Black7,79621.9%
Asian8002.2%
American Indian / Alaska Native2910.8%
Native Hawaiian / Pacific Islander00.0%
Two or More Races300.1%

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