Overview
- District ID
- az-sd-018
- State
- Arizona
- Chamber
- Upper chamber (state senate)
- District Code
- 018
- Land Area
- 95.3 sq mi
- Water Area
- 0.25 sq mi
Boundary
Boundary as GeoJSON
Source: U.S. Census Bureau TIGER/Line state legislative district boundaries.
Counties
| County | Overlap | Share of district land | Share of county land |
|---|
| Pima County | 95.27 sq mi | 100.0% | 1.0% |
Showing all 1 county
Places
Showing all 4 places
Overlapping Congressional Districts
| Congressional district | Population in both | Share of this district's population | Share of the congressional district's population | Share of this district's land |
|---|
| AZ District 6 | 235,713 | 96.8% | 29.7% | 98.0% |
| AZ District 7 | 7,698 | 3.2% | 1.0% | 2.0% |
Source: U.S. Census Bureau 2020 blocks and 2025 block equivalency files (119th Congress, 2024 state legislative plans).
Voters
- Registered Voters
- 134,275
- Active Voters
- 121,639 (90.6%)
Party Registration
| Party | Voters | Share |
|---|
| Democratic | 51,430 | 38.3% |
| Republican | 35,588 | 26.5% |
| Unaffiliated | 0 | 0.0% |
| Other parties | 8,658 | 6.4% |
| No party recorded | 38,599 | 28.7% |
Turnout by Cycle
| Cycle | General | Democratic Primary | Republican Primary |
|---|
| 2023–2024 | 98,828 (73.6%) | 26,895 (20.0%) | 18,804 (14.0%) |
| 2021–2022 | 77,884 (58.0%) | 26,254 (19.6%) | 17,559 (13.1%) |
| 2019–2020 | 91,939 (68.5%) | 27,678 (20.6%) | 16,013 (11.9%) |
| 2017–2018 | 67,401 (50.2%) | 18,619 (13.9%) | 13,291 (9.9%) |
| 2015–2016 | 67,595 (50.3%) | 13,496 (10.1%) | 11,941 (8.9%) |
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 01/05/2026. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".
Demographics
- Total Population
- 244,209 (± 4,339)
- Median Age
- 45.5
- Median Household Income
- $71,906 (± $2,244)
- High School Graduate or Higher (age 25+)
- 94.3%
- Bachelor's Degree or Higher (age 25+)
- 46.3%
Population by Age
| Group | People | Share |
|---|
| Under 18 | 38,946 | 15.9% |
| 18 to 64 | 141,384 | 57.9% |
| 65 and over | 63,879 | 26.2% |
Population by Race and Hispanic Origin
| Group | People | Share |
|---|
| Hispanic or Latino (any race) | 55,092 | 22.6% |
| White, not Hispanic | 153,072 | 62.7% |
| Black, not Hispanic | 9,265 | 3.8% |
| Asian, not Hispanic | 9,989 | 4.1% |
| American Indian / Alaska Native, not Hispanic | 1,969 | 0.8% |
| Native Hawaiian / Pacific Islander, not Hispanic | 240 | 0.1% |
| Some other race, not Hispanic | 1,198 | 0.5% |
| Two or more races, not Hispanic | 13,384 | 5.5% |
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
- 234,661
- Citizen Voting Age Population (CVAP)
- 196,544
Citizen Population by Race/Ethnicity
| Group | Citizens | Share |
|---|
| Non-Hispanic | 182,992 | 78.0% |
| Hispanic | 51,668 | 22.0% |
| White | 155,094 | 66.1% |
| Black | 8,549 | 3.6% |
| Asian | 7,196 | 3.1% |
| American Indian / Alaska Native | 1,983 | 0.8% |
| Native Hawaiian / Pacific Islander | 237 | 0.1% |
| Two or More Races | 1,280 | 0.5% |
Citizen Voting Age Population by Race/Ethnicity
| Group | CVAP | Share |
|---|
| Non-Hispanic | 158,601 | 80.7% |
| Hispanic | 37,952 | 19.3% |
| White | 137,500 | 70.0% |
| Black | 8,634 | 4.4% |
| Asian | 8,096 | 4.1% |
| American Indian / Alaska Native | 3,724 | 1.9% |
| Native Hawaiian / Pacific Islander | 212 | 0.1% |
| Two or More Races | 654 | 0.3% |
Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation (2020-2024 ACS 5-year).
