Oregon State House District 18

State Legislative District Profile (Lower Chamber)

Overview

District ID
or-hd-018
State
Oregon
Chamber
Lower chamber
District Code
018
Land Area
1,441.1 sq mi
Water Area
5.46 sq mi

Boundary

Boundary of Oregon State House District 18

Boundary as GeoJSON

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

Counties

CountyOverlapShare of district landShare of county land
Clackamas County1080.62 sq mi75.0%57.8%
Marion County360.45 sq mi25.0%30.5%

Showing all 2 counties

Places

PlaceOverlapShare of district landShare of place land
Mulino CDP7.52 sq mi0.5%54.6%
Silverton city3.51 sq mi0.2%100.0%
Molalla city2.42 sq mi0.2%96.3%
Mount Angel city1.14 sq mi0.1%100.0%
Butteville CDP1.05 sq mi0.1%100.0%
Hubbard city0.71 sq mi<0.1%89.1%
Aurora city0.48 sq mi<0.1%100.0%
Scotts Mills city0.36 sq mi<0.1%99.9%
St. Paul city0.29 sq mi<0.1%100.0%
Donald city0.28 sq mi<0.1%74.3%
Barlow city0.05 sq mi<0.1%100.0%

Showing all 11 places

Overlapping Congressional Districts

Congressional districtPopulation in bothShare of this district's populationShare of the congressional district's populationShare of this district's land
OR District 557,70981.0%8.2%87.2%
OR District 611,98116.8%1.7%6.0%
OR District 31,5942.2%0.2%6.8%

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

Voters

Registered Voters
62,045
Active Voters
53,604 (86.4%)

Party Registration

PartyVotersShare
Democratic12,52820.2%
Republican22,19135.8%
Unaffiliated23,07637.2%
Other parties4,2506.8%
No party recorded00.0%

Turnout by Cycle

CycleGeneralDemocratic PrimaryRepublican Primary
2023–202441,228 (66.4%)0 (0.0%)0 (0.0%)
2021–202235,103 (56.6%)0 (0.0%)0 (0.0%)
2019–202039,823 (64.2%)0 (0.0%)0 (0.0%)
2017–201829,692 (47.9%)0 (0.0%)0 (0.0%)
2015–201631,270 (50.4%)0 (0.0%)0 (0.0%)
2013–201423,076 (37.2%)0 (0.0%)0 (0.0%)
2011–201225,794 (41.6%)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 10/02/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Population
70,315 (± 2,363)
Median Age
39.8
Median Household Income
$89,063 (± $4,961)
High School Graduate or Higher (age 25+)
88.3%
Bachelor's Degree or Higher (age 25+)
23.5%

Population by Age

GroupPeopleShare
Under 1816,73923.8%
18 to 6441,31358.8%
65 and over12,26317.4%

Population by Race and Hispanic Origin

GroupPeopleShare
Hispanic or Latino (any race)10,26314.6%
White, not Hispanic54,53077.6%
Black, not Hispanic4660.7%
Asian, not Hispanic7761.1%
American Indian / Alaska Native, not Hispanic2920.4%
Native Hawaiian / Pacific Islander, not Hispanic1040.1%
Some other race, not Hispanic1580.2%
Two or more races, not Hispanic3,7265.3%

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
67,527
Citizen Voting Age Population (CVAP)
50,783

Citizen Population by Race/Ethnicity

GroupCitizensShare
Non-Hispanic59,69488.4%
Hispanic7,82411.6%
White55,64982.4%
Black4630.7%
Asian6771.0%
American Indian / Alaska Native2920.4%
Native Hawaiian / Pacific Islander990.1%
Two or More Races4210.6%

Citizen Voting Age Population by Race/Ethnicity

GroupCVAPShare
Non-Hispanic47,00192.6%
Hispanic3,7817.4%
White44,19187.0%
Black2850.6%
Asian1,2042.4%
American Indian / Alaska Native9271.8%
Native Hawaiian / Pacific Islander630.1%
Two or More Races3350.7%

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