Oregon 18th State Senate District, Oregon: Democratic loyalist district. In 2024, voted D+34%. Republican peak: R+58 in 1904.
Key facts
- 2024 presidential margin
- D+34MIT Election Lab
- Political archetype
- Democratic loyalistAkashic typology
- Population
- 73,8582024 5-year
- Median household income
- $107,7722024 5-year
- White (non-Hispanic)
- 63.5%2024 5-year
- Black
- 2.3%2024 5-year
- Hispanic / Latino
- 18.6%2024 5-year
- Peak Democratic margin
- D+35 in 2020MIT Election Lab
- Peak Republican margin
- R+58 in 1904MIT Election Lab
Constituent county margins for State Senate District 18, OROne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 23,558 | 11,303 | 36,366 | ||
| D | 25,674 | 12,116 | 39,173 | ||
| D | 18,741 | 10,174 | 32,925 | ||
| D | 16,545 | 11,492 | 28,986 | ||
| D | 17,310 | 10,907 | 28,938 | ||
| D | 14,814 | 13,112 | 28,287 | ||
| D | 11,087 | 10,528 | 22,743 | ||
| D | 9,370 | 7,976 | 19,537 | ||
| D | 8,258 | 6,988 | 20,447 | ||
| R | 7,318 | 8,196 | 15,801 | ||
| R | 5,454 | 9,279 | 14,785 | ||
| R | 4,637 | 6,991 | 13,618 | ||
| R | 4,262 | 6,405 | 11,081 | ||
| R | 3,411 | 5,376 | 9,201 | ||
| R | 2,806 | 4,171 | 7,318 | ||
| D | 3,556 | 2,545 | 6,137 | ||
| R | 2,169 | 3,108 | 5,281 | ||
| R | 1,715 | 2,691 | 4,406 | ||
| R | 1,369 | 2,476 | 3,862 | ||
| R | 1,152 | 1,401 | 2,640 | ||
| R | 1,114 | 1,145 | 2,284 | ||
| D | 1,055 | 1,023 | 2,092 | ||
| D | 1,057 | 507 | 1,665 | ||
| D | 835 | 514 | 1,415 | ||
| R | 433 | 754 | 1,208 | ||
| R | 257 | 514 | 1,118 | ||
| R | 277 | 605 | 934 | ||
| R | 411 | 598 | 1,064 | ||
| O | 175 | 154 | 570 | ||
| R | 141 | 284 | 458 | ||
| R | 60 | 281 | 384 | ||
| R | 136 | 202 | 361 | ||
| R | 192 | 255 | 453 | ||
| R | 36 | 194 | 364 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
14.2%
English
12.8%
Irish
9.1%
American
5.1%
Italian
3.1%
Scottish
2.6%
French
2.2%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 38.1 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$107,772
State Senate District 18 ranks near the middle of US counties.
State Senate District 18$107,772
Oregon$83,011
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
8.1%
Child poverty is below the national average.
Children under 188.6%
Working age (18–64)7.6%
Seniors (65+)10.9%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
74.2%
speak English only
Spanish12.2%
Asian & Pacific Islander6.8%
Other Indo-European5.1%
Other languages1.5%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 65.6% of residents not counted as adherents by any reporting body.
Anchored in the high desert and ranching communities of south-central Oregon, this district backed the 2024 Republican presidential nominee by more than 30 points, reflecting the rural, resource-economy electorate that defines much of the state's interior.
The Democratic margin in Oregon 18th State Senate District reached its widest at thirty-five points in 2020. The margin in 2024 was thirty-four points — still decisive.
Its loyalty is rooted in its place. Median household income of $107,772, a 64% non-Hispanic-white share, and a population of 73,858 together describe a district whose political habits are deeply settled.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
State Senate District 18, Oregon. Akashic. https://akashic.app/sld-upper/41018/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Senate District 18, Oregon vote in 2024?
In 2024, State Senate District 18, Oregon voted Democratic by 33.7 points (D+34), carried by the Democratic candidate. Out of 36,366 votes cast, 23,558 went Democratic and 11,303 went Republican.
What is State Senate District 18, Oregon's political archetype?
Akashic classifies State Senate District 18, Oregon as a "Democratic loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 13 times, Republican 20 times, and other 1 times.
When did State Senate District 18, Oregon last vote Republican?
The most recent presidential election in which State Senate District 18, Oregon voted Republican was 1988.
How many people live in State Senate District 18, Oregon?
State Senate District 18, Oregon has a population of 73,858 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State Senate District 18, Oregon?
Median household income in State Senate District 18, Oregon is $107,772 — above the national median of $80,734. The Oregon state median is $83,011.
What is the political history of State Senate District 18, Oregon?
Akashic tracks 38 presidential elections in State Senate District 18, Oregon from 1876 to 2024. Of those, 13 went Democratic and 20 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.