Riverside-San Bernardino-Ontario, CA, California: Tossup metro. In 2024, voted R+2%. Republican peak: R+53 in 1928.
Key facts
- 2024 presidential margin
- R+2MIT Election Lab
- Political archetype
- TossupAkashic typology
- Population
- 4,675,7042024 5-year
- Median household income
- $89,5052024 5-year
- White (non-Hispanic)
- 35.4%2024 5-year
- Black
- 7.1%2024 5-year
- Hispanic / Latino
- 53.1%2024 5-year
- Peak Democratic margin
- D+35 in 1912MIT Election Lab
- Peak Republican margin
- R+53 in 1928MIT Election Lab
Constituent county margins for Riverside-San Bernardino-Ontario, CA, CAOne 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 |
|---|---|---|---|---|---|
| R | 813,896 | 842,093 | 1,702,224 | ||
| D | 984,199 | 815,401 | 1,838,286 | ||
| D | 714,528 | 604,483 | 1,405,374 | ||
| D | 634,172 | 580,485 | 1,246,046 | ||
| D | 640,737 | 587,449 | 1,253,633 | ||
| R | 456,595 | 611,779 | 1,080,855 | ||
| R | 417,325 | 453,712 | 906,020 | ||
| R | 351,951 | 358,746 | 804,968 | ||
| D | 349,875 | 336,020 | 904,345 | ||
| R | 284,240 | 435,146 | 728,356 | ||
| R | 218,497 | 404,395 | 629,907 | ||
| R | 168,440 | 318,599 | 533,090 | ||
| R | 205,864 | 211,039 | 427,443 | ||
| R | 157,577 | 252,809 | 428,660 | ||
| R | 150,564 | 195,388 | 381,286 | ||
| D | 203,540 | 153,310 | 357,188 | ||
| R | 141,765 | 165,336 | 308,589 | ||
| R | 99,044 | 143,029 | 242,981 | ||
| R | 80,631 | 122,795 | 205,280 | ||
| R | 68,996 | 78,779 | 153,702 | ||
| D | 57,969 | 57,252 | 116,213 | ||
| D | 57,523 | 52,290 | 111,258 | ||
| D | 50,966 | 38,893 | 91,123 | ||
| D | 37,644 | 36,206 | 77,660 | ||
| R | 14,205 | 46,829 | 61,693 | ||
| R | 3,952 | 25,593 | 43,577 | ||
| R | 8,418 | 21,642 | 33,039 | ||
| R | 13,959 | 19,384 | 37,184 | ||
| O | 8,798 | 0 | 25,446 | ||
| R | 4,059 | 7,958 | 14,581 | ||
| R | 2,251 | 6,522 | 10,714 | ||
| R | 3,481 | 5,464 | 9,820 | ||
| R | 4,424 | 4,881 | 9,693 | ||
| R | 2,546 | 3,686 | 7,567 | ||
| R | 2,388 | 3,059 | 5,718 | ||
| R | 1,288 | 1,617 | 2,974 | ||
| R | 711 | 730 | 1,487 | ||
| R | 607 | 674 | 1,300 |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
6.0%
English
5.3%
Irish
4.9%
American
2.7%
Italian
2.6%
French
1.1%
Scottish
1.0%
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: 35.9 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
$89,505
Riverside-San Bernardino-Ontario, CA ranks near the middle of US counties.
Riverside-San Bernardino-Ontario, CA$89,505
California$99,122
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
11.9%
Children face moderate poverty.
Children under 1815.3%
Working age (18–64)10.6%
Seniors (65+)12.7%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
56.7%
speak English only
Spanish35.4%
Asian & Pacific Islander5.1%
Other Indo-European1.8%
Other languages1.1%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 56.6% of residents not counted as adherents by any reporting body.
Once reliably Republican exurban terrain, the Inland Empire has shifted markedly as Latino population growth and in-migration from coastal California have compressed margins in federal and statewide contests over the past two decades.
The metro's recent history is a story of close margins. The Democratic margin reached thirty-five points in 1912; the Republican margin reached fifty-three points in 1928. Most other elections have been decided by single-digit points.
Its demographics — a population of 4,675,704, a 35% non-Hispanic-white share, a median household income of $89,505 — situate the metro close to national averages on several dimensions.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Riverside-San Bernardino-Ontario, CA, California — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.akashic.app/cbsa/40140/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did Riverside-San Bernardino-Ontario, CA, California vote in 2024?
In 2024, Riverside-San Bernardino-Ontario, CA, California voted Republican by 1.7 points (R+2), carried by the Republican candidate. Out of 1,702,224 votes cast, 813,896 went Democratic and 842,093 went Republican.
What is Riverside-San Bernardino-Ontario, CA, California's political archetype?
Akashic classifies Riverside-San Bernardino-Ontario, CA, California as a "Tossup" metro based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the metro has voted Democratic 10 times, Republican 27 times, and other 1 times.
When did Riverside-San Bernardino-Ontario, CA, California last vote Democratic?
The most recent presidential election in which Riverside-San Bernardino-Ontario, CA, California voted Democratic was 2020.
How many people live in Riverside-San Bernardino-Ontario, CA, California?
Riverside-San Bernardino-Ontario, CA, California has a population of 4,675,704 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Riverside-San Bernardino-Ontario, CA, California?
Median household income in Riverside-San Bernardino-Ontario, CA, California is $89,505 — above the national median of $80,734. The California state median is $99,122.
What is the political history of Riverside-San Bernardino-Ontario, CA, California?
Akashic tracks 38 presidential elections in Riverside-San Bernardino-Ontario, CA, California from 1876 to 2024. Of those, 10 went Democratic and 27 went Republican. The metro's archetype — "Tossup" — captures the overall trajectory of that voting record.