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.
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.
Riverside-San Bernardino-Ontario, CA, California. Akashic. https://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.