† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
2 counties by 2024 margin · County returns · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupRiverside-San Bernardino-Ontario, CACaliforniaUnited States
Mexican45.3%32.3%11.3%
Salvadoran1.6%2.0%0.7%
Guatemalan1.1%1.3%0.5%
Puerto Rican0.7%0.6%1.8%
Spaniard0.5%0.3%—
Spanish0.4%0.3%—
Colombian0.2%0.3%0.4%
Cuban0.2%—0.7%
German6.0%6.8%12.5%
English5.3%6.3%9.5%
Irish4.9%5.9%9.4%
American2.7%2.8%5.3%
Italian2.6%3.4%4.8%
French1.1%1.3%1.6%
Scottish1.0%0.9%1.3%
Polish0.9%0.9%2.2%
Filipino2.4%3.3%0.9%
Chinese1.7%3.9%1.3%
Asian Indian0.8%2.3%1.4%
Vietnamese0.8%1.7%0.6%
Korean0.5%1.2%0.4%
Japanese0.2%0.6%0.2%
African American†6.0%4.4%9.9%
African0.3%0.3%0.5%
Nigerian0.2%—0.2%
Aztec0.4%0.3%—
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Riverside-San Bernardino-Ontario, CA
California
United States
Median age
35.9
37.9
39.1
Age 18–24
9.6%
9.1%
9.2%
Age 65 and older
14.1%
15.6%
17.2%
Household economy
Measure
Riverside-San Bernardino-Ontario, CA
California
United States
Median household income
$89,505
$99,122
$84,427
Poverty rate
11.9%
12.0%
12.5%
Bachelor's degree or higher (25+)
24.5%
36.6%
35.6%
Languages at home
Measure
Riverside-San Bernardino-Ontario, CA
California
United States
Speaks a non-English language at home
43.3%
44.4%
22.3%
Spanish
35.4%
28.4%
13.6%
Other Indo-European
1.2%
3.4%
2.0%
Chinese (incl. Mandarin & Cantonese)
1.6%
3.5%
1.1%
Tagalog (incl. Filipino)
1.5%
2.1%
0.6%
Religious landscape
Measure
Riverside-San Bernardino-Ontario, CA
California
United States
Catholic
25.1%
26.2%
18.6%
Evangelical Protestant
10.2%
9.0%
16.5%
Unclaimed / not counted
56.7%
55.2%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Riverside-San Bernardino-Ontario, CA
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
1892
−15.1%
1896
−4.7%
1900
−20.2%
1904
−39.9%
1908
−26.7%
1912
+34.6%
1916
−14.6%
1920
−40.0%
1924
−49.7%
1928
−52.9%
1932
+1.9%
1936
+13.2%
1940
+4.7%
1944
+0.6%
1948
−6.4%
1952
−20.5%
1956
−18.1%
1960
−7.6%
1964
+14.1%
1968
−11.8%
1972
−22.2%
1976
−1.2%
1980
−28.2%
1984
−29.5%
1988
−20.7%
1992
+1.5%
1996
−0.8%
2000
−4.0%
2004
−14.4%
2008
+4.3%
2012
+4.3%
2016
+7.8%
2020
+9.2%
2024
−1.7%
DemocraticRepublican
34 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
47.8%Harris813,896
49.5%Trump842,093
1.2%Kennedy21,274 +4
R+1.7
R+10.8
R+0.2
1,702,119
All 7 candidates in 2024 · 5 minor / independent
Donald J TrumpRepublican49.5%842,093
Kamala D HarrisDemocratic47.8%813,896
Robert F Kennedy Jr.Independent1.2%21,274
Jill SteinIndependent0.8%13,041
Claudia De La CruzIndependent0.4%6,212
Chase OliverLibertarian0.3%5,510
OtherAll other candidates0.0%93
D
53.5%Biden984,199
44.4%Trump815,401
2.1%
D+9.2
D+1.4
D+4.7
1,838,286
D
50.8%Clinton714,528
43.0%Trump604,483
6.1%
D+7.8
D+3.5
D+5.7
1,405,374
D
50.9%Obama634,172
46.6%Romney580,485
2.5%
D+4.3
D+0.1
D+0.5
1,246,046
D
51.1%Obama640,737
46.9%McCain587,449
2.0%
D+4.3
D+18.6
R+3.0
1,253,633
R
42.2%Kerry456,595
56.6%Bush611,779
1.2%
R+14.4
R+10.3
R+11.9
1,080,855
R
46.1%Gore417,325
50.1%Bush453,712
3.9%
R+4.0
R+3.2
R+4.5
906,020
R
43.7%Clinton351,951
44.6%Dole358,746
11.7%
R+0.8
R+2.4
R+9.4
804,968
D
38.7%Clinton349,875
37.2%Bush336,020
24.2%
D+1.5
D+22.3
R+4.0
904,345
R
39.0%Dukakis284,240
59.7%Bush435,146
1.2%
R+20.7
D+8.8
R+13.0
728,356
R
34.7%Mondale218,497
64.2%Reagan404,395
1.1%
R+29.5
R+1.3
R+11.3
629,907
R
31.6%Carter168,440
59.8%Reagan318,599
8.6%
R+28.2
R+27.0
R+18.4
533,090
R
48.2%Carter205,864
49.4%Ford211,039
2.5%
R+1.2
D+21.0
R+3.3
427,443
R
36.8%McGovern157,577
59.0%Nixon252,809
4.3%
R+22.2
R+10.5
D+0.9
428,660
R
39.5%Humphrey150,564
51.2%Nixon195,388
9.3%
R+11.8
R+25.8
R+11.1
381,286
D
57.0%Johnson203,540
42.9%Goldwater153,310
0.1%
D+14.1
D+21.7
R+8.5
357,188
R
45.9%Kennedy141,765
53.6%Nixon165,336
0.5%
R+7.6
D+10.5
R+7.8
308,589
R
40.8%Stevenson99,044
58.9%Eisenhower143,029
0.4%
R+18.1
D+2.4
R+2.7
242,981
R
39.3%Stevenson80,631
59.8%Eisenhower122,795
0.9%
R+20.5
R+14.2
R+9.8
205,280
R
44.9%Truman68,996
51.3%Dewey78,779
3.9%
R+6.4
R+7.0
R+10.8
153,702
D
49.9%Roosevelt57,969
49.3%Dewey57,252
0.9%
D+0.6
R+4.1
R+6.9
116,213
D
51.7%Roosevelt57,523
47.0%Willkie52,290
1.3%
D+4.7
R+8.5
R+5.2
111,258
D
55.9%Roosevelt50,966
42.7%Landon38,893
1.4%
D+13.2
D+11.4
R+11.0
91,123
D
48.5%Roosevelt37,644
46.6%Hoover36,206
4.9%
D+1.9
D+54.7
R+15.9
77,660
R
23.0%Smith14,205
75.9%Hoover46,829
1.1%
R+52.9
R+3.2
R+35.4
61,693
R
9.1%Davis3,952
58.7%Coolidge25,593
32.2%
R+49.7
R+9.6
R+24.5
43,577
R
25.5%Cox8,418
65.5%Harding21,642
9.0%
R+40.0
R+25.4
R+13.8
33,039
R
37.5%Wilson13,959
52.1%Hughes19,384
10.3%
R+14.6
R+49.2
R+17.7
37,184
O
34.6%Wilson8,798
0.0%Taft0
65.4%
Roosevelt +30.8
D+61.3
D+15.0
25,446
R
27.8%Bryan4,059
54.6%Taft7,958
17.6%
R+26.7
D+13.1
R+17.2
14,581
R
21.0%Parker2,251
60.9%Roosevelt6,522
18.1%
R+39.9
R+19.7
R+20.2
10,714
R
35.4%Bryan3,481
55.6%McKinley5,464
8.9%
R+20.2
R+15.5
R+12.6
9,820
R
45.6%Bryan4,424
50.4%McKinley4,881
4.0%
R+4.7
D+10.4
D+1.4
9,693
R
33.6%Cleveland2,546
48.7%Harrison3,686
17.6%
R+15.1
—
R+16.7
7,567
Congressional elections · 3 Senate races
U.S. Senate
Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
Year
Won
Democratic
Republican
Total
2024
R
48.2%798,848
51.8%858,332
1,657,180
2022
R
49.3%508,093
50.7%523,157
1,031,250
2018
D
100.0%1,014,439
0.0%0
1,014,439
voter registration
Registered voters
By party of registration, over time
Party registration · 2024D+8.4
vs
Presidential vote · 2024R+1.7
Riverside-San Bernardino-Ontario, CA registers Democratic but votes Republican — a 10-point gap between how voters register and how they vote, the signature of ancestral registration that trails realignment.
2,539,899 registered voters · 2024 · up from 2,445,247 in 2022
Domestic migration in Riverside-San Bernardino-Ontario, CA in Riverside-San Bernardino-Ontario, CA: net domestic migration by year
Year
Net domestic migration
2011
+14,877
2012
+4,057
2013
−1,061
2014
+9,142
2015
+7,340
2016
+14,232
2017
+21,166
2018
+20,580
2019
+12,256
2021
+25,700
2022
+5,403
2023
−3,671
2024
−45
2025
+2,797
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.
Across the recorded series it reached a Democratic high of 34.6 points in 1912 and a Republican high of 52.9 points in 1928. Between 2020 and 2024 the metro moved 10.8 points toward the Republican candidate; the 2024 margin was 1.7 points.
A population of 4,675,704, a 28% non-Hispanic-white share, and a median household income of $89,505 describe the metro. The metro's voting pattern over the last decade is most similar to that of Fresno, CA and Modesto, CA.
Akashic
Political twins — metros
The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
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
Embed this page
A live widget for your site — no API key, attribution built in, CC BY 4.0. All widgets & sizes →
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+1.7), carried by the Republican candidate. Out of 1,702,119 votes cast, 813,896 went Democratic and 842,093 went Republican.
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 34 presidential elections in Riverside-San Bernardino-Ontario, CA, California from 1892 to 2024. Of those, 10 went Democratic and 23 went Republican.
