† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · 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
GroupMonroviaCaliforniaUnited States
Mexican33.0%32.3%11.3%
Salvadoran4.3%2.0%0.7%
Guatemalan2.8%1.3%0.5%
Honduran0.6%—0.3%
Puerto Rican0.5%0.6%1.8%
Cuban0.4%—0.7%
Nicaraguan0.4%0.3%—
Colombian0.4%0.3%0.4%
German6.2%6.8%12.5%
Irish5.4%5.9%9.4%
English5.4%6.3%9.5%
American4.4%2.8%5.3%
Italian3.6%3.4%4.8%
Armenian2.9%——
Polish1.6%0.9%2.2%
French1.4%1.3%1.6%
Chinese4.7%3.9%1.3%
Filipino3.7%3.3%0.9%
Korean2.1%1.2%0.4%
Asian Indian1.1%2.3%1.4%
Vietnamese1.1%1.7%0.6%
Japanese1.0%0.6%0.2%
Taiwanese0.4%0.3%—
Cambodian0.3%——
African American†5.0%4.4%9.9%
African0.3%0.3%0.5%
Nigerian0.2%—0.2%
Jamaican0.2%—0.4%
Aztec8.8%0.3%—
Maya5.3%——
Samoan1.8%——
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
Monrovia
California
United States
Median age
38.3
37.9
39.1
Age 18–24
6.4%
9.1%
9.2%
Age 65 and older
14.7%
15.6%
17.2%
Household economy
Measure
Monrovia
California
United States
Median household income
$96,021
$99,122
$84,427
Poverty rate
10.3%
12.0%
12.5%
Bachelor's degree or higher (25+)
42.7%
36.6%
35.6%
Languages at home
Measure
Monrovia
California
United States
Speaks a non-English language at home
43.6%
44.4%
22.3%
Spanish
30.1%
28.4%
13.6%
Chinese (incl. Mandarin & Cantonese)
6.7%
3.5%
1.1%
Tagalog (incl. Filipino)
2.3%
2.1%
0.6%
Other Asian & Pacific Island
1.2%
2.0%
1.1%
Religious landscape
Measure
Monrovia
California
United States
Catholic
—
26.2%
18.6%
Evangelical Protestant
—
9.0%
16.5%
Unclaimed / not counted
—
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.
Monrovia, California
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+7.5%
2008
+21.5%
2012
+21.7%
2016
+31.1%
2020
+34.1%
2024
+29.4%
DemocraticRepublican
6 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. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004, 2012, 2024 sub-county results are estimated: the source's block-level detail for these cycles was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
D
63.1%Harris11,165
33.7%Trump5,962
3.2%
D+29.4
R+4.7
D+30.9
17,695
D
65.9%Biden12,730
31.7%Trump6,131
2.4%
D+34.1
D+3.0
D+29.7
19,331
D
62.0%Clinton9,453
30.9%Trump4,711
7.0%
D+31.1
D+9.5
D+29.0
15,238
D
59.6%Obama8,871
37.9%Romney5,647
2.5%
D+21.7
D+0.2
D+17.8
14,887
D
60.6%Obama8,953
39.1%McCain5,777
0.3%
D+21.5
D+14.0
D+14.2
14,771
D
53.2%Kerry7,878
45.7%Bush6,767
1.1%
D+7.5
—
D+10.0
14,809
Monrovia sits at the base of the San Gabriel Mountains, where a historically moderate-to-conservative suburban electorate has shifted incrementally toward competitive territory over the past decade as demographic composition continues to evolve.
Across the recorded series it reached a Democratic high of 34.1 points in 2020. Between 2020 and 2024 the city moved 4.7 points toward the Republican candidate; the 2024 margin was 29.4 points.
A population of 37,571, a 30% non-Hispanic-white share, and a median household income of $96,021 describe the city. The city's voting pattern over the last decade is most similar to that of Cathedral City and Duncanville.
Akashic
Political twins — cities
The cities 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.
In 2024, Monrovia, California voted Democratic by 29.4 points (D+29.4), carried by the Democratic candidate. Out of 17,695 votes cast, 11,165 went Democratic and 5,962 went Republican.
How many people live in Monrovia, California?
Monrovia, California has a population of 37,571 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Monrovia, California?
Median household income in Monrovia, California is $96,021 — above the national median of $80,734. The California state median is $99,122.
What is the political history of Monrovia, California?
Akashic tracks 6 presidential elections in Monrovia, California from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
