† 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
GroupCaldwellIdahoUnited States
English15.1%19.3%9.5%
German14.2%16.5%12.5%
Irish7.9%9.5%9.4%
American4.7%5.3%5.3%
Scottish2.7%3.2%1.3%
Italian2.3%2.9%4.8%
Norwegian2.2%2.4%—
French2.1%—1.6%
Mexican31.1%11.0%11.3%
Guatemalan0.7%0.2%0.5%
Salvadoran0.7%—0.7%
Spaniard0.7%0.4%—
Puerto Rican0.6%0.3%1.8%
Colombian0.6%0.2%0.4%
Spanish0.4%0.4%—
Peruvian0.3%0.2%—
Aztec3.7%——
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
Caldwell
Idaho
United States
Median age
31.5
37.6
39.1
Age 18–24
10.3%
9.8%
9.2%
Age 65 and older
9.9%
17.1%
17.2%
Household economy
Measure
Caldwell
Idaho
United States
Median household income
$73,058
$77,800
$84,427
Poverty rate
11.9%
10.7%
12.5%
Bachelor's degree or higher (25+)
19.5%
31.8%
35.6%
Languages at home
Measure
Caldwell
Idaho
United States
Speaks a non-English language at home
27.7%
11.0%
22.3%
Spanish
25.1%
8.1%
13.6%
Religious landscape
Measure
Caldwell
Idaho
United States
Catholic
—
11.1%
18.6%
Evangelical Protestant
—
12.4%
16.5%
Unclaimed / not counted
—
50.2%
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.
Caldwell, Idaho
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−41.0%
2008
−23.3%
2012
−19.7%
2016
−29.3%
2020
−28.0%
2024
−37.0%
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 sub-county results are estimated: the source's block-level detail for this cycle 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
R
30.1%Harris6,509
67.1%Trump14,521
2.8%
R+37.0
R+9.0
R+35.5
21,642
R
34.2%Biden6,818
62.2%Trump12,409
3.6%
R+28.0
D+1.2
R+32.5
19,944
R
29.2%Clinton4,621
58.5%Trump9,258
12.4%
R+29.3
R+9.6
R+31.4
15,837
R
38.8%Obama5,862
58.4%Romney8,833
2.8%
R+19.7
D+3.7
R+23.5
15,119
R
37.0%Obama4,943
60.3%McCain8,062
2.7%
R+23.3
D+17.7
R+30.6
13,364
R
29.1%Kerry3,265
70.1%Bush7,862
0.7%
R+41.0
—
R+38.6
11,209
Caldwell anchors Idaho's Treasure Valley with a Latino population exceeding 30%, making it one of the most demographically distinct cities in a heavily Republican state—and a consistent outlier in county-level voting patterns.
Across the recorded series it reached a Republican high of 41.0 points in 2004. Between 2020 and 2024 the city moved 9.0 points toward the Republican candidate; the 2024 margin was 37.0 points.
A population of 66,516, a 55% non-Hispanic-white share, and a median household income of $73,058 describe the city. The city's voting pattern over the last decade is most similar to that of Yucaipa and Nampa.
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, Caldwell, Idaho voted Republican by 37.0 points (R+37.0), carried by the Republican candidate. Out of 21,642 votes cast, 6,509 went Democratic and 14,521 went Republican.
How many people live in Caldwell, Idaho?
Caldwell, Idaho has a population of 66,516 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Caldwell, Idaho?
Median household income in Caldwell, Idaho is $73,058 — below the national median of $80,734. The Idaho state median is $77,800.
What is the political history of Caldwell, Idaho?
Akashic tracks 6 presidential elections in Caldwell, Idaho from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.
