Home › Compare Los Angeles County vs Harris County Side-by-side: the political memory, the demographic profile, and the deepest deltas between these two places.
Latest D+32.9 in 2024
Population 9,808,667 2024 ACS
County seat Los Angeles CA
Most similar Santa Clara County CA · twin score 100.0
2024 presidential margin D+32.9 MIT Election Lab
Population 9,808,667 2024 5-year
Median household income $90,112 2024 5-year
White (non-Hispanic) 24.7% 2024 5-year
Black 7.4% 2024 5-year
Hispanic / Latino 48.4% 2024 5-year
County seat Los Angeles
Peak Democratic margin D+49.3 in 2016 MIT Election Lab
Peak Republican margin R+58.2 in 1924 MIT Election Lab presidential history
Margin, 1892–2024 (partial returns from 1876) Presidential margin over time Democratic-minus-Republican presidential margin from 1876 to 2024. Most recent: +32.9% in 2024. flipped D · 1988 +32.9% D R 1876 2024 Presidential margin over time Year Margin (D minus R) 1876 +8.6% 1880 −1.0% 1884 −8.4% 1888 −14.6% 1892 −9.2% 1896 −2.5% 1900 −17.3% 1904 −46.0% 1908 −26.6% 1912 +33.3% 1916 −8.0% 1920 −47.5% 1924 −58.2% 1928 −41.5% 1932 +18.6% 1936 +35.4% 1940 +17.6% 1944 +14.1% 1948 +0.5% 1952 −12.6% 1956 −11.1% 1960 +0.8% 1964 +14.9% 1968 −1.6% 1972 −12.7% 1976 +1.9% 1980 −10.0% 1984 −10.1% 1988 +5.0% 1992 +23.5% 1996 +28.4% 2000 +31.1% 2004 +27.5% 2008 +40.4% 2012 +41.9% 2016 +49.3% 2020 +44.0% 2024 +32.9%
Latest D+5.5 in 2024
Population 4,838,303 2024 ACS
County seat Houston TX
Most similar Loudoun County VA · twin score 96.0
2024 presidential margin D+5.5 MIT Election Lab
Population 4,838,303 2024 5-year
Median household income $74,983 2024 5-year
White (non-Hispanic) 26.6% 2024 5-year
Black 18.6% 2024 5-year
Hispanic / Latino 44.0% 2024 5-year
County seat Houston
Peak Democratic margin D+75.7 in 1936 MIT Election Lab
Peak Republican margin R+25.6 in 1972 MIT Election Lab presidential history
Margin, 1892–2024 (partial returns from 1876) Presidential margin over time Democratic-minus-Republican presidential margin from 1908 to 2024. Most recent: +5.5% in 2024. flipped D · 2008 +5.5% D R 1908 2024 Presidential margin over time Year Margin (D minus R) 1908 +47.8% 1912 +62.2% 1916 +52.2% 1920 +24.5% 1924 +36.0% 1928 −11.6% 1932 +68.4% 1936 +75.7% 1940 +55.8% 1944 +56.9% 1948 +12.5% 1952 −15.3% 1956 −24.2% 1960 −6.1% 1964 +19.2% 1968 −4.1% 1972 −25.6% 1976 −5.2% 1980 −19.8% 1984 −23.1% 1988 −14.9% 1992 −4.9% 1996 −4.1% 2000 −11.4% 2004 −10.2% 2008 +1.6% 2012 +0.1% 2016 +12.3% 2020 +13.3% 2024 +5.5%
Top 9 deltas, ranked by absolute magnitude. Metric Los Angeles County Harris County Population 9,808,667 4,838,303 Median household income $90,112 $74,983 Latest presidential margin D+32.9 D+5.5 Black 7.4% 18.6% Asian 14.9% 7.3% Hispanic / Latino 48.4% 44.0% Median age 38.2 34.6 Poverty rate (overall) 13.7% 16.3% White (non-Hispanic) 24.7% 26.6%
