State rankings

Most Republican States

California has the highest Registered Republicans in 2025 (5,776,356), followed by Florida (5,522,017) and Pennsylvania (3,631,497). District of Columbia has the lowest (24,272).

Politics & Government51 states · 4 metricsUpdated Mar 21, 2025Original page
5 sources
31 of 51 states
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Registered Republicans, 2025

Darker means higher. Click a place to highlight it.

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All 31 ranked

Highest first.

Distribution Median and middle halfThe median is the middle value: half of places are above it, half below. The middle half is the range holding the central 50% of places.More in the glossary →

Each dot is one state; the lines mark the median and the middle half.

Median
694,599
Middle half 373.7K – 1.4M
Average
1,218,715
31 states
Highest
5,776,356
California
Lowest
24,272
District of Columbia

Over time · 2022–2025

The top 5 in 2025, against the median.

  • Median of all states
  • California
  • Florida
  • Pennsylvania
  • New York
  • North Carolina

Data

Click a column to sort, a row to highlight that place on the charts.

31 states · # = rank by Registered Republicans
#
1California5,776,35625.2%
2Florida5,522,01740.6%
3Pennsylvania3,631,49741.0%
4New York2,845,29522.9%
5North Carolina2,289,88130.4%
6New Jersey1,624,43724.7%
7Arizona1,602,30835.9%
8Kentucky1,582,69947.5%
9Oklahoma1,264,71653.5%
10Louisiana1,049,79035.2%
11Maryland1,032,21724.0%
12Colorado940,27123.0%
13Utah931,62252.8%
14Kansas900,07845.1%
15Oregon732,07024.1%
16Iowa694,59939.4%
17Idaho627,25061.8%
18Nebraska623,53949.6%
19Nevada614,58628.8%
20West Virginia497,84542.1%
21Connecticut488,04121.2%
22New Mexico434,92732.4%
23Massachusetts423,3878.42%
24New Hampshire324,10133.1%
25South Dakota321,66350.9%
26Maine311,16629.9%
27Wyoming212,27477.2%
28Delaware202,81025.5%
29Alaska146,15524.4%
30Rhode Island108,28114.5%
31District of Columbia24,2725.11%

What correlates with Registered Republicans (2025)?

Pearson r against 2,082 other state metrics sharing at least 19 states, 1 near-identical series hidden. Ranks are read by standing: a better rank counts as higher, whether rank 1 is the best place on a list or the worst. Correlation is not causation.

Higher together

Places that have a higher Registered Republicans tend to score higher on these (or rank better)

  1. Trump VotesNational Popular Vote by State
    r = +0.99 · very strong · n = 31
    Plot
  2. Total Retail SalesElectricity Cost by State
    r = +0.98 · very strong · n = 31
    Plot
  3. Veteran PopulationArmy Reserve Units by State
    r = +0.98 · very strong · n = 30
    Plot
  4. Cancer-Related DeathsCancer Rates by State
    r = +0.97 · very strong · n = 31
    Plot
  5. Tried to QuitSmoking Rates by State
    r = +0.97 · very strong · n = 31
    Plot
  6. Current SmokersSmoking Rates by State
    r = +0.97 · very strong · n = 31
    Plot

Opposite directions

Places that have a higher Registered Republicans tend to score lower on these (or rank worse)

  1. FTE Convictions RankMost Corrupt StatesA rank: rank 1 is the worst
    r = −0.75 · very strong · n = 30
    Plot
  2. Number of SeasonsAll Four Seasons States
    r = −0.59 · strong · n = 31
    Plot
  3. Req. English CreditsHigh School Graduation Requirements by State
    r = −0.59 · strong · n = 28
    Plot
  4. Heating Degree Days per YearClimate by State (1991–2020 Averages)
    r = −0.55 · strong · n = 29
    Plot
  5. White Alone % RegisteredVoters by Race by State
    r = −0.54 · strong · n = 31
    Plot
  6. White Alone or in Combination % RegisteredVoters by Race by State
    r = −0.53 · strong · n = 31
    Plot

Quick answers

Which state has the highest Registered Republicans?
California has the highest Registered Republicans in 2025, at 5,776,356, followed by Florida (5,522,017) and Pennsylvania (3,631,497).
Which state has the lowest Registered Republicans?
District of Columbia has the lowest Registered Republicans in 2025, at 24,272.
What is the median Registered Republicans across US states?
The median is 694,599 across the 31 US states with data in 2025.
Where does this most republican states data come from?
Rankodex compiles it from World Population Review and the primary sources it cites: Partisan Voting Index - Cook Political Report; 2024 United States presidential election - Wiki; 2020 United States presidential election - Wiki; 2016 United States presidential election - Wiki.