US Presidents

1. 2024 expert rankings by first-entry period

Top 15Middle 15Bottom 15

The 2024 Presidential Greatness Project provides a documented basis for comparing historical assessments across three periods. Each president is assigned to the period in which he first took office, then grouped into the top, middle or bottom fifteen of the survey’s ranking. The resulting columns show how those thirds are distributed without implying that the periods contain equal numbers of presidents.

These are expert judgments collected before the 2024 election, not measurements of policy output or a verdict on events after the survey. Donald Trump’s second term is therefore outside the assessment, and Joe Biden’s presidency had not yet ended when respondents supplied their ratings. Cleveland is counted once despite his two non-consecutive terms. The named ranking is recorded in the table so that the grouping can be checked. Historical assessments can change as scholarship, evidence and perspectives change; the chart is best read as one dated survey rather than a permanent ordering of presidential quality.

Source: 2024 Presidential Greatness Project, Table 1. Published ordinal ranks; first-entry periods; 45 distinct people. Survey fieldwork November–December 2023.

2. Reported paternal-line country origins

England — 24Germany — 3Ireland — 3Kenya — 1Netherlands — 3Northern Ireland — 7Scotland — 4

England is the largest category in this retained paternal-line compilation, accounting for twenty-four of the forty-five entries. Northern Ireland is the next largest named group, followed by Scotland and several smaller categories. The pie gives a compact view of the source’s classification while making its narrow genealogical scope explicit.

A paternal-line origin follows one ancestral line and is not a complete account of a president’s ancestry. It should not be equated with nationality, ethnicity, citizenship or birthplace, and it says nothing about the many other branches of a family tree. The original page does not document the ancestor-selection rule or supply individual genealogy citations, so these counts remain labelled as reported rather than newly verified. Modern place names can also conceal changing historical borders. The later birthplace charts address a different, more directly defined question: where the presidents themselves were born. Keeping these topics separate avoids presenting an inherited ancestral label as though it described a person’s own national origin or identity.

Source: retained paternal-line compilation, total 45. Underlying genealogy and ancestor-selection method not supplied. Not a measure of complete ancestry, ethnicity or citizenship.

3. Birth regions by first-entry period

NortheastMidwestSouthWest

The early presidency draws heavily from the South, especially Virginia, while later periods show a broader geographic distribution. The Midwest becomes prominent among presidents first entering office between the Civil War and the early twentieth century. The modern group includes western birthplaces as well as the three other broad regions, giving the overall picture a wider geographic reach.

These are birth regions, not the states presidents represented politically or called home later in life. Dwight Eisenhower’s Texas birthplace, for example, is distinct from his strong association with Kansas. The groups follow modern Census-style regional boundaries, even for people born before the United States existed or before their birthplace became a state. Each distinct person counts once and is assigned by first entry into office; Cleveland and Trump do not create duplicate birthplaces. The table supplies the state and region labels for inspection. Regional totals describe the origins of this small historical group, not population-adjusted opportunities to reach the presidency.

Sources: Miller Center presidential biographies and presidential birth and office dates. Forty-five distinct presidents; Cleveland and Trump each count once. Dates and accumulated service are shown through 21 October 2026.

4. Completed degrees among post-war presidents

Bachelor’s — 7Graduate / professional — 6No completed university degree — 1

Among the fourteen distinct presidents who first entered office from Harry Truman through Joe Biden, seven held a bachelor’s degree as their highest completed university qualification, six held a graduate or professional degree, and one had no completed university degree. The categories distinguish completed qualifications from attendance, honorary awards or professional experience acquired outside a degree programme.

This replaces the earlier, undocumented period-by-period education classification with a clearly bounded modern comparison. Law degrees are included in the graduate or professional group, while military-academy bachelor’s degrees remain in the bachelor’s category. Donald Trump is counted once despite returning to office in 2025. A qualification is a biographical fact, not a measure of intelligence, judgment or presidential performance. The chart also does not rank universities or compare the content of different courses. The table identifies the modern category for each person; earlier presidents are left unclassified in that field rather than forced into labels that may fit their historical education poorly.

Scope: 14 distinct presidents first entering office in 1945–2021; highest earned qualification, honorary degrees excluded. Sources: Miller Center biographies; individual degree categories appear in the table.

5. Popularity of five presidents: historical snapshot

LikedDislikedOther / unclassified

Barack Obama and Jimmy Carter have the largest liked shares among these five figures in the retained popularity display. Donald Trump has a larger disliked than liked share, while the other four have positive balances on those two categories. The full stacked bars reveal the unclassified remainder rather than suggesting that all respondents expressed one of the two reported opinions.

The source page does not provide the fieldwork date, sample details or full question wording. These figures are therefore treated as an undated historical snapshot, not current polling or a list of living former presidents. They also measure a different concept from the job-approval averages in chart seven. Liking a political figure, assessing their work while in office and judging their historical importance can produce different answers. The grey portion is calculated as one hundred minus liked and disliked; without the questionnaire, it cannot safely be renamed neutral or undecided. The comparison is limited to the reported response distributions for these five people.

Source: retained five-person popularity series. Fieldwork date, audience and sample details not supplied. Not current polling; grey is the calculated unclassified remainder.

6. Largest winning popular-vote shares, 1920–2024

Lyndon Johnson’s 1964 victory has the largest popular-vote share in this comparison, narrowly ahead of Franklin Roosevelt’s 1936 result and Richard Nixon’s 1972 re-election. Each president appears only once, using his highest winning share within the stated period. That removes the duplicated Roosevelt entry from the earlier display and makes the ranking a comparison of people rather than repeated elections.

The scope begins in 1920 to avoid mixing modern national popular-vote totals with the incomplete and differently organised voting systems of the earliest elections. The values follow the American Presidency Project’s one-decimal summary. Popular-vote share is not the same as Electoral College share, turnout or the margin over the runner-up. A strong share can also arise in contests with different numbers of significant candidates. These bars describe election results, not public opinion throughout a presidency or an enduring mandate for every policy. The election year is included with each name so readers can connect the result to its particular historical contest.

Source: American Presidency Project, election margins. Highest winning share per president, elections 1920–2024; top ten distinct presidents. One-decimal source precision.

7. Average job approval during completed presidencies

John Kennedy has the highest average job approval in this post-war series, followed by Dwight Eisenhower. At the lower end, Donald Trump’s first-term average and Joe Biden’s completed-presidency average are close together. These figures summarise repeated Gallup measurements during time in office, making them different from the undated personal-popularity comparison earlier on the page.

An average compresses a changing record into one number. It can conceal large peaks, crises and recoveries, and presidents served for different lengths of time under very different circumstances. The chart should therefore not be treated as a controlled test of performance. Trump’s figure covers January 2017 to January 2021 only; his ongoing second term is excluded so that a partial new period is not silently mixed into the historical comparison. The standard blue bars reflect one common measure rather than party affiliation. Readers interested in the trajectory behind an average can follow Gallup’s source series, which provides the time dimension that this compact ranking leaves out.

Source: Gallup completed-presidency averages, January 2025. Trump: first term only. Biden: 2021–2025. No second-term Trump average included.

8. Youngest presidents at first taking office

Theodore Roosevelt was the youngest person to become president, taking office after William McKinley’s assassination. John Kennedy was slightly older when he entered the White House, but was the youngest person elected president. That distinction matters because the chart compares age at actually taking office rather than age on election day or the route by which the presidency was obtained.

Bill Clinton, Ulysses Grant and Barack Obama complete the five youngest first entrants in this dataset. Ages are calculated from birth and first-entry dates and shown in decimal years, so they are more precise than a whole-year label without suggesting that a few days explain political outcomes. A returning president is measured at the first entry, not at a later inauguration. The comparison says nothing by itself about experience, health or effectiveness: people of similar ages can have very different careers. Birth dates and office dates in the table make the calculation transparent and connect this small ranking with the complete presidential record.

Sources: Miller Center presidential biographies and presidential birth and office dates. Forty-five distinct presidents; Cleveland and Trump each count once. Dates and accumulated service are shown through 21 October 2026.

9. Reported presidential heights across time

The scatter plot places each reported height against the year the president first entered office. It preserves all forty-five people while avoiding a very crowded row of name labels on a small screen. Abraham Lincoln occupies the highest point in the retained estimates, while James Madison appears at the lower end. Tap or hover on a point to identify the president where supported.

These are historical height estimates reproduced from the existing page, not measurements collected under one consistent modern protocol. Differences in footwear, rounding and source quality can affect comparisons, especially when values are only a centimetre or two apart. The chart therefore shows a descriptive pattern rather than a precise biological trend. It also cannot establish that height helped someone win an election, since it includes only people who became president and lacks comparable candidate data. The table retains the named estimates so readers can inspect any point without depending on the plot alone. First-entry year supplies chronology, not a causal explanation.

Source: height estimates retained from US Presidents; first-entry dates from the biographical roster. Estimates are not standardised measurements.

10. Presidential service from 1945 to October 2026

The timeline shows the succession of presidents from Harry Truman’s entry in April 1945 to the stated October 2026 cutoff. Longer intervals indicate more time in office, while shorter ones include presidencies ended by death, resignation or an unsuccessful attempt to win a further term. The two Trump intervals remain separate, preserving the interruption between his presidencies.

A timeline endpoint can have two different meanings here. For former administrations it is the date service ended; for the final interval it is only the data cutoff, not a departure date or prediction. The chart deliberately avoids extending an ongoing term into the future. Calendar positions are displayed as fractional years, with exact dates retained in the reference table. This view also explains why presidential numbering and the number of distinct people differ: a non-consecutive return creates another administration without creating another person. The intervals provide chronological context, but their lengths should not be read as measures of public support, achievement or constitutional power.

Sources: Miller Center presidential biographies and presidential birth and office dates. Forty-five distinct presidents; Cleveland and Trump each count once. Dates and accumulated service are shown through 21 October 2026. Final interval ends at the data cutoff, not the end of the administration. Exact date ranges appear in the table.

11. Age at first entry and total service

This plot pairs a president’s age at first entry with the total time he has served across all recorded intervals. Franklin Roosevelt’s unusually long presidency stands apart vertically, while several people who served very briefly sit close to the bottom. Most observations occupy a much narrower range of service lengths than that exceptional upper point suggests.

The chart does not imply that entering office younger causes a longer presidency. Re-election, succession, death, resignation and constitutional rules all affect time served, and those circumstances differ across the historical record. Cleveland’s non-consecutive service is combined, as is Trump’s completed first term and second-term service up to the cutoff. Trump’s point can therefore move upward as the current administration continues; it is not a completed career total. Age is always measured at the first entry, keeping the horizontal definition consistent. The paired quantities are useful for exploring contrasting presidential paths, while the table provides the exact dates and accumulated days behind each point.

Sources: Miller Center presidential biographies and presidential birth and office dates. Forty-five distinct presidents; Cleveland and Trump each count once. Dates and accumulated service are shown through 21 October 2026.

12. Most common presidential birth states

Virginia — 8Ohio — 7New York — 5Massachusetts — 4North Carolina — 2Other birth states — 19

Virginia contributes the largest number of presidential birthplaces in this dataset, followed by Ohio. New York and Massachusetts also account for several presidents, while Pennsylvania is the next largest group. Combining the remaining birth states into one segment keeps the display legible while preserving the total of forty-five distinct people.

The count follows the location of birth rather than the state associated with a later political career. Modern state names are used for consistency, including births before statehood or independence. Andrew Jackson’s precise birthplace in the Carolina border region is disputed; his entry is kept in a separate Carolina label within the grouped remainder, so the uncertainty does not affect the leading-state ranking. Cleveland and Trump each contribute once despite their non-consecutive administrations. These are raw historical counts, not rates adjusted for population or the number of years a state existed. The full table supplies every birth-state label, allowing the broad concentration in the chart to be explored without losing the smaller contributors.

Sources: Miller Center presidential biographies and presidential birth and office dates. Forty-five distinct presidents; Cleveland and Trump each count once. Dates and accumulated service are shown through 21 October 2026.

13. Presidential service-length groups

Grouping total service lengths reveals the concentration around the familiar four- and eight-year presidential patterns, alongside shorter administrations and Franklin Roosevelt’s exceptional tenure beyond eight years. The chart counts distinct people, so non-consecutive intervals are added before assigning a service-length group. It provides a compact distribution that complements the individual points in the previous scatter plot.

Calendar years have different lengths, and inauguration dates have changed historically. The labels therefore use “about” for the four- and eight-year thresholds rather than pretending every ordinary term contains an identical number of days. The calculation uses a two-day tolerance around those benchmarks, with exact accumulated days available in the table. Short service can reflect succession near the end of a term, death, resignation or other circumstances; the bar alone does not explain the reason. Donald Trump’s accumulated service is measured only to the cutoff and belongs to an unfinished record. These groups describe duration, not a ranking of presidential success or electoral popularity.

Sources: Miller Center presidential biographies and presidential birth and office dates. Forty-five distinct presidents; Cleveland and Trump each count once. Dates and accumulated service are shown through 21 October 2026.

14. How presidents first entered the office

Presidential election — 36Vice-presidential succession — 9

Most presidents first reached the office following a presidential election, but nine initially entered through vice-presidential succession. The pie separates those two routes at the moment of first entry. It does not classify someone permanently as unelected: several successors later won a presidential election in their own right and served an additional term.

The succession group includes cases following a president’s death and Gerald Ford’s accession after Richard Nixon resigned. Ford’s own route to the vice-presidency was also unusual, but this chart focuses on entry to the presidency rather than every earlier office. A returning president is assigned according to his original entry, so Cleveland and Trump do not receive a second category. The count highlights a constitutional mechanism that has repeatedly shaped the history of the office. It should not be confused with the popular vote, since presidential election outcomes are determined through the constitutional electoral process. The table identifies each person’s first-entry route alongside the corresponding date.

Sources: Miller Center presidential biographies and presidential birth and office dates. Forty-five distinct presidents; Cleveland and Trump each count once. Dates and accumulated service are shown through 21 October 2026.

15. How each president’s final recorded service ended

Term ended — 35Died in office — 8Resigned — 1Ongoing at cutoff — 1

Most presidents in this dataset left office at the end of a term. Eight died while serving, and Richard Nixon is the only one whose final recorded service ended through resignation. Donald Trump is shown separately as serving at the cutoff, preventing an ongoing administration from being assigned an outcome that has not happened.

The unit is a distinct president’s final recorded interval, not every administration or every election. Grover Cleveland’s first departure in 1889 is therefore not counted as an additional exit, and Trump’s departure in 2021 is not treated as his final one after his return to office. “Term ended” includes different political circumstances, such as retirement, term limits or electoral defeat; the chart does not distinguish those reasons. Deaths in office are also combined rather than divided by cause. These clear boundaries make the total reconcile to forty-five people and complement the timeline by showing why an interval ended, while leaving detailed biographical explanations to the individual historical records.

Sources: Miller Center presidential biographies and presidential birth and office dates. Forty-five distinct presidents; Cleveland and Trump each count once. Dates and accumulated service are shown through 21 October 2026.

16. Presidents: biographical reference table

45 distinct people and fifteen columns. Non-consecutive service is listed separately and summed in days. Last endpoint for Donald Trump is the 21 October 2026 cutoff, not a departure date. Heights are retained estimates; degree categories cover the modern subset only.