Where Torah was learned, 1100 BCE to 2026, from the Great Yeshivas Global Historical Enrollment Census (v72, 2,215 observations)
1 CE
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How large were the yeshivot?
The great yeshivot of Lithuania and Hungary are remembered as vast. By the census's count they were, for their time, institutions of a few hundred; a single yeshiva today holds more students than the whole Vaad HaYeshivot network did in 1924. The figures below are approximate by design: the census records bounds and qualifiers, and the graphics round them to the scale a reader can hold.
The largest yeshivot of each age
Scroll. Each age opens with its largest yeshiva; keep scrolling and the ten next largest gather around it, every circle drawn to the same scale across all five ages.
Circle area is proportional to the largest recorded size within the period; labels give a rounded figure, not the census value. Ancient figures are literary traditions (the Talmud's twelve hundred at Sura, the four hundred at Pumbedita) and are drawn hollow; the seasonal kallah assemblies are left out. Click a circle to open the institution on the map.
The age of the kollel
The kollel, a house of married scholars supported to learn full time, is the newest of the yeshiva's forms and now the largest. The first modern kollel gathered about a dozen men in Kovno in 1877; Novardok's held sixty in 1896; Lakewood opened in 1943 with thirteen. In Israel today the married avreichim outnumber the unmarried yeshiva students two to one, and inside the great yeshivot themselves the kollel has become the larger house.
Bars share one linear scale, so the first kollelim appear as hairlines beside the Israeli totals; hover a hairline for its figure. Israeli figures count Haredi men in yeshivot gedolot and kollelim, from the Israel Democracy Institute's statistical reports (2014 and 2018 from the 2019 report; 2023 from Gilad Malach's 2024 analysis); the 2005 figure is the number of yeshiva and kollel students holding a deferment under the Tal Law, which does not separate the two. Kovno follows Stampfer's history of the Lithuanian yeshivot; Novardok and Lakewood are census rows. The institutional splits come from the census's research pass (Mir 2016–2024, Gur 2016–2017, Vizhnitz 2016, Ponevezh 2016 and 2025) and are not yet promoted to the ledger.
How many avreichim learn in the world today?
An estimate, built from the census and the published Israeli counts. Each dot is one hundred married men learning full time in a kollel. Filled dots are men a source counts. Hollow dots stand for kollelim we know exist but have not found an exact count for; each is allowed ten to forty men. Nine in ten of them sit in Israel; almost all the rest in America, where Lakewood alone is larger than the kollel population of every other country in the diaspora combined.
Israel: the Israel Democracy Institute's 2023 count of Haredi kollel students (110,333) as the floor and the Central Bureau of Statistics' 2021–22 count of all kollel students (122,427) as the ceiling. Other countries: kollelim in the census with a surviving count are summed at their latest figure; kollelim attested by name only are allowed ten to forty avreichim each, the range of the community kollelim the census does measure, and drawn at the midpoint. The American figure is the weakest: Lakewood is counted, but the large kollelim of Brooklyn, Monsey and Baltimore mostly lack a published roll, so the true number is likely higher than shown. Hover any country for its floor and ceiling.
Bibliography
The census source register, 1,328 items. Each institution panel on the map lists the sources behind its observations; this is the full register. Search by author, title, or what it was used for.
Research gaps and the research layer
Open questions from the census gap register, and the source-backed candidate observations collected by the research agents. Candidates are kept outside the core counts until promoted; here they are attached to the institution they describe wherever a name match was possible.
Research pass updates
Research notes without a usable place
Ḥeshbon
חשבון, an accounting
Evidence where anecdote has been doing the work: what a Jewish household or a Jewish institution actually pays, and who decides. Most of these datasets did not exist until a piece needed them. Each one is published alongside the work, with its sources and its limits, so you can check the arithmetic yourself.
The figures here are estimates built from public filings, published price pages and survey samples, and every piece states its own sources, sample sizes and limits in place. Tax filings run a year or more behind and get restated, posted prices change without notice, and a percentage describes the sample observed rather than the whole field. Several rest on small denominators or on voluntary reporting, noted where they appear. Where a number is our own arithmetic rather than a published one, the piece says so and shows the working.
Nothing here audits an individual institution or a person, and naming an organization is not a finding about its conduct. Ḥeshbon is independent of every body named on this site. None has reviewed, approved or funded the work, and where a ranking uses another organization's published figures as an input, that organization has not endorsed the result.
This is research rather than financial, tax, legal or immigration advice, and no one should decide about their own money on these pages alone. Israeli figures are current as of August 2026, at roughly three shekels to the dollar, and Israeli tax and benefit rules move faster than that. Corrections are made on the piece itself and noted there. If something here is wrong, write and it gets fixed.