how many inmates in max?

[El Jefe]

It's very hard to get an estimate of this without going through the websites of all 50 states. For a very rough estimate,

Alabama, Holman Correctional Facility
200 single cells
168 death row cells
Arizona, Eyman,
Roughly 60% of the facility's 4544 beds are of the highest security level.
Arizona, US Penitentiary, Tucson
1580 beds, many of which are max
Arkansas, Varner Supermax
468 supermax beds, 1600 beds overall (many are max)
California, US Penitentiary, Atwater
1350 beds, many of which are max
California, Pelican Bay State Prison
1107 supermax prisoners at last count
California, California Correctional Institution
4484 beds, many are max or supermax
California, High Desert State Prison
2324 beds, all max
Colorado, Colorado State Penitentiary
984 supermax beds
Colorado, ADX Florence (the federal system's most restrictive prison)
437 supermax beds
Connecticut, Northern Correctional Institution
227 beds
Florida, United States Penitentiary, Coleman
3000 beds, many are max
Florida, Florida State Prison
1400 beds, many max or supermax
Idaho, Idaho Maximum Security Institution
population 435

Anyway, you get the idea. The federal system keeps it's highest security female inmates in Carswell, near Fort Worth, Texas. It's the federal prison hospital for women, but it has a 20-bed administrative unit, where all the federal death row females and female terrorists are held.