Study: Smaller counties driving US jail population growth

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NEW YORK (AP) — While big-city jails get most of the attention, lockups in small and medium-sized counties have actually driven the overall explosion in the U.S. inmate population, according to a new analysis of 45 years of jail statistics.

U.S. jails now hold nearly 700,000 inmates on any given day, up from 157,000 in 1970, and the Vera Institute of Justice found that smaller counties now hold 44 percent of the overall total, up from just 28 percent in 1978.

Jail populations in mid-sized counties with populations of 250,000 to 1 million residents grew by four times and small-sized counties with 250,000 residents or less grew by nearly seven times, Vera's analysis shows. In that time large county jail populations grew by only about three times.

Exactly what's behind that trend is not clear but experts say a range of factors likely contribute, from law enforcement's increased use of summonses and traffic tickets to the closing of state mental hospitals in that time.

"Everyone's jail problem is a little different," said Vera's Christian Henrichson.

Unlike state prisons that hold inmates doing lengthy terms, local jails and county lockups are generally used to house pretrial detainees or those who have been sentenced to serve stints of a year or less for relatively minor crimes.

Jail use continues to rise though crime rates have declined since peaking in 1991, the analysis shows. Blacks are jailed at nearly four times the rate of whites and the number of women locked up in jails has grown 14-fold since 1970, according to the Vera report.

The number of jails with 1,000 beds or more has soared from 21 in 1970 to 145 in 2014, and the average number of days people stay locked up in jail has grown from nine in 1978 to 23 in 2014, according to the statistics.

"To understand what's going on you have to look at the local context," said Nancy Fishman, who heads all jails-related work for the New York nonprofit's Center on Sentencing and Corrections. "A lot of the things we see, we don't have answers for yet."

To give local corrections officials and sheriffs better information about jail trends over time, Vera drew on federal statistics to create an online tool that maps a range of data for all of the roughly 3,000 county lockups. That will allow officials to compare their jail incarceration rates to similarly-situated counties based on total population, median income and arrest rates.

The push for more information comes as advocacy groups, federal prosecutors and others are forcing counties across the country to reform their local criminal justice systems to make them fairer — and cut ever increasing costs dedicated to running decades-old lockups that are often overcrowded.

In Oklahoma City, for example, the sheriff wants to build a $360 million jail to replace the current nearly 3,000-inmate jail that the U.S. Justice Department cited for unconstitutional conditions in 2008. But business leaders and others have opposed the proposal, arguing officials should instead study policy approaches that might lock up fewer people and better serve those with mental illnesses.

A parallel phenomenon has played out at the similar-sized jail in Marion County, Indiana, where advocates and others in Indianapolis fought back efforts to expand inmate beds, instead asking local officials to examine what's driving jail growth.

"People don't think about the jail most of the time until these moments when the question is: Do we build another one?" said Fishman. "Then the question is, Wait a minute, how are we using our jails in the first place?"


To view the tool, visit


This story has been corrected to show that Fishman heads jails work for Vera's Center on Sentencing and Correction, not the entire center.

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