On the heels of King County’s announcement in 2009 that it would no longer accept misdemeanor inmates from area jails after 2012, the cities of Auburn, Burien, Des Moines, Federal Way, SeaTac and Tukwila got together, financed, built, and in 2011 opened the SCORE jail in Des Moines.

On Monday, Auburn Mayor Nancy Backus presented some of the latest jail statistics to the Auburn City Council.

In March, before it dropped in April, the SCORE jail’s billable average daily population for the member cities was at an all-time high of 331 inmates.

“We don’t have any specific reasons for the increase, or the decrease in April, at this point,” Backus said.

During March, the total average daily population (TADP) for all the member cities and the 33 contract agencies by month and by year was at an all-time high of 672. In April the TADP was 636.

Auburn’s billable average daily population was 81 in January, and by April it had declined to 57 in April.

Historically, Auburn’s billable, average daily population fell from 100 in 2012 to a median of 66 in 2014. As City officials point out, that decrease followed the City’s decision to switch from Auburn Municipal Court to King County District Court.

Full bookings for member and contract agencies were at 1808 in April, with average daily bookings of 60, slightly down from March.

Auburn’s booking population for April of 2015 was 254, giving the City one of the largest inmate populations except for Federal Way, which had roughly 265 bookings at the peak.

As for member agency bookings by type, 442 (46 percent) of the bookings were for outstanding warrants, 327 were for new arrests, 114 were for custody transfers, 58 were felony transfers to King County and 17 were for 17 felony investigations.

As for contract agency bookings, the Department of Corrections had 143, or 44 percent of the total, and among the remaining 32, the cities of Fife, Shoreline, Kenmore and Pacific had 62, 45, 21 and 3, respectively.