Annual Survey of Jails, 2016

The Annual Survey of Jails (ASJ) is the only data collection effort that provides an annual source of data on local jails and jail inmates. Data on the size of the jail population and selected inmate characteristics are obtained every five to six years from the Census of Jails. In each of the years between the complete censuses, a sample survey of jails is conducted to estimate baseline characteristics of the nation's jails and inmates housed in these jails. The 2016 Annual Survey of Jails is the 29th such survey in a series begun in 1982. The ASJ supplies data on characteristics of jails such as admissions and releases, growth in the number of jail facilities, changes in their rated capacities and level of occupancy, growth in the population supervised in the community, changes in methods of community supervision, and crowding issues. The ASJ also provides information on changes in the demographics of the jail population, supervision status of persons held, and a count of non-U.S. citizens in custody. The data presented in this study were collected in the Annual Survey of Jails, 2016. These data are used to track growth in the number of jails and the capacities nationally, changes in the demographics of the jail population and supervision status of persons held, the prevalence of crowding issues, and a count of non-U.S. citizens within the jail population. The data are intended for a variety of users, including Federal and State agencies, local officials in conjunction with jail administrators, researchers, planners, and the public. The reference date for the survey is December 31, 2016.

《年度监狱调查》（ASJ）是唯一一项提供关于地方监狱及囚犯年度数据的收集活动。每隔五至六年，通过监狱普查获取有关监狱人口规模及选定的囚犯特征的数据。在每次全面普查之间，对监狱进行抽样调查，以估算全国监狱及关押在其中的囚犯的基线特征。2016年的年度监狱调查是该系列自1982年开始的第29次调查。ASJ提供了有关监狱特征的各类数据，如入狱与释放情况、监狱设施数量的增长、其额定容量和占用水平的变动、社区监督人数的增长、社区监督方法的变更以及拥挤问题。ASJ还提供了关于监狱人口人口统计学变化的详细信息、被监禁人员的监督状况以及拘押的非美国公民人数。本研究中呈现的数据均来自2016年年度监狱调查。这些数据用于追踪全国监狱数量及容量的增长、监狱人口人口统计学和被监禁人员监督状况的变更、拥挤问题的普遍性以及监狱人口中非美国公民人数的统计。这些数据旨在服务于多种用户，包括联邦和州级机构、地方官员与监狱管理员、研究人员、规划者以及公众。调查的参考日期为2016年12月31日。