2007年7月份北京市城镇居民低保情况统计表地区城镇居民最低生活保障人数城镇最低生活保障家庭数城镇最低生活保障累计支出人均支出水平(人)(户)(万元)(元)北京市1477387247427264.2260.41东城区1444270762762.8269.70西城区1173962382147.7261.13崇文区883547101871.7284.90宣武区1462370752851.7277.03朝阳区1408469582743.0280.57丰台区1448568692666.2263.64石景山区1366160692774.6285.59海淀区925346201768.6270.78门头沟区1532965592800.4257.60房山区838838231184.4202.77通州区40912129646.5220.16顺义区1452876283.6283.40昌平区1517996292.8267.25大兴区1317747238.1248.07怀柔区32851670393.0172.82平谷区58382192740.5165.40密云县1297750242.6261.79延庆县185l866275.9210.842007年7月份北京市下列各区县中城镇居民最低生活保障人数最少的是( )。