Administration Services Division
Jail Statistics
The number of people admitted to jail (Admissions/Bookings), the number of people released from jail (Releases), Average Daily Population (ADP), and Average Length of Stay (ALOS) are all ways of looking at how busy the jail is.
The following tables and charts show the key statistics that the Department tracks:
- Bookings, Releases, ADP, and ALOS 1996 - 2008
- Number of Bookings 1996 - 2008
- Number of Releases 1996 - 2008
- Average Daily Population 1996 - 2008
- Average Length of Stay 1996 - 2008
- Additional Tables:
- Number of Bookings/Admissions by Race, Sex and Year 1996 - 2008
- Average Daily Population by Race, Sex and Year 1996 - 2008
- Average Daily Population by Offense Category 2008
Bookings, Releases, ADP, and ALOS
1996-2008
Year
Bookings
Releases
ADP
ALOS
1996
57,083
57,034
2,332.3
15
1997
57,102
56,705
2,476.1
15.7
1998
61,296
61,317
2,752.5
16.2
1999
59,886
59,743
2,831.9
17.3
2000
60,983
60,976
2,951.4
18
2001
56,399
56,230
2,905.8
18.6
2002
54,005
54,742
2,648.3
18.5
2003
53,358
53,187
2,392.5
16.1
2004
49,613
49,619
2,453.6
17.7
2005
50,625
50,428
2,599.6
18.4
2006
53,432
53,248
2,665.0
18.1
2007
53,696
53,844
2,725.5
18.5
2008
48,233
48,465
2,575.0
19.7
Additional Tables
We receive many requests regarding the number of bookings and the Average Daily Population by sex and race of inmates in our jail facilities. The following tables provide this information for the last decade. There is also a chart that displays the Average Daily Population by offense category for 2008.
Number of Bookings/Admissions by Race, Sex and Year
1996-2008
White
Black
Asian
Native American
Other/Unknown
TOTAL
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
YEAR
N
N
N
N
N
N
N
N
N
N
N
1996
6,131
29,220
3,780
14,156
276
1,711
462
1,193
29
125
57,083
1997
6,541
29,440
3,506
13,726
291
1,875
460
1,126
21
116
57,102
1998
7,340
31,850
3,629
14,064
379
2,163
512
1,220
20
119
61,296
1999
7,362
31,600
3,422
13,230
369
2,125
507
1,137
12
122
59,886
2000
7,637
32,678
3,246
13,081
402
2,133
534
1,141
14
117
60,983
2001
7,578
29,633
3,007
12,196
341
1,997
495
1,019
18
115
56,399
2002
7,239
27,720
2,880
12,347
365
1,921
467
948
20
98
54,005
2003
6,810
26,705
2,996
12,714
392
2,106
471
1,009
12
143
53,358
2004
6,350
23,978
2,960
12,391
347
2,063
474
920
18
112
49,613
2005
6,290
24,148
2,946
12,913
385
2,328
509
988
16
102
50,625
2006
6,786
25,120
3,348
13,870
457
2,222
575
964
13
77
53,432
2007
6,756
25,539
3,185
13,971
438
2,248
532
934
11
82
53,696
2008
5,835
22,688
2,814
12,992
400
2,017
459
885
23
120
48,233
Average Daily Population by Race, Sex and Year
1996-2008
White
Black
Asian
Native American
Other/Unknown
TOTAL
Female
Male
Female
Male
Female
Male
Female
Male
Female
Male
YEAR
ADP
ADP
ADP
ADP
ADP
ADP
ADP
ADP
ADP
ADP
ADP
1996
140.7
1,166.2
107.4
765.3
3.3
64.6
14.7
64.4
0.4
5.3
2,332.3
1997
153.7
1,253.6
116.3
784.5
5.4
81.2
13.2
62.3
0.9
5.1
2,476.1
1998
176.3
1,394.5
124.6
855.0
6.1
110.0
15.4
65.0
1.1
4.5
2,752.5
1999
185.3
1,460.8
127.4
853.5
5.7
103.9
18.0
70.7
1.1
5.5
2,831.9
2000
200.9
1,548.7
124.3
858.5
6.5
114.2
20.9
71.7
0.2
5.4
2,951.4
2001
213.8
1,517.3
120.2
857.2
6.1
98.5
20.2
66.4
0.7
5.3
2,905.8
2002
188.3
1,378.5
106.3
795.4
6.6
94.4
15.9
57.7
0.6
4.6
2,648.3
2003
170.2
1,195.4
96.6
754.4
6.5
95.2
14.5
55.0
0.1
4.7
2,392.5
2004
167.8
1,191.0
101.2
798.8
7.3
112.4
16.2
53.7
0.4
5.0
2,453.6
2005
189.8
1,237.4
109.7
837.8
9.6
132.6
21.7
55.5
0.4
5.1
2,599.6
2006
197.5
1,256.3
126.9
866.5
13.1
132.0
20.5
47.1
0.3
4.7
2,665.0
2007
199.5
1,294.7
128.0
877.1
14.9
135.5
19.0
52.2
0.7
4.1
2,725.5
2008
188.1
1,236.9
108.2
838.7
12.5
125.2
17.5
41.7
0.7
5.4
2,575.0
Definitions
Bookings/Admissions: The process of identifying, fingerprinting, and gathering information about an arrested person who is being admitted to jail. Bookings are event based versus person based. In other words, some people are booked more than one time during the year. Number of Bookings is the total number of Bookings in the year.
Releases: Number of Releases is the total number of Releases in the year.
Average Daily Population (ADP): Average number of inmates who are confined in the King County Correctional Facility or Regional Justice Center, or partially confined in Work Education Release or Electronic Home Detention per day during the year.
Average Length of Stay (ALOS): Average number of days a person spends in a program or jail.
