http://cssr.berkeley.edu/ucb_childwelfare/C3M3.aspx (I found it by putting the stats into this)
In Care 3 Years Or Longer (Emancipated Or Age 18 In Care)
Emancipated or age 18 in care during the year: In care 3 years or longer
Agency Type=Child Welfare
Apr 1, 2006 to Mar 31, 2007
Selected Subset: Age Class: 18
Selected Subset: Ethnic Group: Black,White,Hispanic,Asian/PI,Nat Amer,Missing
Selected Subset: Gender: Female,Male,Missing/Unknown
Selected Subset: Last Placement Type: Pre-Adopt,Kin,Foster,FFA,Court Specified,Group,Shelter,Guardian,Other,Missing
Selected Subset: Last Caregiver Relationship: Nonrelative Guardian,Nonrelative Nonguardian,Relative Guardian,Relative Nonguardian,Missing
County
Exiting to emancipation
or age 18 in
care
In care 3 years
or longer
%
California
4,240
2,764
65.2%
Alameda
236
152
64.4%
Alpine
.
.
.
Amador
.
.
.
Butte
31
19
61.3%
Calaveras
7
7
100.0%
Colusa
2
.
.
Contra Costa
118
90
76.3%
Del Norte
1
1
100.0%
El Dorado
9
3
33.3%
Fresno
157
119
75.8%
Glenn
6
4
66.7%
Humboldt
10
8
80.0%
Imperial
14
8
57.1%
Inyo
1
1
100.0%
Kern
125
83
66.4%
Kings
9
8
88.9%
Lake
5
4
80.0%
Lassen
4
4
100.0%
Los Angeles
1,575
1,069
67.9%
Madera
11
6
54.5%
Marin
9
2
22.2%
Mariposa
2
1
50.0%