Legend
CD = Congressional District
Description = Includes loose description of whether county is in North California (No), the Bay Area (Bay), Central California (C), The Central Coast (CC), the LA Area (LA) or Southern California (So)
2004 = Bush/Kerry result in 2004
Congressman = Includes party of current representative
Demographics = Includes demographic makeup of Hispanics (H), Whites (W), Asians (A) and Blacks (B) whenever one of those groups exceeds 10%.
Predict. = My predicted delegate breakdown.

Districts with 3 delegates.  Delegates will split 2-1 if a candidate wins 50-83.3% of the vote.  A candidate needs greater than 83.3% of the vote to win all three delegates.  I think Hillary has the advantage in each district but probably not sufficient in either one to gain a 3-0 advantage.

CD  Description      2004   Congressman     Demographics        Predict.
20  C-Fresno         K-51   Costa (D)       63%H,21%W           2-1 HRC
47  LA-Anaheim       B-50   Lo. Sanchez (D) 65%H,17%W,14%A      2-1 HRC

Districts with 4 delegates.  Delegates will split 3-1 only if a candidate gets between 62.5% and 85% of the vote.  Less than 62.5% will result in a 2-2 split.  More than 85% will result in a 4-0 split. Hillary is favored almost everywhere here, but will be hardpressed to get greater than 62.5% of the vote to win the majority of delegates.  There's a few districts where that might be possible, notably those with very high Hispanic and Asian populations.

CD  Description       2004   Congressman     Demographics        Predict.
2   No-Redding         B-62   Herger (R)      81%W                2-2
3   No-Alpine/Amador B-58     Lungren (R)     79%W                2-2
11  C-Plsntn/Lodi     B-58   McNerney (D)     64%W,20%H           2-2
16  Bay-San Jose      K-63   Lofgren (D)     38%H,32%W,23%A      2-2
18  C-Stockton        B-50   Cardoza (D)     42%H,39%W           2-2
19  C-Tuolumne/Madera B-61   Radanovich (R)  59%W,28%H           2-2
21  C-Tulare          B-65   Nunes (R)       46%W,43%H           2-2
22  C-SLO Cty/Kern    B-68   McCarthy (R)    67%W,21%H           2-2
25  So-Barstow        B-59   McKeon (R)      57%W,27%H           2-2
26  So-Rancho Cucam.  B-55   Dreier (R)      53%W,24%H,15%A      2-2
31  LA-Downtown LA    K-77   Becerra (D)     70%H,14%A           3-1 HRC
32  LA-East LA        K-62   Solis (D)       62%H,18%A,15%W      3-1 HRC
34  LA-Hunt. Pak      K-69   Royb.-All. (D)  77%H,11%W           2-2
38  LA-Pomona         K-65   Napolitano (D)  71%H,14%W,10%A      3-1 HRC
39  LA-Southgate      K-59   Li. Sanchez (D) 61%H,21%W,10%A      2-2
40  LA-Orange         B-60   Royce (R)       49%W,30%H,15%A      2-2
41  So-San Bern. Cty  B-62   Lewis (R)       64%W,23%H           2-2
42  LA-Mission Viejo  B-62   Miller (R)      54%W,24%H,16%A      2-2
43  So-Ontr./SanBern. K-58   Baca (D)        58%H,23%W,12%B      2-2
44  So-Riverside      B-59   Calvert (R)     51%W,35%H           2-2
45  So-Palm Springs   B-56   Bono (R)        50%W,38%H           2-2
46  So-Huntngtn. Bch. B-57   Rohrabacher (R) 63%W,17%H,15%A      2-2
48  So-Newport Beach  B-58   Campbell (R)    68%W,15%H,13%A      2-2
49  So-Oceanside      B-63   Issa (R)        58%W,30%H           2-2
51  So-Imperial Cty.  K-53   Filner (D)      53%H,21%W,12%A      3-1 HRC
52  So-East SD Cty.   B-61   Hunter (R)      73%W,14%H           2-2

Districts with 5 delegates.  Delegates will split 3-2 if a candidate wins between 50 and 70% of the vote.  Delegates will split 4-1 if a candidate wins between 70 and 85 of the vote.  Delegates will go 5-0 if a candidate wins greater than 85% of the vote.  Hillary will win the lion's share of these as well, but Obama will likely pick of a few as well.  I don't see any of these districts being a sufficient enough of a landslide to go to one candidate 4-1 or 5-0.

CD  Description       2004   Congressman     Demographics        Predict.
1   No-Mend/Hum Cty   K-60   Thompson (D)    79%W,18%H           3-2 BO
4   No-Lake Tahoe     B-61   Doolittle (R)   89%W                3-2 HRC
5   C-Sacramento      K-61   Matsui (D)      61%W,21%H,15%A,15%B 3-2 HRC
7   Bay-Vacaville     K-67   Miller (D)      43%W,21%H,17%B,13%A 3-2 BO
10  Bay-Walnut Creek  K-58   Tauscher (D)    65%W,15%H           3-2 HRC
13  Bay-Fremont       K-71   Stark (D)       38%W,28%A,21%H      3-2 HRC
15  Bay-Milpitas      K-63   Honda (D)       47%W,29%A,17%H      3-2 HRC
17  CC-Monterey Bay   K-66   Farr (D)        46%W,43%H           3-2 HRC
23  CC-SLO/SBarb/Vent K-58   Capps (D)       49%W,42%H           3-2 HRC
24  So-Thous. Oaks    B-56   Gallegly (R)    68%W,22%H           3-2 HRC
27  LA-San Fern Vall. K-59   Sherman (D)     45%W,37%H,11%A      3-2 HRC
28  LA-Van Nuys       K-71   Berman (D)      56%H,31%W           3-2 HRC
29  LA-Pasadena       K-61   Schiff (D)      39%W,26%H,24%A      3-2 HRC
33  LA-Culver City    K-83   Watson (D)      35%H,30%B,20%W,12%A 3-2 BO
35  LA-Inglewood      K-79   Waters (D)      47%H,34%B,10%W      3-2 BO
36  LA-Torrance       K-59   Harman (D)      48%W,30%H,13%A      3-2 HRC
37  LA-Long Beach     K-74   Richardson (D)  43%H,25%B,17%W,11%A 3-2 HRC
50  So-Carlsbad       B-55   Bilbray (R)     66%W,19%H,10%A      3-2 HRC
53  So-San Diego      K-61   Davis (D)       51%W,29%H           3-2 HRC

Districts with 6 delegates.  District will split 4-2 if a candidate wins between 58.3% and 75% of the vote; it will split 3-3 if it is less than 58.3%; it will split 5-1 if a candidate wins between 75% and 85% and 6-0 if it is greater than 85%.  Obama has a good chance of winning a few of thse by a sufficient margin to take a delegate advantage.  I don't know if Hillary has any hope here.

CD  Description       2004   Congressman     Demographics        Predict.
6   Bay-Marin/Sonoma  K-70   Woolsey (D)     76%W,15%H           4-2 BO
8   Bay-San Francisco K-84   Pelosi (D)      43%W,29%A,15%H      3-3
9   Bay-Oakland       K-86   Lee (D)         35%W,26%B,18%H,15%A 4-2 BO
12  Bay-San Mateo Cty K-72   Lantos (D)      48%W,29%A,16%H      3-3
14  Bay-Palo Alto     K-68   Eshoo (D)       60%W,18%H,16%A      3-3
30  LA-Malibu         K-66   Waxman (D)      76%W                4-2 BO

So in summary, the congressional-district delegate breakdown should favor Hillary, but not overwhelmingly; about +15 for the 241 delegates at stake.  She'll also win a majority of the statewide at-large delegates to go about +25 or +30 for the state as a whole.

*UPDATE* - Statewide apportionment

At-large statewide delegates are awarded proportionally in two pots. One pot has 48 delegates, one has 81 delegates. Here's how it would break down:

Winner's Delegate
Vote Pct Apportionment
up to 51.0 65-64
51.1-51.2 66-63
51.3-52.4 67-62
52.4-53.1 68-61
53.1-53.7 69-60
53.8-54.9 70-59
55.0-55.2 71-58
55.3-56.1 72-57
56.2-57.2 73-56
57.3-57.4 74-55
57.5-58.6 75-54