Two weeks ago we looked at the racial breakdown of population changes from the years 2000 to 2007 in the states that are projected to gain seats after the 2010 census. In many of the states (Arizona, Florida, Nevada) Hispanic growth far outpaced white growth, and this was especially pronounced in Texas. I vowed to return to this when the 2007 estimate, broken down by congressional district or county, was released; well, it hasn't, but I thought I'd look at the changes from the 2000 census to the 2006 estimate, broken down by county.
The changes are pretty dramatic, and they show that the Hispanic and African-American growth is solidly concentrated in the metropolitan areas (which was something I was concerned about when I last posted on this). For redistricting purposes, it helps us immensely to have this growth concentrated as much as possible, so that even if the Texas GOP controls the redistricting process, they may have no choice but to concede several new majority-minority or 'influence' House districts, instead of being able to disperse and dilute those votes.
In the following tables, I've broken the large counties down by the metro area they're part of. There's also a separate table for 'rest of the state,' which is all of the counties that are left over.
Houston area
County
Total gain
White gain
Af.-Am. gain
Asian gain
Hispanic gain
Brazoria
46,131
10,363
10,027
7,274
17,628
Fort Bend
138,735
31,662
32,575
32,832
37,973
Galveston
33,393
15,056
1,049
2,795
12,485
Harris
485,629
-4,677
95,933
35,369
364,560
Montgomery
104,522
64,104
7,022
3,873
29,027
Dallas area
County
Total gain
White gain
Af.-Am. gain
Asian gain
Hispanic gain
Collin
207,176
99,096
26,944
35,834
42,912
Dallas
126,826
-139,664
33,058
15,357
221,832
Denton
151,262
74,506
15,295
14,986
41,487
Tarrant
225,076
31,307
44,605
18,331
129,308
San Antonio and Austin area
County
Total gain
White gain
Af.-Am. gain
Asian gain
Hispanic gain
Bexar
162,661
9,515
9,725
10,310
132,625
Travis
108,726
20,270
4,161
14,309
70,191
Williamson
103,863
56,529
6,916
6,645
28,123
South Texas
County
Total gain
White gain
Af.-Am. gain
Asian gain
Hispanic gain
Cameron
52,490
-3,825
-363
1,755
50,988
Hidalgo
131,171
2,365
812
2,079
123,642
Nueces
7,812
-7,164
-595
564
14,130
Other major counties
County
Total gain
White gain
Af.-Am. gain
Asian gain
Hispanic gain
Bell
19,973
3,156
6,399
1,683
9,307
El Paso
56,988
-11,704
-634
1,048
67,699
Jefferson
-8,137
-13,138
-1,099
-215
6,011
Lubbock
12,234
554
180
749
10,207
McLennan
13,372
1,195
729
1,476
9,205
Rest of state
Total gain
White gain
Af.-Am. gain
Asian gain
Hispanic gain
872,657
270,799
72,870
26,253
511,393
As you can see, there is a huge concentration of Hispanic growth in Harris County (Houston and its closest suburbs), to the extent that even if Republicans solely control the redistricting process they may have to concede the creation of a new Hispanic-majority district in central and south-west Houston (probably accompanied by pushing the current 7th further out into the western suburbs to maintain its strong Republican lean).
There also looks like the possibility of a Hispanic-majority district in Dallas, particularly if it's a barbell-shaped district that takes in western Dallas and the central part of Fort Worth with a strip of suburbs in between (accompanied by pushing the 24th and 32nd further north into Collin and Denton Counties, fast-growing conservative exurbs to the north of Dallas). If Republicans control redistricting, they might not want to concede this district as well, but the population numbers might pave the way for a Voting Rights Act vote-dilution lawsuit that could force the creation of the district anyway.
Remaining Hispanic growth seems dispersed enough that the remaining two seats (of the four Texas is predicted to gain) are likely to be those long, squiggly Republican-leaning rural seats that the Texas GOP seems to love so much. But even there, the Texas Republicans are going to be fighting a slowly losing battle, building bulwarks against a rising tide.
UPDATE: It was asked in the comments if this data was available broken down by congressional district. As with counties, it isn't broken down by congressional district for 2007, but it is for 2006, so here are the districts in the two major metro areas:
Houston area
District
2000-04 PVI
Total gain
White gain
Af.-Am. gain
Asian gain
Hispanic gain
TX-02 (north suburbs)
R+12
95,936
5,766
36,233
10,339
44,521
TX-07 (west Houston)
R+16
111,479
10,157
34,502
16,457
53,946
TX-08 (Montgomery Co.)
R+20
112,708
71,110
3,618
4,381
32,795
TX-09 (south Houston)
D+21
46,698
-21,186
5,334
-1,836
72,098
TX-10 (west suburbs)
R+13
197,489
58,452
21,843
22,577
91,974
TX-14 (Brazoria, Galveston Cos.)
R+14
80,660
30,099
5,389
6,249
33,776
TX-18 (north Houston)
D+23
35,176
-22,950
-1,530
-16
61,501
TX-22 (Fort Bend Co.)
R+15
156,439
12,262
44,954
35,114
62,637
TX-29 (east Houston)
D+8
38,363
-34,178
-507
3,034
71,678
Dallas area
District
2000-04 PVI
Total gain
White gain
Af.-Am. gain
Asian gain
Hispanic gain
TX-03 (Collin Co.)
R+17
161,646
39,434
32,662
34,758
57,888
TX-04 (Collin Co.)
R+17
129,236
64,729
14,452
8,631
38,159
TX-05 (eastern suburbs)
R+16
62,297
4,304
11,094
3,112
44,988
TX-06 (southern suburbs)
R+15
100,664
4,912
34,321
5,874
56,831
TX-12 (Ft. Worth)
R+14
98,789
44,514
6,271
5,363
43,648
TX-24 (airport area)
R+15
115,310
-15,695
28,387
23,600
79,641
TX-26 (Denton Co.)
R+12
162,261
73,887
8,893
11,041
63,934
TX-30 (south Dallas)
D+26
31,221
-23,647
-7,824
-364
60,496
TX-32 (north Dallas)
R+11
2,734
-45,354
6,716
-1,596
44,824
This puts into pretty stark relief why TX-07, TX-10, and TX-32 are suddenly on everyone's maps: demographically, they're totally different districts than they were four, let alone eight, years ago.