With the Census Bureau having completed its gradual rollout of data from all the states last week, I've finally gotten around to assembling data from all the various congressional districts into one place. While the actual population gain or loss in each district isn't as important a number, for SSP purposes, as the number of people each district will need to shed or gain as part of the redistricting process (which you can see in the various posts we did as each state's data came out), the overall gain and loss is an important part in the overall picture of where people are moving to and from (and where they're being born). Just the numbers of people moving in or out isn't as helpful as knowing who exactly these people are, and we'll delve a little more deeply into the changing racial compositions of the CDs in the next day or two... but for now, here are the overall population change numbers.
You're probably noticing, "Wow, that's a lot of Republican districts." That's certainly true, but these are also districts that (as we'll see when we talk about changing racial composition), for the most part, aren't becoming more Republican; people tend to bring their values with them rather than undergoing some magical David Brooksian conversion experience once they move in from the city, the inner-ring suburbs, or another country. Some of these districts are ones where much of the gains are Hispanic (like NV-03 or TX-10, or just about any California district on the list); in the case of GA-07, it's becoming more African-American. That isn't to say that these are all on the verge of becoming blue, of course; with much of these districts' non-white populations under 18, it'll be a gradual process. And redistricting is likely to de-diversify at least some of these districts, with some of the closer-in suburban portions of these districts (note that many of these districts are the ones right on the cusp of suburb and exurb) to be given to lower-population urban districts that need to expand outward, with the remaining parts of the districts staying red. (GA-07, again, is a case in point; the innermost parts of Gwinnett County, which are pretty diverse today, probably will need to get added on to underpopulated GA-05, leaving the rest of the district in very Republican-friendly condition.)
You may recall I did this same thing a year and a half ago when the 2008 estimates came out; there's been very little change to the list since then, although with some swapping of places. Despite its position at the absolute epicenter of the housing bubble, NV-03 moved up from 4th to 1st place, past the two Arizona districts and TX-10. Districts that fell out of the top 25 in 2008 include GA-06, TX-03, CO-06, FL-25, IL-14, and FL-06, replaced by VA-10, FL-12, TX-28, TX-23, TX-04, and ID-01.
District
Rep.
2000
2010
Change
NV-03
Heck (R)
665,345
1,043,855
378,510
AZ-02
Franks (R)
641,435
972,839
331,404
AZ-06
Flake (R)
641,360
971,733
330,373
TX-10
McCaul (R)
651,523
981,367
329,844
FL-05
Nugent (R)
639,719
929,533
289,814
CA-45
Bono Mack (R)
638,553
914,209
275,656
GA-07
Woodall (R)
630,511
903,191
272,680
TX-26
Burgess (R)
651,858
915,137
263,279
TX-22
Olson (R)
651,657
910,877
259,220
TX-31
Carter (R)
651,868
902,101
250,233
NC-09
Myrick (R)
619,705
852,377
232,672
VA-10
Wolf (R)
643,714
869,437
225,723
UT-03
Chaffetz (R)
744,545
966,232
221,687
FL-14
Mack (R)
639,298
858,956
219,658
AZ-07
Grijalva (D)
640,996
855,769
214,773
NC-04
Price (D)
619,432
826,878
207,446
CA-44
Calvert (R)
639,008
844,756
205,748
CA-25
McKeon (R)
638,768
844,320
205,552
TX-21
Smith (R)
651,930
856,954
205,024
FL-12
Ross (R)
640,096
842,199
202,103
TX-28
Cuellar (D)
651,259
851,824
200,565
TX-23
Canseco (R)
651,149
847,651
196,502
TX-04
Hall (R)
651,500
846,142
194,642
GA-09
Graves (R)
629,678
823,583
193,905
ID-01
Labrador (R)
648,922
841,930
193,008
And here are the biggest losers, looking every bit as heavily Democratic as the list of gainers is Republican. However, if you go through the list line by line, you'll notice that very few of these districts are even remotely-considered as being on the chopping block. That's partly because many of these are VRA seats, or otherwise set up by Republican legislatures as Democratic vote sinks (PA-14, for example). The most obvious exceptions up for elimination are PA-12, which almost everyone concedes is gone with the wind, OH-10, which is set to get mashed with OH-13, and possibly IL-17, ironically one of the few GOP-held seats on the list (although it might instead wind up getting turned into a significantly bluer district by the now-Dem-controlled Illinois legislature). Instead, as I mentioned earlier, many of these districts are going to wind up reaching out further into the suburbs... in many cases, expanding to follow the same constituents who just moved out of the city (for instance, all the Detroit residents who moved across 8 Mile into MI-12).
Now, let's switch over to counties. Counties are a unit of analysis that don't get talked about at SSP as much as congressional districts, despite the fact that they're more useful for talking about historical trends because their boundaries (almost) never change over the decades; the rationale, I suppose, is that much of the nation's population lives in huge counties that contain multiple (or in the case of Los Angeles County, more than a dozen) CDs, so in many cases it's not as granular a sort (and conversely, counties turn into too-granular a sort if you're interested in, say, Kansas or west Texas).
Still, looking at which counties gained the most population in raw numbers, it provides an interesting counterpoint to the biggest-gaining CDs. While you'd get the impression of impending utter Republican dominance by looking at the party IDs of which CDs have excess population to shed, looking at the nation's largest counties shows that, when you balance out the parts and pieces that make up the various CDs, many of the counties have very swingy results at the presidential level. I was also planning to look at changes in racial composition by county as well as by CD in the coming days, so it'll also become quite evident (if you hadn't already mentally extrapolated from which CDs are in which counties) that much of the growth coming in these fastest-growing counties is coming from non-whites.
County
08 Results
2000
2010
Change
Maricopa, AZ
44/54
3,072,149
3,817,117
744,968
Harris, TX
50/49
3,400,578
4,092,459
691,881
Riverside, CA
50/48
1,541,387
2,189,641
644,254
Clark, NV
58/39
1,375,765
1,951,269
575,504
Tarrant, TX
44/55
1,466,219
1,809,034
362,815
San Bernardino, CA
52/46
1,709,434
2,035,210
325,776
Bexar, TX
52/47
1,392,931
1,714,773
321,842
Los Angeles, CA
69/29
9,519,338
9,818,605
299,267
Collin, TX
37/62
491,675
782,341
290,666
San Diego, CA
54/44
2,813,833
3,095,313
281,480
Wake, NC
57/42
627,846
900,993
273,147
Orange, FL
59/40
896,344
1,145,956
249,612
Miami-Dade, FL
58/42
2,253,362
2,496,435
243,073
Fort Bend, TX
48/51
354,452
585,375
230,923
Hillsborough, FL
53/46
998,948
1,229,226
230,278
Denton, TX
37/62
432,976
662,614
229,638
Mecklenburg, NC
62/37
695,454
919,628
224,174
Gwinnett, GA
44/55
588,448
805,321
216,873
Travis, TX
64/34
812,280
1,024,266
211,986
Hidalgo, TX
69/30
569,463
774,769
205,306
Pinal, AZ
42/56
179,727
375,770
196,043
Sacramento, CA
58/39
1,223,499
1,418,788
195,289
King, WA
70/28
1,737,034
1,931,249
194,215
Palm Beach, FL
61/38
1,131,184
1,320,134
188,950
Kern, CA
40/58
661,645
839,631
177,986
The counties with the biggest numeric loss, on the other hand, are almost all Democratic ones with a few exceptions from the New Orleans suburbs. Some are Dem strongholds that are just intensifying (like Cook County, home of Chicago, whose blueness we kind of take for granted these days... Mike Dukakis won it only 56-43). Others are onetime solid Dem counties that have turned swingy as older ex-unionists die off and educated young voters book their tickets elsewhere (like the western Pennsylvania and West Virginia counties).
County
08 Results
2000
2010
Change
Wayne, MI
74/25
2,061,162
1,820,584
- 240,578
Cook, IL
76/23
5,376,741
5,194,675
- 182,066
Orleans, LA
79/19
484,674
343,829
- 140,845
Cuyahoga, OH
69/30
1,393,978
1,280,122
- 113,856
Allegheny, PA
57/42
1,281,666
1,223,348
- 58,318
Hamilton, OH
53/46
845,303
802,374
- 42,929
St. Bernard, LA
26/71
67,229
35,897
- 31,332
Erie, NY
58/40
950,265
919,040
- 31,225
Baltimore city, MD
87/12
651,154
620,961
- 30,193
St. Louis city, MO
84/16
348,189
319,294
- 28,895
Montgomery, OH
52/46
559,062
535,153
- 23,909
Jefferson, LA
36/62
455,466
432,552
- 22,914
Mahoning, OH
62/36
257,555
238,823
- 18,732
St. Louis, MO
60/40
1,016,315
998,954
- 17,361
Trumbull, OH
60/37
225,116
210,312
- 14,804
Lucas, OH
65/33
455,054
441,815
- 13,239
Fayette, PA
49/50
148,644
136,606
- 12,038
Washington, MS
67/32
62,977
51,137
- 11,840
Beaver, PA
48/50
181,412
170,539
- 10,873
Genesee, MI
65/33
436,141
425,790
- 10,351
Saginaw, MI
58/40
210,039
200,169
- 9,870
Essex, NJ
76/23
793,633
783,969
- 9,664
Hampton city, VA
69/30
146,437
137,436
- 9,001
Cambria, PA
49/48
152,598
143,679
- 8,919
Kanawha, WV
49/49
200,073
193,063
- 7,010
While looking at congressional districts by percentage of change isn't that interesting (as they all start from a very similar baseline, giving you almost the same results as raw numeric change), it's worth a deeper look with counties, because counties come in a wide variety of sizes and the fastest-gainers by population don't dovetail much with the fastest-gainers by percentage. The percentage gainers tend to smaller counties that are poised at the very edge of metropolitan growth, making the transition from rural to exurban. Case in point: #1 Kendall County, which is where you wind up if you find already-exurban Kane County and then head south, to where Chicagoland meets the prairie. The bigger-name counties on this list, like Loudoun County, Virginia, Douglas County, Colorado, and Collin and Fort Bend Counties, Texas, are some of the archetypal exurbs of decades past, which are starting to diversify and make the stylistic transition from exurb to outer-ring suburb... and their voting patterns are starting to change too, with Loudoun turning light-blue and Douglas and Collin still pretty red but making sharp moves in 2008.
County
08 Results
2000
2010
Change Factor
Kendall, IL
53/46
54,544
114,736
2.10
Pinal, AZ
42/56
179,727
375,770
2.09
Flagler, FL
50/49
49,832
95,696
1.92
Lincoln, SD
42/57
24,131
44,828
1.86
Loudoun, VA
54/45
169,599
312,311
1.84
Rockwall, TX
26/73
43,080
78,337
1.82
Forsyth, GA
20/78
98,407
175,511
1.78
Sumter, FL
36/63
53,345
93,420
1.75
Paulding, GA
30/69
81,678
142,324
1.74
Sublette, WY
21/76
5,920
10,247
1.73
Henry, GA
46/53
119,341
203,922
1.71
Teton, ID
49/49
5,999
10,170
1.70
Williamson, TX
43/55
249,967
422,679
1.69
Fort Bend, TX
48/51
354,452
585,375
1.65
Union, NC
36/63
123,677
201,292
1.63
Douglas, CO
41/58
175,766
285,465
1.62
Dallas, IA
46/52
40,750
66,135
1.62
Newton, GA
50/49
62,001
99,958
1.61
Hays, TX
48/50
97,589
157,107
1.61
Collin, TX
37/62
491,675
782,341
1.59
Franklin, WA
37/61
49,347
78,163
1.58
Delaware, OH
40/59
109,989
174,214
1.58
Forest, PA
42/55
4,946
7,716
1.56
Osceola, FL
59/40
172,493
268,685
1.56
Montgomery, TX
23/76
293,768
455,746
1.55
Finally, here are the biggest losing counties by percentage. Unfortunately, beyond the obvious Orleans Parish (and several other smaller Louisiana parishes obliterated by hurricanes), it's a bunch of counties that you've probably never heard of, most of which are very tiny. Beyond that, it tells us that blindingly-red western Kansas and western North Dakota are losing population, as well as the Texas and Oklahoma Panhandles... and also dark-blue, mostly-black rural counties in the Mississippi Delta, which was seen in MS-02's population loss. The list continues on like that ad nauseam; the next county with a population over 100,000 is all the way down at #148: Wayne County, MI, which is 88% of its 2000 size. St. Louis city and Cuyahoga County, OH follow along at 92%.