I have never seen the Nielsen DMA rankings broken down by race before. This is pretty interesting stuff! I've only listed the top 20; you can consult the link for the full listings.
TOTAL DMA
Designated Market Area (DMA) | TV Homes | % of US
1 New York 7,461,030 6.442
2 Los Angeles 5,665,780 4.892
3 Chicago 3,534,080 3.052
4 Philadelphia 2,963,500 2.559
5 Dallas-Ft. Worth 2,655,290 2.293
6 San Francisco-Oak-San Jose 2,518,900 2.175
7 Boston (Manchester) 2,433,040 2.101
8 Washington, DC (Hagerstown) 2,412,250 2.083
9 Atlanta 2,375,050 2.051
10 Houston 2,289,360 1.977
11 Detroit 1,856,400 1.603
12 Phoenix (Prescott) 1,855,310 1.602
13 Seattle-Tacoma 1,847,780 1.596
14 Tampa-St. Pete (Sarasota) 1,827,510 1.578
15 Minneapolis-St. Paul 1,748,070 1.509
16 Miami-Ft. Lauderdale 1,663,290 1.436
17 Denver 1,574,610 1.360
18 Orlando-Daytona Bch-Melbourne 1,490,380 1.287
19 Cleveland-Akron (Canton) 1,484,530 1.282
20 Sacramento-Stockton-Modesto 1,387,950 1.198
HISPANIC
Designated Market Area (DMA) | Hispanic TV Homes | % of US
1 Los Angeles 1,967,440 13.397
2 New York 1,425,800 9.708
3 Miami-Ft. Lauderdale 735,740 5.01
4 Houston 651,300 4.435
5 Dallas-Ft. Worth 546,480 3.721
6 Chicago 535,980 3.65
7 San Francisco-Oak-San Jose 441,590 3.007
8 San Antonio 437,740 2.981
9 Phoenix (Prescott) 379,850 2.586
10 Harlingen-Weslaco-Brnsvl-McA 315,690 2.15
11 Sacramento-Stockton-Modesto 286,690 1.952
12 San Diego 267,430 1.821
13 Albuquerque-Santa Fe 263,530 1.794
14 Fresno-Visalia 261,410 1.78
15 Denver 246,160 1.676
16 El Paso (Las Cruces) 243,000 1.655
17 Orlando-Daytona Bch-Melbourne 240,510 1.638
18 Philadelphia 238,130 1.621
19 Washington, DC (Hagerstown) 225,870 1.538
20 Tampa-St. Pete (Sarasota) 219,500 1.495
BLACK / AA
Designated Market Area (DMA) | Black TV Homes | % of US
1 New York 1,315,520 8.853
2 Atlanta 708,290 4.767
3 Chicago 610,210 4.107
4 Washington, DC (Hagerstown) 591,840 3.983
5 Philadelphia 551,720 3.713
6 Los Angeles 483,100 3.251
7 Houston 411,400 2.769
8 Dallas-Ft. Worth 408,010 2.746
9 Detroit 394,790 2.657
10 Miami-Ft. Lauderdale 331,000 2.228
11 Raleigh-Durham (Fayetteville) 323,100 2.174
12 Baltimore 301,570 2.030
13 Memphis 270,120 1.818
14 Charlotte 230,030 1.548
15 Norfolk-Portsmth-Newpt Nws 219,060 1.474
16 Cleveland-Akron (Canton) 218,930 1.473
17 St. Louis 196,030 1.319
18 Orlando-Daytona Bch-Melbourne 193,810 1.304
19 Tampa-St. Pete (Sarasota) 193,800 1.304
20 San Francisco-Oak-San Jose 189,440 1.275
ASIAN
Designated Market Area (DMA) | Asian TV Homes | % of US
1 Los Angeles 758,100 14.510
2 New York 651,750 12.475
3 San Francisco-Oak-San Jose 541,640 10.367
4 Honolulu 219,320 4.198
5 Chicago 195,770 3.747
6 Washington, DC (Hagerstown) 188,810 3.614
7 Seattle-Tacoma 157,370 3.012
8 Houston 141,460 2.708
9 Sacramento-Stockton-Modesto 137,580 2.633
10 Dallas-Ft. Worth 127,870 2.448
11 Philadelphia 127,020 2.431
12 Boston (Manchester) 120,130 2.299
13 San Diego 114,260 2.187
14 Atlanta 93,370 1.787
15 Detroit 63,850 1.222
16 Las Vegas 63,600 1.217
17 Minneapolis-St. Paul 59,210 1.133
18 Phoenix (Prescott) 57,640 1.103
19 Portland, OR 49,750 0.952
20 Baltimore 45,480 0.871
TVB - Nielsen 2013-2014 DMA Ranks