| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 1,063,275 | 9,084 | 174,735 | 2,679 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| California | 110,545 | 2,793 | 14,225 | 748 |
| Florida | 69,410 | 2,412 | 11,905 | 835 |
| Texas | 69,140 | 2,340 | 11,205 | 758 |
| New York | 65,165 | 2,027 | 10,760 | 696 |
| Ohio | 54,195 | 2,271 | 14,195 | 1,087 |
| Pennsylvania | 51,345 | 1,476 | 10,275 | 738 |
| Illinois | 45,780 | 1,929 | 7,550 | 659 |
| Michigan | 39,505 | 1,674 | 6,780 | 523 |
| Wisconsin | 36,400 | 1,200 | 6,940 | 456 |
| Indiana | 35,400 | 1,838 | 8,100 | 953 |
| Washington | 32,475 | 1,502 | 4,305 | 506 |
| Virginia | 31,145 | 1,601 | 4,210 | 507 |
| New Jersey | 27,405 | 1,356 | 4,260 | 509 |
| Georgia | 25,960 | 1,526 | 3,365 | 426 |
| Colorado | 25,645 | 1,307 | 3,045 | 342 |
| Minnesota | 24,275 | 921 | 4,165 | 353 |
| North Carolina | 23,515 | 1,235 | 2,895 | 296 |
| Arizona | 23,020 | 1,441 | 2,830 | 486 |
| Missouri | 22,910 | 1,409 | 5,565 | 929 |
| Maryland | 18,285 | 1,113 | 2,725 | 462 |
| Massachusetts | 17,515 | 1,127 | 1,840 | 292 |
| Oregon | 15,170 | 1,066 | 1,740 | 256 |
| Tennessee | 13,920 | 1,154 | 1,870 | 331 |
| Kansas | 13,095 | 748 | 1,950 | 290 |
| Kentucky | 13,015 | 1,379 | 3,050 | 645 |
| South Carolina | 12,660 | 894 | 1,835 | 289 |
| Iowa | 12,465 | 926 | 2,615 | 390 |
| Connecticut | 11,535 | 807 | 1,450 | 256 |
| Oklahoma | 10,490 | 851 | 1,605 | 325 |
| Alabama | 10,040 | 816 | 1,525 | 275 |
| Utah | 9,025 | 647 | 1,210 | 251 |
| North Dakota | 8,540 | 586 | 1,610 | 204 |
| Nevada | 7,945 | 701 | 1,125 | 232 |
| South Dakota | 7,690 | 601 | 1,355 | 275 |
| New Mexico | 7,580 | 731 | 1,525 | 280 |
| Montana | 7,120 | 621 | 1,265 | 280 |
| Nebraska | 5,690 | 457 | 765 | 140 |
| Arkansas | 5,475 | 609 | 820 | 202 |
| Louisiana | 5,395 | 519 | 720 | 179 |
| Hawaii | 4,615 | 724 | 825 | 350 |
| Idaho | 4,485 | 546 | 670 | 187 |
| New Hampshire | 3,920 | 502 | 345 | 101 |
| Alaska | 3,660 | 592 | 335 | 129 |
| Maine | 3,415 | 368 | 385 | 118 |
| Delaware | 3,190 | 430 | 570 | 181 |
| Mississippi | 3,145 | 403 | 690 | 203 |
| West Virginia | 2,890 | 391 | 650 | 197 |
| District of Columbia | 2,625 | 380 | 295 | 101 |
| Vermont | 2,180 | 344 | 305 | 89 |
| Wyoming | 1,635 | 276 | 225 | 92 |
| Rhode Island | 1,620 | 283 | 260 | 86 |
| Puerto Rico | 390 | 149 | 125 | 88 |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Los Angeles County [CA] | 23,830 | 1,315 | 3,065 | 351 |
| Cook County [IL] | 17,305 | 1,149 | 3,155 | 389 |
| Maricopa County [AZ] | 12,970 | 1,251 | 1,615 | 386 |
| San Diego County [CA] | 10,935 | 823 | 1,430 | 252 |
| New York County [NY] | 10,885 | 1,225 | 1,250 | 396 |
| King County [WA] | 10,685 | 845 | 870 | 192 |
| Harris County [TX] | 8,915 | 1,071 | 1,000 | 288 |
| Orange County [CA] | 8,635 | 708 | 1,065 | 229 |
| Oakland County [MI] | 6,855 | 641 | 1,045 | 221 |
| Santa Clara County [CA] | 6,515 | 658 | 940 | 229 |
| Pierce County [WA] | 6,240 | 608 | 1,550 | 322 |
| Bexar County [TX] | 6,150 | 750 | 795 | 196 |
| Queens County [NY] | 6,015 | 603 | 1,255 | 250 |
| Middlesex County [MA] | 5,980 | 648 | 580 | 142 |
| El Paso County [CO] | 5,790 | 630 | 770 | 230 |
| Clark County [NV] | 5,405 | 561 | 805 | 215 |
| Lancaster County [PA] | 5,355 | 707 | 1,435 | 386 |
| Fairfax County [VA] | 5,350 | 593 | 635 | 201 |
| Riverside County [CA] | 5,330 | 529 | 840 | 190 |
| Broward County [FL] | 5,270 | 500 | 905 | 239 |
| Suffolk County [NY] | 5,215 | 461 | 855 | 235 |
| Montgomery County [MD] | 5,205 | 618 | 810 | 219 |
| Cuyahoga County [OH] | 5,125 | 522 | 1,285 | 204 |
| Palm Beach County [FL] | 5,045 | 645 | 985 | 238 |
| Westchester County [NY] | 4,980 | 694 | 510 | 129 |
| Lee County [FL] | 4,950 | 681 | 1,050 | 265 |
| Alameda County [CA] | 4,910 | 575 | 500 | 164 |
| Pinellas County [FL] | 4,800 | 734 | 715 | 181 |
| San Francisco County [CA] | 4,630 | 528 | 390 | 143 |
| Miami-Dade County [FL] | 4,530 | 683 | 745 | 256 |
| Allegheny County [PA] | 4,525 | 431 | 680 | 130 |
| Hennepin County [MN] | 4,500 | 571 | 680 | 182 |
| Fairfield County [CT] | 4,275 | 502 | 550 | 132 |
| Milwaukee County [WI] | 4,260 | 446 | 750 | 175 |
| San Bernardino County [CA] | 4,245 | 750 | 470 | 191 |
| Sacramento County [CA] | 4,215 | 485 | 570 | 194 |
| Pima County [AZ] | 4,205 | 516 | 395 | 148 |
| Hillsborough County [FL] | 4,150 | 561 | 540 | 147 |
| DuPage County [IL] | 4,000 | 441 | 505 | 157 |
| Macomb County [MI] | 3,950 | 577 | 675 | 153 |
| Dallas County [TX] | 3,920 | 432 | 480 | 127 |
| Contra Costa County [CA] | 3,875 | 529 | 530 | 132 |
| San Mateo County [CA] | 3,820 | 445 | 430 | 154 |
| Nassau County [NY] | 3,770 | 431 | 505 | 130 |
| Hamilton County [OH] | 3,760 | 538 | 615 | 180 |
| Orange County [FL] | 3,655 | 609 | 715 | 290 |
| Kings County [NY] | 3,605 | 371 | 405 | 139 |
| Salt Lake County [UT] | 3,510 | 466 | 440 | 116 |
| St. Louis County [MO] | 3,460 | 496 | 680 | 221 |
| Tarrant County [TX] | 3,430 | 503 | 495 | 181 |
| Wayne County [MI] | 3,345 | 449 | 575 | 160 |
| Multnomah County [OR] | 3,325 | 477 | 370 | 128 |
| Bergen County [NJ] | 3,155 | 400 | 370 | 102 |
| Monroe County [NY] | 3,150 | 409 | 495 | 160 |
| Lake County [IL] | 3,120 | 406 | 520 | 144 |
| Fulton County [GA] | 3,110 | 456 | 530 | 190 |
| Mecklenburg County [NC] | 3,110 | 536 | 305 | 116 |
| Honolulu County [HI] | 3,065 | 617 | 690 | 356 |
| Travis County [TX] | 3,050 | 363 | 350 | 87 |
| Ventura County [CA] | 3,045 | 464 | 475 | 188 |
| Washington County [OR] | 2,985 | 520 | 305 | 155 |
| Philadelphia County [PA] | 2,945 | 373 | 500 | 167 |
| Morris County [NJ] | 2,890 | 486 | 475 | 135 |
| Bucks County [PA] | 2,790 | 320 | 450 | 133 |
| Montgomery County [PA] | 2,730 | 323 | 435 | 126 |
| Erie County [NY] | 2,705 | 348 | 540 | 164 |
| Snohomish County [WA] | 2,690 | 399 | 170 | 74 |
| District of Columbia [DC] | 2,625 | 380 | 295 | 101 |
| Franklin County [OH] | 2,565 | 308 | 365 | 103 |
| Arapahoe County [CO] | 2,470 | 398 | 270 | 97 |
| Collier County [FL] | 2,450 | 422 | 450 | 166 |
| Wake County [NC] | 2,450 | 436 | 255 | 93 |
| Chester County [PA] | 2,450 | 382 | 345 | 106 |
| Dane County [WI] | 2,400 | 354 | 405 | 115 |
| Cobb County [GA] | 2,385 | 371 | 195 | 87 |
| Duval County [FL] | 2,380 | 427 | 420 | 211 |
| Collin County [TX] | 2,230 | 406 | 360 | 132 |
| Denton County [TX] | 2,190 | 413 | 280 | 141 |
| Ocean County [NJ] | 2,185 | 311 | 440 | 134 |
| Burlington County [NJ] | 2,180 | 345 | 470 | 131 |
| Marion County [IN] | 2,140 | 411 | 190 | 83 |
| Suffolk County [MA] | 2,130 | 319 | 305 | 152 |
| Santa Barbara County [CA] | 2,125 | 289 | 420 | 193 |
| Bernalillo County [NM] | 2,120 | 359 | 200 | 64 |
| Loudoun County [VA] | 2,110 | 375 | 330 | 155 |
| Baltimore County [MD] | 2,090 | 334 | 175 | 72 |
| Essex County [MA] | 2,080 | 375 | 200 | 85 |
| Denver County [CO] | 2,070 | 387 | 170 | 75 |
| Sonoma County [CA] | 2,035 | 323 | 220 | 95 |
| Hartford County [CT] | 2,025 | 367 | 255 | 82 |
| New Haven County [CT] | 2,020 | 407 | 195 | 95 |
| Washtenaw County [MI] | 1,995 | 400 | 235 | 107 |
| Anne Arundel County [MD] | 1,990 | 321 | 220 | 101 |
| Ramsey County [MN] | 1,980 | 314 | 275 | 89 |
| Johnson County [KS] | 1,955 | 345 | 320 | 123 |
| Clark County [WA] | 1,945 | 329 | 215 | 87 |
| Monmouth County [NJ] | 1,920 | 363 | 315 | 108 |
| Virginia Beach city [VA] | 1,880 | 343 | 325 | 143 |
| Oklahoma County [OK] | 1,830 | 349 | 335 | 183 |
| DeKalb County [GA] | 1,810 | 340 | 245 | 91 |
| Norfolk County [MA] | 1,795 | 321 | 155 | 68 |
| Gwinnett County [GA] | 1,790 | 334 | 115 | 84 |
| Fresno County [CA] | 1,765 | 270 | 395 | 131 |
| Kane County [IL] | 1,755 | 306 | 340 | 138 |
| Anchorage Municipality [AK] | 1,745 | 353 | 225 | 120 |
| Middlesex County [NJ] | 1,725 | 297 | 230 | 91 |
| New Castle County [DE] | 1,720 | 259 | 205 | 77 |
| Worcester County [MA] | 1,655 | 313 | 150 | 69 |
| Somerset County [NJ] | 1,640 | 307 | 235 | 97 |
| Jefferson County [KY] | 1,635 | 304 | 345 | 160 |
| Will County [IL] | 1,620 | 287 | 205 | 89 |
| Monterey County [CA] | 1,560 | 350 | 185 | 82 |
| Prince William County [VA] | 1,530 | 367 | 170 | 88 |
| Union County [NJ] | 1,525 | 309 | 335 | 162 |
| Washoe County [NV] | 1,470 | 264 | 165 | 63 |
| Solano County [CA] | 1,445 | 289 | 205 | 100 |
| Mercer County [NJ] | 1,440 | 324 | 110 | 61 |
| Delaware County [PA] | 1,380 | 253 | 240 | 82 |
| Placer County [CA] | 1,335 | 270 | 215 | 101 |
| Davidson County [TN] | 1,320 | 262 | 180 | 87 |
| Shelby County [TN] | 1,280 | 283 | 95 | 59 |
| Prince George s County [MD] | 1,255 | 275 | 225 | 92 |
| Stanislaus County [CA] | 1,230 | 303 | 180 | 128 |
| San Joaquin County [CA] | 1,200 | 273 | 155 | 71 |
| Bronx County [NY] | 1,165 | 251 | 475 | 162 |
| Rockland County [NY] | 1,165 | 274 | 250 | 122 |
| Hillsborough County [NH] | 1,160 | 224 | 145 | 77 |
| Onondaga County [NY] | 1,160 | 198 | 250 | 101 |
| Essex County [NJ] | 1,145 | 252 | 135 | 69 |
| Passaic County [NJ] | 1,130 | 256 | 200 | 96 |
| Dakota County [MN] | 1,115 | 203 | 155 | 53 |
| Arlington County [VA] | 1,105 | 258 | 120 | 79 |
| Kern County [CA] | 1,100 | 238 | 130 | 58 |
| Camden County [NJ] | 1,075 | 219 | 210 | 133 |
| Guilford County [NC] | 1,065 | 260 | 120 | 78 |
| Polk County [IA] | 1,005 | 336 | 220 | 126 |
| Orange County [NY] | 970 | 232 | 230 | 127 |
| Baltimore city [MD] | 960 | 228 | 95 | 67 |
| Plymouth County [MA] | 945 | 218 | 120 | 91 |
| Howard County [MD] | 940 | 248 | 215 | 97 |
| Hudson County [NJ] | 800 | 171 | 70 | 50 |
| Atlantic County [NJ] | 755 | 207 | 115 | 81 |
| Providence County [RI] | 755 | 184 | 60 | 43 |
| Albany County [NY] | 725 | 152 | 130 | 64 |
| Hawaii County [HI] | 720 | 270 | 60 | 43 |
| Hampden County [MA] | 720 | 203 | 40 | 35 |
| Yolo County [CA] | 685 | 199 | 65 | 48 |
| Fort Bend County [TX] | 660 | 300 | 130 | 104 |
| Henrico County [VA] | 550 | 177 | 75 | 64 |
| Richmond County [NY] | 505 | 143 | 45 | 31 |
| Maui County [HI] | 490 | 178 | 70 | 56 |
| Jefferson Parish [LA] | 460 | 134 | 35 | 30 |
| Bristol County [MA] | 445 | 132 | 30 | 24 |
| San Juan County [NM] | 230 | 128 | 80 | 73 |
| Navajo County [AZ] | 85 | 60 | (B) | - |
| City / Metropolitan area / CBSA | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| New York-Newark-Jersey City [NY] | 60,090 | 1,908 | 9,240 | 632 |
| Chicago-Naperville-Elgin [IL-IN] | 33,075 | 1,548 | 5,640 | 516 |
| Los Angeles-Long Beach-Anaheim [CA] | 32,465 | 1,460 | 4,135 | 439 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 23,960 | 1,388 | 3,210 | 380 |
| Seattle-Tacoma-Bellevue [WA] | 19,615 | 1,113 | 2,585 | 409 |
| San Francisco-Oakland-Hayward [CA] | 19,610 | 1,183 | 2,020 | 315 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 18,540 | 919 | 3,020 | 372 |
| Detroit-Warren-Dearborn [MI] | 15,425 | 1,042 | 2,560 | 315 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 14,840 | 988 | 2,630 | 435 |
| Atlanta-Sandy Springs-Roswell [GA] | 14,735 | 1,022 | 1,695 | 294 |
| Phoenix-Mesa-Scottsdale [AZ] | 14,335 | 1,359 | 1,720 | 395 |
| Boston-Cambridge-Newton [MA-NH] | 14,090 | 1,001 | 1,455 | 255 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 13,755 | 798 | 2,020 | 260 |
| Dallas-Fort Worth-Arlington [TX] | 13,410 | 935 | 1,800 | 247 |
| Houston-The Woodlands-Sugar Land [TX] | 12,795 | 1,176 | 1,455 | 298 |
| Tampa-St. Petersburg-Clearwater [FL] | 12,105 | 1,089 | 1,905 | 305 |
| Cleveland-Elyria [OH] | 11,350 | 787 | 3,335 | 459 |
| Denver-Aurora-Lakewood [CO] | 11,115 | 864 | 1,265 | 206 |
| San Diego-Carlsbad [CA] | 10,935 | 823 | 1,430 | 252 |
| Portland-Vancouver-Hillsboro [OR-WA] | 10,155 | 861 | 1,140 | 222 |
| Riverside-San Bernardino-Ontario [CA] | 9,570 | 990 | 1,310 | 270 |
| St. Louis [MO-IL] | 9,325 | 847 | 1,445 | 326 |
| San Antonio-New Braunfels [TX] | 9,240 | 983 | 1,335 | 267 |
| Milwaukee-Waukesha-West Allis [WI] | 9,205 | 619 | 1,700 | 254 |
| Pittsburgh [PA] | 7,990 | 604 | 1,205 | 163 |
| Baltimore-Columbia-Towson [MD] | 7,915 | 627 | 1,005 | 204 |
| Cincinnati [OH-KY-IN] | 7,755 | 762 | 1,345 | 287 |
| Sacramento-Roseville-Arden-Arcade [CA] | 7,115 | 723 | 990 | 268 |
| Orlando-Kissimmee-Sanford [FL] | 6,650 | 813 | 1,155 | 347 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 6,645 | 486 | 925 | 220 |
| San Jose-Sunnyvale-Santa Clara [CA] | 6,620 | 648 | 940 | 229 |
| Charlotte-Concord-Gastonia [NC-SC] | 6,185 | 702 | 755 | 172 |
| Colorado Springs [CO] | 5,970 | 646 | 795 | 232 |
| Austin-Round Rock [TX] | 5,795 | 543 | 700 | 143 |
| Las Vegas-Henderson-Paradise [NV] | 5,405 | 561 | 805 | 215 |
| Lancaster [PA] | 5,355 | 707 | 1,435 | 386 |
| Columbus [OH] | 5,140 | 529 | 1,070 | 350 |
| New York-Newark-Jersey City [NY-NJ-PA] | 5,000 | 514 | 875 | 201 |
| Kansas City [MO-KS] | 4,960 | 541 | 665 | 175 |
| Cape Coral-Fort Myers [FL] | 4,950 | 681 | 1,050 | 265 |
| Indianapolis-Carmel-Anderson [IN] | 4,935 | 688 | 485 | 151 |
| Rochester [NY] | 4,730 | 633 | 805 | 201 |
| Bridgeport-Stamford-Norwalk [CT] | 4,275 | 502 | 550 | 132 |
| Tucson [AZ] | 4,205 | 516 | 395 | 148 |
| Jacksonville [FL] | 4,120 | 581 | 780 | 262 |
| Allentown-Bethlehem-Easton [PA-NJ] | 4,095 | 560 | 805 | 235 |
| Richmond [VA] | 3,865 | 511 | 615 | 168 |
| Salt Lake City [UT] | 3,695 | 460 | 485 | 126 |
| Hartford-West Hartford-East Hartford [CT] | 3,425 | 461 | 395 | 133 |
| Madison [WI] | 3,425 | 375 | 560 | 126 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 3,195 | 331 | 610 | 160 |
| Oklahoma City [OK] | 3,185 | 508 | 395 | 192 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 3,135 | 384 | 385 | 133 |
| Urban Honolulu [HI] | 3,065 | 617 | 690 | 356 |
| Oxnard-Thousand Oaks-Ventura [CA] | 3,045 | 464 | 475 | 188 |
| Dayton [OH] | 2,855 | 449 | 410 | 105 |
| Albuquerque [NM] | 2,840 | 454 | 370 | 106 |
| Raleigh [NC] | 2,785 | 452 | 255 | 93 |
| Louisville Jefferson County [KY] | 2,715 | 438 | 535 | 210 |
| Harrisburg-Carlisle [PA] | 2,695 | 323 | 495 | 155 |
| Albany-Schenectady-Troy [NY] | 2,595 | 361 | 455 | 146 |
| Grand Rapids-Wyoming [MI] | 2,460 | 347 | 410 | 147 |
| Naples-Immokalee-Marco Island [FL] | 2,450 | 422 | 450 | 166 |
| Deltona-Daytona Beach-Ormond Beach [FL] | 2,445 | 436 | 505 | 201 |
| Akron [OH] | 2,435 | 365 | 360 | 130 |
| Omaha-Council Bluffs [NE-IA] | 2,165 | 334 | 320 | 97 |
| Anchorage [AK] | 2,140 | 374 | 255 | 122 |
| Santa Maria-Santa Barbara [CA] | 2,125 | 289 | 420 | 193 |
| Providence-Warwick [RI-MA] | 2,065 | 318 | 290 | 90 |
| Santa Rosa [CA] | 2,035 | 323 | 220 | 95 |
| New Haven-Milford [CT] | 2,020 | 407 | 195 | 95 |
| Ann Arbor [MI] | 1,995 | 400 | 235 | 107 |
| Worcester [MA-CT] | 1,925 | 347 | 165 | 71 |
| Syracuse [NY] | 1,890 | 234 | 335 | 112 |
| Tulsa [OK] | 1,865 | 246 | 350 | 116 |
| Spokane-Spokane Valley [WA] | 1,845 | 336 | 225 | 105 |
| Durham-Chapel Hill [NC] | 1,825 | 344 | 150 | 80 |
| Fresno [CA] | 1,765 | 270 | 395 | 131 |
| Memphis [TN-MS-AR] | 1,725 | 347 | 125 | 67 |
| Lansing-East Lansing [MI] | 1,580 | 234 | 240 | 77 |
| Salinas [CA] | 1,560 | 350 | 185 | 82 |
| New Orleans-Metairie [LA] | 1,500 | 214 | 200 | 79 |
| Greensboro-High Point [NC] | 1,475 | 328 | 180 | 104 |
| Reno [NV] | 1,470 | 264 | 165 | 63 |
| Vallejo-Fairfield [CA] | 1,445 | 289 | 205 | 100 |
| Trenton [NJ] | 1,440 | 324 | 110 | 61 |
| Des Moines-West Des Moines [IA] | 1,395 | 375 | 325 | 147 |
| Modesto [CA] | 1,230 | 303 | 180 | 128 |
| Portland-South Portland [ME] | 1,205 | 228 | 160 | 71 |
| Stockton-Lodi [CA] | 1,200 | 273 | 155 | 71 |
| Manchester-Nashua [NH] | 1,160 | 224 | 145 | 77 |
| Springfield [MA] | 1,115 | 240 | 90 | 63 |
| Bakersfield [CA] | 1,100 | 238 | 130 | 58 |
| Baton Rouge [LA] | 910 | 210 | 70 | 46 |
| Atlantic City-Hammonton [NJ] | 755 | 207 | 115 | 81 |
| Hilo [HI] | 720 | 270 | 60 | 43 |
| Lafayette [LA] | 615 | 227 | (D) | (D) |
| Kahului-Wailuku-Lahaina [HI] | 490 | 178 | 70 | 56 |
| Farmington [NM] | 230 | 128 | 80 | 73 |
| Show Low [AZ] | 85 | 60 | (B) | - |