| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 1,063,773 | 9,107 | 174,758 | 2,680 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| California | 110,575 | 2,794 | 14,235 | 750 |
| Florida | 69,475 | 2,416 | 11,906 | 835 |
| Texas | 69,214 | 2,338 | 11,204 | 758 |
| New York | 65,194 | 2,029 | 10,762 | 696 |
| Ohio | 54,215 | 2,277 | 14,196 | 1,087 |
| Pennsylvania | 51,345 | 1,476 | 10,275 | 738 |
| Illinois | 45,782 | 1,929 | 7,550 | 659 |
| Michigan | 39,503 | 1,674 | 6,780 | 523 |
| Wisconsin | 36,443 | 1,205 | 6,941 | 456 |
| Indiana | 35,409 | 1,839 | 8,107 | 955 |
| Washington | 32,474 | 1,502 | 4,304 | 506 |
| Virginia | 31,147 | 1,601 | 4,209 | 507 |
| New Jersey | 27,412 | 1,353 | 4,258 | 509 |
| Georgia | 25,968 | 1,526 | 3,366 | 426 |
| Colorado | 25,675 | 1,307 | 3,047 | 342 |
| Minnesota | 24,277 | 921 | 4,165 | 353 |
| North Carolina | 23,535 | 1,235 | 2,896 | 296 |
| Arizona | 23,063 | 1,449 | 2,831 | 486 |
| Missouri | 22,909 | 1,409 | 5,563 | 929 |
| Maryland | 18,284 | 1,113 | 2,726 | 462 |
| Massachusetts | 17,515 | 1,127 | 1,842 | 292 |
| Oregon | 15,185 | 1,067 | 1,742 | 256 |
| Tennessee | 13,920 | 1,154 | 1,872 | 331 |
| Kansas | 13,095 | 748 | 1,949 | 290 |
| Kentucky | 13,016 | 1,379 | 3,048 | 645 |
| South Carolina | 12,662 | 894 | 1,837 | 289 |
| Iowa | 12,482 | 925 | 2,615 | 390 |
| Connecticut | 11,533 | 807 | 1,451 | 256 |
| Oklahoma | 10,492 | 851 | 1,603 | 325 |
| Alabama | 10,038 | 816 | 1,526 | 275 |
| Utah | 9,023 | 647 | 1,208 | 251 |
| North Dakota | 8,541 | 586 | 1,609 | 204 |
| Nevada | 7,998 | 703 | 1,127 | 232 |
| South Dakota | 7,691 | 601 | 1,353 | 275 |
| New Mexico | 7,580 | 731 | 1,527 | 280 |
| Montana | 7,122 | 621 | 1,265 | 280 |
| Nebraska | 5,690 | 457 | 764 | 140 |
| Arkansas | 5,488 | 604 | 819 | 202 |
| Louisiana | 5,412 | 521 | 722 | 179 |
| Hawaii | 4,615 | 724 | 823 | 350 |
| Idaho | 4,483 | 546 | 671 | 187 |
| New Hampshire | 3,920 | 502 | 344 | 101 |
| Alaska | 3,662 | 592 | 336 | 129 |
| Maine | 3,417 | 368 | 385 | 118 |
| Delaware | 3,191 | 430 | 572 | 181 |
| Mississippi | 3,143 | 403 | 689 | 203 |
| West Virginia | 2,891 | 391 | 652 | 197 |
| District of Columbia | 2,623 | 380 | 293 | 101 |
| Vermont | 2,180 | 344 | 307 | 89 |
| Rhode Island | 1,633 | 282 | 259 | 86 |
| Wyoming | 1,633 | 276 | 227 | 92 |
| Puerto Rico | 389 | 149 | 123 | 88 |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Los Angeles County [CA] | 23,832 | 1,315 | 3,067 | 351 |
| Cook County [IL] | 17,304 | 1,149 | 3,154 | 389 |
| Maricopa County [AZ] | 13,010 | 1,266 | 1,616 | 386 |
| San Diego County [CA] | 10,934 | 823 | 1,429 | 252 |
| New York County [NY] | 10,887 | 1,225 | 1,251 | 396 |
| King County [WA] | 10,685 | 845 | 870 | 192 |
| Harris County [TX] | 8,929 | 1,074 | 1,002 | 288 |
| Orange County [CA] | 8,635 | 708 | 1,067 | 229 |
| Oakland County [MI] | 6,856 | 641 | 1,047 | 221 |
| Santa Clara County [CA] | 6,514 | 658 | 940 | 229 |
| Pierce County [WA] | 6,242 | 608 | 1,549 | 322 |
| Bexar County [TX] | 6,151 | 750 | 795 | 196 |
| Queens County [NY] | 6,017 | 603 | 1,257 | 250 |
| Middlesex County [MA] | 5,981 | 648 | 580 | 142 |
| El Paso County [CO] | 5,819 | 627 | 772 | 230 |
| Clark County [NV] | 5,456 | 561 | 807 | 215 |
| Lancaster County [PA] | 5,353 | 707 | 1,434 | 386 |
| Fairfax County [VA] | 5,348 | 593 | 636 | 201 |
| Riverside County [CA] | 5,328 | 529 | 840 | 190 |
| Broward County [FL] | 5,280 | 504 | 903 | 239 |
| Suffolk County [NY] | 5,216 | 461 | 857 | 235 |
| Montgomery County [MD] | 5,205 | 618 | 808 | 219 |
| Cuyahoga County [OH] | 5,124 | 522 | 1,286 | 204 |
| Palm Beach County [FL] | 5,044 | 645 | 984 | 238 |
| Westchester County [NY] | 4,994 | 698 | 509 | 129 |
| Lee County [FL] | 4,948 | 681 | 1,049 | 265 |
| Alameda County [CA] | 4,909 | 575 | 502 | 164 |
| Pinellas County [FL] | 4,798 | 734 | 715 | 181 |
| San Francisco County [CA] | 4,639 | 531 | 389 | 143 |
| Miami-Dade County [FL] | 4,530 | 683 | 744 | 256 |
| Allegheny County [PA] | 4,524 | 431 | 679 | 130 |
| Hennepin County [MN] | 4,502 | 571 | 681 | 182 |
| Fairfield County [CT] | 4,276 | 502 | 550 | 132 |
| Milwaukee County [WI] | 4,262 | 446 | 751 | 175 |
| San Bernardino County [CA] | 4,243 | 750 | 468 | 191 |
| Sacramento County [CA] | 4,216 | 485 | 569 | 194 |
| Pima County [AZ] | 4,204 | 516 | 395 | 148 |
| Hillsborough County [FL] | 4,148 | 561 | 542 | 147 |
| DuPage County [IL] | 4,000 | 441 | 504 | 157 |
| Macomb County [MI] | 3,948 | 577 | 676 | 153 |
| Dallas County [TX] | 3,922 | 432 | 481 | 127 |
| Contra Costa County [CA] | 3,874 | 529 | 530 | 132 |
| San Mateo County [CA] | 3,818 | 445 | 431 | 154 |
| Nassau County [NY] | 3,768 | 431 | 505 | 130 |
| Hamilton County [OH] | 3,760 | 538 | 616 | 180 |
| Orange County [FL] | 3,655 | 609 | 715 | 290 |
| Kings County [NY] | 3,607 | 371 | 407 | 139 |
| Salt Lake County [UT] | 3,512 | 466 | 441 | 116 |
| St. Louis County [MO] | 3,459 | 496 | 678 | 221 |
| Tarrant County [TX] | 3,432 | 503 | 494 | 181 |
| Wayne County [MI] | 3,345 | 449 | 577 | 160 |
| Multnomah County [OR] | 3,324 | 477 | 369 | 128 |
| Bergen County [NJ] | 3,153 | 400 | 368 | 102 |
| Monroe County [NY] | 3,152 | 409 | 497 | 160 |
| Lake County [IL] | 3,118 | 406 | 522 | 144 |
| Fulton County [GA] | 3,110 | 456 | 532 | 190 |
| Mecklenburg County [NC] | 3,109 | 536 | 303 | 116 |
| Honolulu County [HI] | 3,065 | 617 | 692 | 356 |
| Travis County [TX] | 3,052 | 363 | 349 | 87 |
| Ventura County [CA] | 3,046 | 464 | 476 | 188 |
| Washington County [OR] | 2,985 | 520 | 303 | 155 |
| Philadelphia County [PA] | 2,943 | 373 | 499 | 167 |
| Morris County [NJ] | 2,890 | 486 | 473 | 135 |
| Bucks County [PA] | 2,790 | 320 | 452 | 133 |
| Montgomery County [PA] | 2,728 | 323 | 435 | 126 |
| Erie County [NY] | 2,706 | 348 | 538 | 164 |
| Snohomish County [WA] | 2,688 | 399 | 168 | 74 |
| District of Columbia [DC] | 2,623 | 380 | 293 | 101 |
| Franklin County [OH] | 2,564 | 308 | 367 | 103 |
| Arapahoe County [CO] | 2,472 | 398 | 268 | 97 |
| Wake County [NC] | 2,469 | 438 | 253 | 93 |
| Chester County [PA] | 2,451 | 382 | 346 | 106 |
| Collier County [FL] | 2,449 | 422 | 448 | 166 |
| Dane County [WI] | 2,400 | 354 | 406 | 115 |
| Cobb County [GA] | 2,393 | 371 | 193 | 87 |
| Duval County [FL] | 2,380 | 427 | 421 | 211 |
| Collin County [TX] | 2,237 | 406 | 362 | 132 |
| Denton County [TX] | 2,191 | 413 | 278 | 141 |
| Ocean County [NJ] | 2,187 | 311 | 442 | 134 |
| Burlington County [NJ] | 2,178 | 345 | 471 | 131 |
| Marion County [IN] | 2,150 | 410 | 199 | 85 |
| Suffolk County [MA] | 2,128 | 319 | 305 | 152 |
| Santa Barbara County [CA] | 2,124 | 289 | 419 | 193 |
| Bernalillo County [NM] | 2,118 | 359 | 202 | 64 |
| Loudoun County [VA] | 2,108 | 375 | 332 | 155 |
| Baltimore County [MD] | 2,090 | 334 | 175 | 72 |
| Essex County [MA] | 2,082 | 375 | 199 | 85 |
| Denver County [CO] | 2,071 | 387 | 171 | 75 |
| Sonoma County [CA] | 2,033 | 323 | 221 | 95 |
| Hartford County [CT] | 2,025 | 367 | 253 | 82 |
| New Haven County [CT] | 2,018 | 407 | 194 | 95 |
| Washtenaw County [MI] | 1,996 | 400 | 236 | 107 |
| Anne Arundel County [MD] | 1,992 | 321 | 218 | 101 |
| Ramsey County [MN] | 1,978 | 314 | 274 | 89 |
| Johnson County [KS] | 1,957 | 345 | 322 | 123 |
| Clark County [WA] | 1,946 | 329 | 217 | 87 |
| Monmouth County [NJ] | 1,926 | 362 | 314 | 108 |
| Virginia Beach city [VA] | 1,879 | 343 | 324 | 143 |
| Oklahoma County [OK] | 1,831 | 349 | 334 | 183 |
| DeKalb County [GA] | 1,811 | 340 | 246 | 91 |
| Norfolk County [MA] | 1,797 | 321 | 153 | 68 |
| Gwinnett County [GA] | 1,788 | 334 | 117 | 84 |
| Fresno County [CA] | 1,767 | 270 | 393 | 131 |
| Kane County [IL] | 1,755 | 306 | 341 | 138 |
| Anchorage Municipality [AK] | 1,743 | 353 | 225 | 120 |
| Middlesex County [NJ] | 1,727 | 297 | 232 | 91 |
| New Castle County [DE] | 1,719 | 259 | 207 | 77 |
| Worcester County [MA] | 1,657 | 313 | 151 | 69 |
| Somerset County [NJ] | 1,639 | 307 | 234 | 97 |
| Jefferson County [KY] | 1,633 | 304 | 343 | 160 |
| Will County [IL] | 1,622 | 287 | 203 | 89 |
| Monterey County [CA] | 1,561 | 350 | 183 | 82 |
| Prince William County [VA] | 1,528 | 367 | 172 | 88 |
| Union County [NJ] | 1,524 | 309 | 336 | 162 |
| Washoe County [NV] | 1,472 | 264 | 166 | 63 |
| Solano County [CA] | 1,443 | 289 | 204 | 100 |
| Mercer County [NJ] | 1,440 | 324 | 112 | 61 |
| Delaware County [PA] | 1,378 | 253 | 241 | 82 |
| Placer County [CA] | 1,335 | 270 | 216 | 101 |
| Davidson County [TN] | 1,320 | 262 | 180 | 87 |
| Shelby County [TN] | 1,280 | 283 | 93 | 59 |
| Prince George s County [MD] | 1,254 | 275 | 225 | 92 |
| Stanislaus County [CA] | 1,231 | 303 | 180 | 128 |
| San Joaquin County [CA] | 1,200 | 273 | 155 | 71 |
| Rockland County [NY] | 1,167 | 274 | 248 | 122 |
| Bronx County [NY] | 1,165 | 251 | 477 | 162 |
| Hillsborough County [NH] | 1,159 | 224 | 146 | 77 |
| Onondaga County [NY] | 1,158 | 198 | 248 | 101 |
| Essex County [NJ] | 1,147 | 252 | 135 | 69 |
| Passaic County [NJ] | 1,131 | 256 | 202 | 96 |
| Dakota County [MN] | 1,117 | 203 | 157 | 53 |
| Arlington County [VA] | 1,107 | 258 | 118 | 79 |
| Kern County [CA] | 1,101 | 238 | 128 | 58 |
| Camden County [NJ] | 1,075 | 219 | 208 | 133 |
| Guilford County [NC] | 1,066 | 260 | 120 | 78 |
| Polk County [IA] | 1,004 | 336 | 219 | 126 |
| Orange County [NY] | 968 | 232 | 232 | 127 |
| Baltimore city [MD] | 958 | 228 | 93 | 67 |
| Plymouth County [MA] | 944 | 218 | 121 | 91 |
| Howard County [MD] | 941 | 248 | 213 | 97 |
| Hudson County [NJ] | 802 | 171 | 70 | 50 |
| Providence County [RI] | 766 | 185 | 61 | 43 |
| Atlantic County [NJ] | 754 | 207 | 114 | 81 |
| Albany County [NY] | 725 | 152 | 130 | 64 |
| Hawaii County [HI] | 720 | 270 | 60 | 43 |
| Hampden County [MA] | 718 | 203 | 42 | 35 |
| Yolo County [CA] | 685 | 199 | 64 | 48 |
| Fort Bend County [TX] | 662 | 300 | 128 | 104 |
| Henrico County [VA] | 548 | 177 | 75 | 64 |
| Richmond County [NY] | 507 | 143 | 45 | 31 |
| Maui County [HI] | 491 | 178 | 71 | 56 |
| Jefferson Parish [LA] | 458 | 134 | 33 | 30 |
| Bristol County [MA] | 445 | 132 | 32 | 24 |
| San Juan County [NM] | 231 | 128 | 82 | 73 |
| Navajo County [AZ] | 87 | 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] | 60,112 | 1,908 | 9,240 | 632 |
| Chicago-Naperville-Elgin [IL-IN] | 33,074 | 1,548 | 5,640 | 516 |
| Los Angeles-Long Beach-Anaheim [CA] | 32,467 | 1,460 | 4,134 | 439 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 23,960 | 1,388 | 3,212 | 380 |
| San Francisco-Oakland-Hayward [CA] | 19,620 | 1,181 | 2,022 | 315 |
| Seattle-Tacoma-Bellevue [WA] | 19,615 | 1,113 | 2,587 | 409 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 18,540 | 919 | 3,022 | 372 |
| Detroit-Warren-Dearborn [MI] | 15,423 | 1,042 | 2,559 | 315 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 14,854 | 988 | 2,631 | 435 |
| Atlanta-Sandy Springs-Roswell [GA] | 14,741 | 1,021 | 1,695 | 294 |
| Phoenix-Mesa-Scottsdale [AZ] | 14,374 | 1,375 | 1,720 | 395 |
| Boston-Cambridge-Newton [MA-NH] | 14,089 | 1,001 | 1,453 | 255 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 13,754 | 798 | 2,019 | 260 |
| Dallas-Fort Worth-Arlington [TX] | 13,417 | 933 | 1,801 | 247 |
| Houston-The Woodlands-Sugar Land [TX] | 12,809 | 1,178 | 1,455 | 298 |
| Tampa-St. Petersburg-Clearwater [FL] | 12,103 | 1,089 | 1,905 | 305 |
| Cleveland-Elyria [OH] | 11,368 | 788 | 3,336 | 459 |
| Denver-Aurora-Lakewood [CO] | 11,113 | 864 | 1,266 | 206 |
| San Diego-Carlsbad [CA] | 10,934 | 823 | 1,429 | 252 |
| Portland-Vancouver-Hillsboro [OR-WA] | 10,155 | 861 | 1,142 | 222 |
| Riverside-San Bernardino-Ontario [CA] | 9,571 | 990 | 1,308 | 270 |
| St. Louis [MO-IL] | 9,327 | 847 | 1,446 | 326 |
| San Antonio-New Braunfels [TX] | 9,241 | 983 | 1,334 | 267 |
| Milwaukee-Waukesha-West Allis [WI] | 9,238 | 622 | 1,704 | 255 |
| Pittsburgh [PA] | 7,988 | 604 | 1,203 | 163 |
| Baltimore-Columbia-Towson [MD] | 7,914 | 627 | 1,004 | 204 |
| Cincinnati [OH-KY-IN] | 7,756 | 762 | 1,345 | 287 |
| Sacramento-Roseville-Arden-Arcade [CA] | 7,113 | 723 | 989 | 268 |
| Orlando-Kissimmee-Sanford [FL] | 6,652 | 813 | 1,153 | 347 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 6,644 | 486 | 927 | 220 |
| San Jose-Sunnyvale-Santa Clara [CA] | 6,619 | 648 | 940 | 229 |
| Charlotte-Concord-Gastonia [NC-SC] | 6,186 | 702 | 753 | 172 |
| Colorado Springs [CO] | 5,997 | 643 | 795 | 232 |
| Austin-Round Rock [TX] | 5,793 | 543 | 698 | 143 |
| Las Vegas-Henderson-Paradise [NV] | 5,456 | 561 | 807 | 215 |
| Lancaster [PA] | 5,353 | 707 | 1,434 | 386 |
| Columbus [OH] | 5,142 | 529 | 1,072 | 350 |
| New York-Newark-Jersey City [NY-NJ-PA] | 4,998 | 514 | 875 | 201 |
| Kansas City [MO-KS] | 4,960 | 541 | 667 | 175 |
| Cape Coral-Fort Myers [FL] | 4,948 | 681 | 1,049 | 265 |
| Indianapolis-Carmel-Anderson [IN] | 4,945 | 689 | 494 | 154 |
| Rochester [NY] | 4,732 | 633 | 805 | 201 |
| Bridgeport-Stamford-Norwalk [CT] | 4,276 | 502 | 550 | 132 |
| Tucson [AZ] | 4,204 | 516 | 395 | 148 |
| Jacksonville [FL] | 4,118 | 581 | 780 | 262 |
| Allentown-Bethlehem-Easton [PA-NJ] | 4,093 | 560 | 804 | 235 |
| Richmond [VA] | 3,867 | 511 | 616 | 168 |
| Salt Lake City [UT] | 3,693 | 460 | 485 | 126 |
| Hartford-West Hartford-East Hartford [CT] | 3,425 | 461 | 397 | 133 |
| Madison [WI] | 3,425 | 375 | 561 | 126 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 3,194 | 331 | 608 | 160 |
| Oklahoma City [OK] | 3,186 | 508 | 396 | 192 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 3,137 | 384 | 384 | 133 |
| Urban Honolulu [HI] | 3,065 | 617 | 692 | 356 |
| Oxnard-Thousand Oaks-Ventura [CA] | 3,046 | 464 | 476 | 188 |
| Dayton [OH] | 2,855 | 449 | 411 | 105 |
| Albuquerque [NM] | 2,838 | 454 | 369 | 106 |
| Raleigh [NC] | 2,804 | 453 | 253 | 93 |
| Louisville Jefferson County [KY] | 2,715 | 438 | 536 | 210 |
| Harrisburg-Carlisle [PA] | 2,694 | 323 | 494 | 155 |
| Albany-Schenectady-Troy [NY] | 2,594 | 361 | 456 | 146 |
| Deltona-Daytona Beach-Ormond Beach [FL] | 2,477 | 444 | 506 | 201 |
| Grand Rapids-Wyoming [MI] | 2,458 | 347 | 412 | 147 |
| Naples-Immokalee-Marco Island [FL] | 2,449 | 422 | 448 | 166 |
| Akron [OH] | 2,437 | 365 | 360 | 130 |
| Omaha-Council Bluffs [NE-IA] | 2,164 | 334 | 320 | 97 |
| Anchorage [AK] | 2,142 | 374 | 256 | 122 |
| Santa Maria-Santa Barbara [CA] | 2,124 | 289 | 419 | 193 |
| Providence-Warwick [RI-MA] | 2,078 | 316 | 291 | 90 |
| Santa Rosa [CA] | 2,033 | 323 | 221 | 95 |
| New Haven-Milford [CT] | 2,018 | 407 | 194 | 95 |
| Ann Arbor [MI] | 1,996 | 400 | 236 | 107 |
| Worcester [MA-CT] | 1,925 | 347 | 167 | 71 |
| Syracuse [NY] | 1,901 | 232 | 335 | 112 |
| Tulsa [OK] | 1,865 | 246 | 352 | 116 |
| Spokane-Spokane Valley [WA] | 1,847 | 336 | 226 | 105 |
| Durham-Chapel Hill [NC] | 1,825 | 344 | 148 | 80 |
| Fresno [CA] | 1,767 | 270 | 393 | 131 |
| Memphis [TN-MS-AR] | 1,726 | 347 | 123 | 67 |
| Lansing-East Lansing [MI] | 1,579 | 234 | 240 | 77 |
| Salinas [CA] | 1,561 | 350 | 183 | 82 |
| New Orleans-Metairie [LA] | 1,498 | 214 | 200 | 79 |
| Greensboro-High Point [NC] | 1,475 | 328 | 182 | 104 |
| Reno [NV] | 1,472 | 264 | 166 | 63 |
| Vallejo-Fairfield [CA] | 1,443 | 289 | 204 | 100 |
| Trenton [NJ] | 1,440 | 324 | 112 | 61 |
| Des Moines-West Des Moines [IA] | 1,397 | 375 | 327 | 147 |
| Modesto [CA] | 1,231 | 303 | 180 | 128 |
| Portland-South Portland [ME] | 1,205 | 228 | 158 | 71 |
| Stockton-Lodi [CA] | 1,200 | 273 | 155 | 71 |
| Manchester-Nashua [NH] | 1,159 | 224 | 146 | 77 |
| Springfield [MA] | 1,116 | 240 | 92 | 63 |
| Bakersfield [CA] | 1,101 | 238 | 128 | 58 |
| Baton Rouge [LA] | 909 | 210 | 69 | 46 |
| Atlantic City-Hammonton [NJ] | 754 | 207 | 114 | 81 |
| Hilo [HI] | 720 | 270 | 60 | 43 |
| Lafayette [LA] | 615 | 227 | 33 | 37 |
| Kahului-Wailuku-Lahaina [HI] | 491 | 178 | 71 | 56 |
| Farmington [NM] | 231 | 128 | 82 | 73 |
| Show Low [AZ] | 87 | 60 | (B) | - |