| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 879,434 | 11,909 | 416,526 | 6,732 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| New York | 226,290 | 4,082 | 130,848 | 2,773 |
| California | 151,685 | 4,956 | 74,239 | 2,957 |
| Washington | 56,537 | 2,888 | 26,219 | 1,775 |
| New Jersey | 44,795 | 2,255 | 18,888 | 1,368 |
| Illinois | 41,404 | 1,992 | 19,575 | 1,215 |
| Massachusetts | 36,549 | 1,939 | 16,341 | 1,181 |
| Florida | 35,974 | 2,646 | 16,148 | 1,584 |
| Pennsylvania | 35,394 | 2,012 | 17,091 | 1,189 |
| Oregon | 21,884 | 2,124 | 9,177 | 1,021 |
| Maryland | 21,388 | 1,483 | 8,535 | 843 |
| Texas | 20,630 | 1,726 | 6,663 | 724 |
| Ohio | 16,917 | 1,381 | 8,416 | 808 |
| Colorado | 15,124 | 1,565 | 6,279 | 807 |
| Georgia | 14,848 | 1,466 | 5,342 | 831 |
| Virginia | 14,668 | 1,278 | 5,056 | 704 |
| Minnesota | 14,039 | 1,143 | 6,479 | 647 |
| Michigan | 11,819 | 935 | 5,165 | 533 |
| Connecticut | 10,684 | 932 | 4,920 | 527 |
| North Carolina | 10,351 | 1,384 | 3,495 | 591 |
| Missouri | 8,678 | 899 | 4,225 | 667 |
| Arizona | 6,602 | 1,031 | 2,045 | 396 |
| Wisconsin | 5,758 | 721 | 2,509 | 370 |
| Nevada | 5,168 | 812 | 1,810 | 419 |
| Indiana | 4,835 | 879 | 1,980 | 482 |
| Alaska | 4,426 | 667 | 1,015 | 230 |
| South Carolina | 4,307 | 702 | 1,498 | 372 |
| Utah | 4,118 | 574 | 1,275 | 262 |
| Tennessee | 4,004 | 640 | 1,392 | 354 |
| Kansas | 2,860 | 728 | 733 | 228 |
| Kentucky | 2,108 | 386 | 959 | 252 |
| Iowa | 1,936 | 436 | 637 | 158 |
| District of Columbia | 1,895 | 342 | 407 | 175 |
| Oklahoma | 1,880 | 360 | 458 | 168 |
| Idaho | 1,878 | 454 | 681 | 228 |
| Louisiana | 1,779 | 476 | 520 | 216 |
| New Hampshire | 1,774 | 417 | 575 | 199 |
| Rhode Island | 1,719 | 369 | 773 | 194 |
| Maine | 1,567 | 470 | 568 | 253 |
| New Mexico | 1,341 | 368 | 304 | 140 |
| Alabama | 1,325 | 293 | 480 | 176 |
| Nebraska | 1,324 | 274 | 576 | 176 |
| Hawaii | 1,169 | 314 | 347 | 124 |
| Delaware | 999 | 334 | 294 | 218 |
| South Dakota | 885 | 252 | 247 | 119 |
| West Virginia | 760 | 304 | 163 | 121 |
| North Dakota | 746 | 295 | 306 | 139 |
| Vermont | 672 | 204 | 168 | 95 |
| Montana | 615 | 242 | 358 | 150 |
| Arkansas | 515 | 162 | 148 | 82 |
| Mississippi | 467 | 186 | 151 | 68 |
| Wyoming | 344 | 189 | 48 | 35 |
| Puerto Rico | 71 | 106 | 5 | 7 |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Kings County [NY] | 127,790 | 2,642 | 87,256 | 2,143 |
| Los Angeles County [CA] | 49,310 | 2,573 | 26,325 | 1,484 |
| Queens County [NY] | 35,197 | 2,060 | 18,409 | 1,052 |
| Cook County [IL] | 26,215 | 1,571 | 14,018 | 991 |
| Sacramento County [CA] | 25,318 | 2,074 | 13,973 | 1,264 |
| King County [WA] | 19,380 | 1,516 | 8,598 | 739 |
| Richmond County [NY] | 15,299 | 1,439 | 6,353 | 718 |
| San Francisco County [CA] | 13,003 | 1,124 | 7,696 | 844 |
| Middlesex County [MA] | 12,372 | 1,135 | 4,850 | 679 |
| New York County [NY] | 11,833 | 1,491 | 3,485 | 716 |
| Philadelphia County [PA] | 11,703 | 1,166 | 7,559 | 800 |
| Bergen County [NJ] | 11,651 | 1,243 | 4,966 | 761 |
| Santa Clara County [CA] | 11,580 | 981 | 4,197 | 492 |
| Clark County [WA] | 10,168 | 1,435 | 5,546 | 931 |
| Multnomah County [OR] | 9,721 | 1,354 | 4,761 | 748 |
| Lake County [IL] | 9,240 | 949 | 3,209 | 358 |
| San Diego County [CA] | 8,813 | 1,083 | 4,176 | 639 |
| Montgomery County [MD] | 7,834 | 965 | 2,725 | 468 |
| Bucks County [PA] | 7,732 | 890 | 3,394 | 468 |
| Middlesex County [NJ] | 7,117 | 729 | 3,549 | 461 |
| San Mateo County [CA] | 7,063 | 908 | 2,507 | 379 |
| Miami-Dade County [FL] | 6,972 | 1,059 | 3,560 | 672 |
| Baltimore County [MD] | 6,839 | 858 | 3,689 | 502 |
| Nassau County [NY] | 6,466 | 970 | 2,214 | 397 |
| Norfolk County [MA] | 6,380 | 893 | 2,512 | 392 |
| Broward County [FL] | 6,295 | 943 | 3,070 | 618 |
| Snohomish County [WA] | 6,148 | 1,077 | 2,712 | 612 |
| Pierce County [WA] | 6,126 | 897 | 2,810 | 518 |
| Cuyahoga County [OH] | 6,101 | 726 | 3,353 | 476 |
| Hennepin County [MN] | 5,943 | 814 | 2,729 | 409 |
| Orange County [CA] | 5,757 | 851 | 2,033 | 387 |
| Oakland County [MI] | 5,530 | 684 | 2,854 | 343 |
| Contra Costa County [CA] | 5,346 | 712 | 2,887 | 453 |
| Harris County [TX] | 5,295 | 837 | 1,911 | 488 |
| Suffolk County [MA] | 5,177 | 522 | 3,062 | 359 |
| Arapahoe County [CO] | 5,003 | 808 | 2,050 | 349 |
| Monmouth County [NJ] | 4,745 | 613 | 1,831 | 335 |
| Fulton County [GA] | 4,726 | 843 | 1,731 | 445 |
| Maricopa County [AZ] | 4,682 | 869 | 1,405 | 344 |
| Hampden County [MA] | 4,500 | 820 | 2,312 | 564 |
| Clark County [NV] | 4,417 | 760 | 1,526 | 422 |
| Fairfax County [VA] | 4,191 | 727 | 1,336 | 427 |
| Fairfield County [CT] | 4,136 | 710 | 1,742 | 306 |
| Alameda County [CA] | 4,048 | 614 | 1,741 | 351 |
| Essex County [MA] | 4,006 | 650 | 2,095 | 393 |
| Westchester County [NY] | 3,255 | 590 | 695 | 202 |
| Suffolk County [NY] | 3,179 | 541 | 1,318 | 312 |
| Denver County [CO] | 3,102 | 702 | 1,812 | 421 |
| Franklin County [OH] | 3,069 | 576 | 1,547 | 346 |
| Mecklenburg County [NC] | 3,048 | 784 | 1,216 | 396 |
| Yolo County [CA] | 3,035 | 660 | 2,021 | 567 |
| Bronx County [NY] | 3,019 | 648 | 1,701 | 367 |
| St. Louis County [MO] | 2,944 | 599 | 1,604 | 440 |
| Essex County [NJ] | 2,924 | 472 | 1,070 | 267 |
| Gwinnett County [GA] | 2,843 | 766 | 1,312 | 412 |
| Allegheny County [PA] | 2,797 | 570 | 1,094 | 292 |
| Placer County [CA] | 2,789 | 858 | 873 | 336 |
| Union County [NJ] | 2,779 | 592 | 1,252 | 324 |
| Hartford County [CT] | 2,754 | 458 | 1,456 | 278 |
| Erie County [NY] | 2,739 | 589 | 1,587 | 485 |
| Monroe County [NY] | 2,739 | 579 | 1,406 | 351 |
| Montgomery County [PA] | 2,494 | 440 | 653 | 173 |
| Collin County [TX] | 2,489 | 536 | 903 | 237 |
| Morris County [NJ] | 2,355 | 434 | 965 | 259 |
| Milwaukee County [WI] | 2,337 | 449 | 1,393 | 285 |
| Rockland County [NY] | 2,323 | 473 | 1,043 | 220 |
| Palm Beach County [FL] | 2,316 | 432 | 880 | 246 |
| Passaic County [NJ] | 2,313 | 540 | 1,064 | 294 |
| DuPage County [IL] | 2,294 | 518 | 826 | 260 |
| Washington County [OR] | 2,279 | 514 | 966 | 281 |
| Salt Lake County [UT] | 2,255 | 444 | 818 | 204 |
| New Haven County [CT] | 2,231 | 485 | 1,286 | 304 |
| Duval County [FL] | 2,214 | 507 | 972 | 362 |
| Camden County [NJ] | 2,172 | 659 | 793 | 211 |
| Worcester County [MA] | 2,111 | 499 | 811 | 249 |
| Hudson County [NJ] | 2,064 | 342 | 775 | 207 |
| Orange County [FL] | 2,052 | 530 | 648 | 226 |
| Pinellas County [FL] | 1,980 | 545 | 846 | 312 |
| Dallas County [TX] | 1,913 | 474 | 747 | 265 |
| District of Columbia [DC] | 1,895 | 342 | 407 | 175 |
| Tarrant County [TX] | 1,835 | 568 | 522 | 245 |
| Dakota County [MN] | 1,764 | 377 | 884 | 240 |
| Riverside County [CA] | 1,716 | 392 | 687 | 251 |
| Johnson County [KS] | 1,672 | 454 | 561 | 203 |
| Hillsborough County [FL] | 1,663 | 504 | 553 | 267 |
| Travis County [TX] | 1,581 | 359 | 363 | 190 |
| Baltimore city [MD] | 1,558 | 399 | 698 | 246 |
| Hamilton County [OH] | 1,529 | 374 | 705 | 247 |
| Ventura County [CA] | 1,511 | 421 | 357 | 178 |
| Cobb County [GA] | 1,506 | 486 | 496 | 214 |
| Somerset County [NJ] | 1,493 | 445 | 285 | 101 |
| DeKalb County [GA] | 1,480 | 454 | 508 | 186 |
| Fresno County [CA] | 1,459 | 542 | 511 | 205 |
| Bexar County [TX] | 1,405 | 422 | 415 | 179 |
| San Bernardino County [CA] | 1,354 | 498 | 548 | 282 |
| Anchorage Municipality [AK] | 1,320 | 345 | 317 | 151 |
| Arlington County [VA] | 1,296 | 375 | 394 | 172 |
| Pima County [AZ] | 1,279 | 354 | 489 | 185 |
| Onondaga County [NY] | 1,258 | 334 | 588 | 177 |
| Mercer County [NJ] | 1,253 | 361 | 342 | 140 |
| Ocean County [NJ] | 1,218 | 363 | 783 | 296 |
| El Paso County [CO] | 1,175 | 375 | 273 | 135 |
| Howard County [MD] | 1,163 | 359 | 354 | 134 |
| Denton County [TX] | 1,160 | 347 | 380 | 179 |
| Providence County [RI] | 1,135 | 261 | 609 | 172 |
| Jefferson County [KY] | 1,130 | 328 | 590 | 203 |
| Henrico County [VA] | 1,122 | 362 | 651 | 245 |
| Davidson County [TN] | 1,105 | 404 | 326 | 166 |
| Ramsey County [MN] | 1,094 | 351 | 551 | 206 |
| Marion County [IN] | 1,079 | 383 | 404 | 152 |
| Wake County [NC] | 1,025 | 293 | 203 | 89 |
| Lancaster County [PA] | 1,006 | 425 | 534 | 245 |
| Sonoma County [CA] | 969 | 358 | 244 | 138 |
| Fort Bend County [TX] | 967 | 468 | 352 | 203 |
| Washtenaw County [MI] | 946 | 265 | 300 | 134 |
| Albany County [NY] | 944 | 282 | 366 | 111 |
| Hillsborough County [NH] | 938 | 311 | 321 | 161 |
| Virginia Beach city [VA] | 930 | 293 | 361 | 135 |
| Dane County [WI] | 911 | 310 | 256 | 102 |
| Wayne County [MI] | 864 | 236 | 428 | 157 |
| Orange County [NY] | 827 | 274 | 387 | 175 |
| Prince George s County [MD] | 772 | 220 | 185 | 80 |
| Collier County [FL] | 765 | 338 | 316 | 243 |
| Chester County [PA] | 740 | 271 | 273 | 138 |
| Santa Barbara County [CA] | 736 | 204 | 186 | 88 |
| Loudoun County [VA] | 692 | 304 | 221 | 125 |
| Atlantic County [NJ] | 689 | 247 | 247 | 118 |
| Bernalillo County [NM] | 684 | 271 | 145 | 89 |
| Kane County [IL] | 673 | 350 | 239 | 159 |
| Anne Arundel County [MD] | 663 | 289 | 78 | 54 |
| Honolulu County [HI] | 644 | 191 | 202 | 77 |
| Lee County [FL] | 624 | 280 | 187 | 112 |
| Shelby County [TN] | 605 | 217 | 176 | 92 |
| Delaware County [PA] | 599 | 216 | 260 | 124 |
| Kern County [CA] | 585 | 257 | 189 | 97 |
| New Castle County [DE] | 575 | 185 | 110 | 68 |
| Macomb County [MI] | 566 | 239 | 322 | 191 |
| Prince William County [VA] | 551 | 244 | 217 | 134 |
| Stanislaus County [CA] | 534 | 231 | 220 | 168 |
| Washoe County [NV] | 517 | 228 | 163 | 105 |
| Solano County [CA] | 516 | 174 | 245 | 115 |
| Polk County [IA] | 515 | 194 | 271 | 116 |
| San Joaquin County [CA] | 508 | 190 | 272 | 163 |
| Burlington County [NJ] | 505 | 183 | 177 | 90 |
| Monterey County [CA] | 420 | 168 | 160 | 90 |
| Hawaii County [HI] | 377 | 258 | 115 | 93 |
| Oklahoma County [OK] | 373 | 129 | 55 | 38 |
| Bristol County [MA] | 363 | 221 | 136 | 109 |
| Guilford County [NC] | 298 | 186 | 186 | 125 |
| Plymouth County [MA] | 249 | 140 | 58 | 64 |
| Jefferson Parish [LA] | 220 | 88 | 59 | 53 |
| Will County [IL] | 207 | 122 | 80 | 82 |
| Maui County [HI] | 83 | 60 | (B) | - |
| Navajo County [AZ] | 56 | 89 | (B) | - |
| San Juan County [NM] | 3 | 6 | (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] | 249,420 | 4,499 | 139,842 | 3,099 |
| Los Angeles-Long Beach-Anaheim [CA] | 55,067 | 2,781 | 28,358 | 1,534 |
| Chicago-Naperville-Elgin [IL-IN] | 39,551 | 1,860 | 18,620 | 1,138 |
| Seattle-Tacoma-Bellevue [WA] | 31,654 | 2,252 | 14,120 | 1,095 |
| Sacramento-Roseville-Arden-Arcade [CA] | 31,487 | 2,415 | 17,026 | 1,523 |
| San Francisco-Oakland-Hayward [CA] | 30,857 | 1,875 | 15,321 | 1,208 |
| Boston-Cambridge-Newton [MA-NH] | 28,539 | 1,507 | 12,695 | 949 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 27,069 | 1,971 | 13,495 | 1,125 |
| Portland-Vancouver-Hillsboro [OR-WA] | 25,638 | 2,127 | 12,474 | 1,275 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 19,718 | 1,442 | 6,097 | 703 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 15,583 | 1,623 | 7,510 | 953 |
| Atlanta-Sandy Springs-Roswell [GA] | 13,331 | 1,474 | 5,051 | 804 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 12,539 | 1,185 | 6,089 | 660 |
| Denver-Aurora-Lakewood [CO] | 11,682 | 1,398 | 5,393 | 746 |
| San Jose-Sunnyvale-Santa Clara [CA] | 11,580 | 981 | 4,197 | 492 |
| Baltimore-Columbia-Towson [MD] | 10,910 | 1,078 | 5,086 | 640 |
| San Diego-Carlsbad [CA] | 8,813 | 1,083 | 4,176 | 639 |
| Dallas-Fort Worth-Arlington [TX] | 7,759 | 1,057 | 2,728 | 497 |
| Spokane-Spokane Valley [WA] | 7,610 | 1,228 | 3,928 | 770 |
| Houston-The Woodlands-Sugar Land [TX] | 7,416 | 1,224 | 2,550 | 528 |
| Detroit-Warren-Dearborn [MI] | 7,303 | 746 | 3,751 | 410 |
| Cleveland-Elyria [OH] | 7,019 | 832 | 3,713 | 519 |
| Springfield [MA] | 4,783 | 833 | 2,319 | 564 |
| Phoenix-Mesa-Scottsdale [AZ] | 4,760 | 872 | 1,464 | 347 |
| Charlotte-Concord-Gastonia [NC-SC] | 4,703 | 985 | 1,713 | 424 |
| Las Vegas-Henderson-Paradise [NV] | 4,417 | 760 | 1,526 | 422 |
| Tampa-St. Petersburg-Clearwater [FL] | 4,364 | 846 | 1,613 | 456 |
| St. Louis [MO-IL] | 4,244 | 653 | 2,022 | 489 |
| Bridgeport-Stamford-Norwalk [CT] | 4,136 | 710 | 1,742 | 306 |
| Columbus [OH] | 3,605 | 616 | 1,773 | 360 |
| Pittsburgh [PA] | 3,453 | 558 | 1,271 | 289 |
| Milwaukee-Waukesha-West Allis [WI] | 3,444 | 556 | 1,840 | 339 |
| Cincinnati [OH-KY-IN] | 3,337 | 648 | 1,629 | 426 |
| Hartford-West Hartford-East Hartford [CT] | 3,270 | 487 | 1,543 | 294 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 3,173 | 651 | 1,700 | 508 |
| Orlando-Kissimmee-Sanford [FL] | 3,092 | 608 | 1,148 | 292 |
| Rochester [NY] | 3,089 | 601 | 1,587 | 381 |
| Riverside-San Bernardino-Ontario [CA] | 3,070 | 608 | 1,235 | 400 |
| Jacksonville [FL] | 2,847 | 669 | 1,230 | 451 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 2,575 | 451 | 1,177 | 309 |
| Kansas City [MO-KS] | 2,349 | 463 | 965 | 227 |
| Anchorage [AK] | 2,323 | 514 | 520 | 174 |
| Salt Lake City [UT] | 2,299 | 459 | 836 | 204 |
| New Haven-Milford [CT] | 2,231 | 485 | 1,286 | 304 |
| Deltona-Daytona Beach-Ormond Beach [FL] | 2,189 | 690 | 1,504 | 583 |
| Worcester [MA-CT] | 2,183 | 488 | 824 | 250 |
| Providence-Warwick [RI-MA] | 2,082 | 449 | 909 | 230 |
| New York-Newark-Jersey City [NY-NJ-PA] | 2,009 | 508 | 1,013 | 283 |
| Austin-Round Rock [TX] | 1,930 | 407 | 404 | 201 |
| Albany-Schenectady-Troy [NY] | 1,926 | 477 | 715 | 178 |
| Indianapolis-Carmel-Anderson [IN] | 1,924 | 533 | 764 | 257 |
| San Antonio-New Braunfels [TX] | 1,692 | 465 | 470 | 187 |
| Richmond [VA] | 1,678 | 375 | 741 | 236 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 1,554 | 442 | 453 | 188 |
| Oxnard-Thousand Oaks-Ventura [CA] | 1,511 | 421 | 357 | 178 |
| Fresno [CA] | 1,459 | 542 | 511 | 205 |
| Syracuse [NY] | 1,386 | 324 | 634 | 172 |
| Louisville Jefferson County [KY] | 1,346 | 350 | 646 | 206 |
| Tucson [AZ] | 1,279 | 354 | 489 | 185 |
| Trenton [NJ] | 1,253 | 361 | 342 | 140 |
| Colorado Springs [CO] | 1,246 | 376 | 273 | 135 |
| Portland-South Portland [ME] | 1,203 | 451 | 438 | 233 |
| Durham-Chapel Hill [NC] | 1,135 | 386 | 175 | 97 |
| Raleigh [NC] | 1,111 | 297 | 239 | 103 |
| Lancaster [PA] | 1,006 | 425 | 534 | 245 |
| Harrisburg-Carlisle [PA] | 973 | 310 | 396 | 168 |
| Santa Rosa [CA] | 969 | 358 | 244 | 138 |
| Ann Arbor [MI] | 946 | 265 | 300 | 134 |
| Manchester-Nashua [NH] | 938 | 311 | 321 | 161 |
| Madison [WI] | 921 | 310 | 256 | 102 |
| Akron [OH] | 906 | 292 | 564 | 203 |
| Grand Rapids-Wyoming [MI] | 901 | 253 | 250 | 105 |
| Tulsa [OK] | 830 | 265 | 290 | 128 |
| New Orleans-Metairie [LA] | 768 | 262 | 259 | 161 |
| Naples-Immokalee-Marco Island [FL] | 765 | 338 | 316 | 243 |
| Santa Maria-Santa Barbara [CA] | 736 | 204 | 186 | 88 |
| Allentown-Bethlehem-Easton [PA-NJ] | 735 | 230 | 237 | 105 |
| Albuquerque [NM] | 722 | 275 | 147 | 91 |
| Lansing-East Lansing [MI] | 698 | 295 | 296 | 163 |
| Atlantic City-Hammonton [NJ] | 689 | 247 | 247 | 118 |
| Dayton [OH] | 683 | 271 | 300 | 156 |
| Oklahoma City [OK] | 671 | 200 | 116 | 76 |
| Memphis [TN-MS-AR] | 670 | 225 | 194 | 97 |
| Urban Honolulu [HI] | 644 | 191 | 202 | 77 |
| Cape Coral-Fort Myers [FL] | 624 | 280 | 187 | 112 |
| Bakersfield [CA] | 585 | 257 | 189 | 97 |
| Des Moines-West Des Moines [IA] | 568 | 205 | 282 | 117 |
| Modesto [CA] | 534 | 231 | 220 | 168 |
| Omaha-Council Bluffs [NE-IA] | 533 | 151 | 215 | 95 |
| Reno [NV] | 517 | 228 | 163 | 105 |
| Vallejo-Fairfield [CA] | 516 | 174 | 245 | 115 |
| Stockton-Lodi [CA] | 508 | 190 | 272 | 163 |
| Salinas [CA] | 420 | 168 | 160 | 90 |
| Baton Rouge [LA] | 397 | 306 | 50 | 50 |
| Hilo [HI] | 377 | 258 | 115 | 93 |
| Greensboro-High Point [NC] | 313 | 193 | 186 | 125 |
| Kahului-Wailuku-Lahaina [HI] | 83 | 60 | (B) | - |
| Show Low [AZ] | 56 | 89 | (B) | - |
| Lafayette [LA] | 18 | 18 | (B) | - |
| Farmington [NM] | 3 | 6 | (B) | - |