| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 580,153 | 7,412 | 235,241 | 3,866 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Illinois | 185,121 | 4,705 | 91,438 | 2,828 |
| New York | 95,175 | 3,071 | 42,182 | 1,904 |
| New Jersey | 66,346 | 2,552 | 28,828 | 1,481 |
| Connecticut | 37,704 | 2,251 | 15,640 | 1,241 |
| Florida | 23,937 | 1,642 | 8,859 | 1,020 |
| Pennsylvania | 23,470 | 1,661 | 7,700 | 878 |
| Michigan | 23,042 | 1,302 | 6,918 | 603 |
| California | 19,699 | 1,266 | 5,805 | 647 |
| Massachusetts | 19,235 | 1,226 | 6,255 | 834 |
| Ohio | 9,504 | 758 | 2,575 | 347 |
| Texas | 8,276 | 822 | 2,124 | 386 |
| Wisconsin | 6,894 | 603 | 1,733 | 276 |
| Arizona | 5,844 | 691 | 1,487 | 357 |
| Colorado | 5,365 | 649 | 1,175 | 321 |
| Indiana | 4,965 | 620 | 1,361 | 323 |
| Washington | 4,818 | 673 | 1,396 | 301 |
| Maryland | 4,356 | 698 | 1,148 | 275 |
| Georgia | 3,767 | 792 | 1,105 | 358 |
| Virginia | 3,514 | 593 | 547 | 188 |
| North Carolina | 3,248 | 574 | 737 | 196 |
| Minnesota | 2,923 | 403 | 605 | 143 |
| Nevada | 2,496 | 551 | 460 | 176 |
| Rhode Island | 2,149 | 428 | 641 | 181 |
| South Carolina | 1,700 | 409 | 524 | 179 |
| Missouri | 1,500 | 298 | 409 | 136 |
| New Hampshire | 1,320 | 373 | 479 | 209 |
| Tennessee | 1,294 | 274 | 438 | 151 |
| Oregon | 1,183 | 306 | 323 | 155 |
| Delaware | 1,014 | 257 | 220 | 103 |
| Utah | 937 | 427 | 198 | 106 |
| Nebraska | 919 | 232 | 174 | 59 |
| Louisiana | 844 | 229 | 80 | 48 |
| Oklahoma | 712 | 333 | 188 | 144 |
| Vermont | 706 | 190 | 103 | 59 |
| Maine | 673 | 180 | 182 | 98 |
| Kentucky | 535 | 175 | 123 | 82 |
| Iowa | 522 | 130 | 147 | 75 |
| Hawaii | 513 | 193 | 164 | 107 |
| District of Columbia | 483 | 154 | 52 | 42 |
| New Mexico | 477 | 172 | 95 | 68 |
| Kansas | 469 | 187 | 75 | 59 |
| Alaska | 426 | 158 | 186 | 107 |
| Alabama | 384 | 135 | 73 | 53 |
| West Virginia | 369 | 142 | 46 | 40 |
| Arkansas | 315 | 136 | 103 | 75 |
| Montana | 251 | 105 | 28 | 21 |
| Idaho | 225 | 103 | 73 | 57 |
| North Dakota | 185 | 80 | 21 | 13 |
| Mississippi | 175 | 110 | (B) | - |
| Wyoming | 106 | 65 | 14 | 23 |
| South Dakota | 68 | 39 | 4 | 8 |
| Puerto Rico | 43 | 60 | 7 | 12 |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Cook County [IL] | 141,431 | 3,692 | 75,073 | 2,440 |
| Queens County [NY] | 24,622 | 1,706 | 12,031 | 1,016 |
| Kings County [NY] | 21,569 | 1,320 | 12,868 | 938 |
| Hartford County [CT] | 18,918 | 1,383 | 8,835 | 915 |
| Bergen County [NJ] | 16,254 | 1,183 | 8,270 | 731 |
| DuPage County [IL] | 15,668 | 1,448 | 6,512 | 744 |
| Middlesex County [NJ] | 8,738 | 966 | 3,685 | 593 |
| Will County [IL] | 8,640 | 1,034 | 3,271 | 600 |
| Fairfield County [CT] | 8,021 | 959 | 3,435 | 558 |
| Suffolk County [NY] | 7,844 | 975 | 3,710 | 659 |
| Macomb County [MI] | 7,448 | 867 | 2,506 | 403 |
| Erie County [NY] | 7,306 | 665 | 1,661 | 314 |
| Passaic County [NJ] | 7,105 | 1,073 | 3,034 | 551 |
| Lake County [IL] | 6,846 | 848 | 2,047 | 288 |
| Union County [NJ] | 6,647 | 784 | 3,291 | 518 |
| Nassau County [NY] | 5,799 | 1,015 | 1,886 | 411 |
| New Haven County [CT] | 5,729 | 922 | 1,999 | 423 |
| Wayne County [MI] | 5,648 | 550 | 1,950 | 306 |
| Los Angeles County [CA] | 5,390 | 542 | 1,657 | 288 |
| Hudson County [NJ] | 4,907 | 690 | 2,075 | 402 |
| New York County [NY] | 4,708 | 994 | 1,672 | 569 |
| Philadelphia County [PA] | 4,561 | 715 | 2,308 | 472 |
| Mercer County [NJ] | 4,534 | 758 | 2,112 | 466 |
| Hampden County [MA] | 4,526 | 736 | 1,741 | 414 |
| Cuyahoga County [OH] | 4,433 | 450 | 1,413 | 245 |
| Maricopa County [AZ] | 4,336 | 555 | 1,019 | 274 |
| Richmond County [NY] | 4,022 | 813 | 1,751 | 398 |
| Worcester County [MA] | 3,801 | 568 | 1,453 | 366 |
| Oakland County [MI] | 3,698 | 567 | 911 | 250 |
| Broward County [FL] | 3,246 | 557 | 1,002 | 292 |
| Kane County [IL] | 3,177 | 677 | 1,267 | 452 |
| Westchester County [NY] | 2,982 | 565 | 1,140 | 268 |
| Pinellas County [FL] | 2,779 | 524 | 1,472 | 425 |
| Somerset County [NJ] | 2,719 | 575 | 1,141 | 302 |
| Morris County [NJ] | 2,668 | 438 | 976 | 237 |
| Palm Beach County [FL] | 2,439 | 487 | 801 | 256 |
| San Diego County [CA] | 2,352 | 425 | 758 | 314 |
| Clark County [NV] | 2,331 | 545 | 444 | 176 |
| King County [WA] | 2,316 | 417 | 777 | 178 |
| Middlesex County [MA] | 2,313 | 472 | 526 | 192 |
| Bucks County [PA] | 2,248 | 490 | 771 | 327 |
| Essex County [NJ] | 2,182 | 498 | 928 | 201 |
| Monmouth County [NJ] | 2,033 | 529 | 545 | 216 |
| Harris County [TX] | 1,984 | 452 | 476 | 163 |
| Ocean County [NJ] | 1,979 | 405 | 722 | 243 |
| Orange County [CA] | 1,969 | 353 | 580 | 172 |
| Milwaukee County [WI] | 1,889 | 352 | 471 | 158 |
| Monroe County [NY] | 1,863 | 404 | 668 | 182 |
| Essex County [MA] | 1,837 | 506 | 537 | 193 |
| Santa Clara County [CA] | 1,777 | 437 | 425 | 148 |
| Suffolk County [MA] | 1,697 | 395 | 585 | 203 |
| Allegheny County [PA] | 1,682 | 257 | 365 | 115 |
| Burlington County [NJ] | 1,676 | 348 | 444 | 148 |
| Montgomery County [PA] | 1,615 | 368 | 434 | 184 |
| Providence County [RI] | 1,598 | 377 | 552 | 167 |
| Rockland County [NY] | 1,351 | 350 | 555 | 183 |
| Riverside County [CA] | 1,331 | 379 | 464 | 252 |
| Orange County [NY] | 1,287 | 405 | 401 | 137 |
| Norfolk County [MA] | 1,280 | 326 | 420 | 175 |
| Miami-Dade County [FL] | 1,268 | 325 | 505 | 192 |
| Albany County [NY] | 1,067 | 323 | 360 | 189 |
| Bronx County [NY] | 1,006 | 273 | 513 | 212 |
| Hillsborough County [FL] | 999 | 299 | 300 | 151 |
| Bristol County [MA] | 964 | 257 | 290 | 144 |
| Fairfax County [VA] | 958 | 248 | 77 | 49 |
| Alameda County [CA] | 949 | 289 | 355 | 155 |
| Onondaga County [NY] | 947 | 198 | 237 | 89 |
| Orange County [FL] | 937 | 332 | 344 | 189 |
| Arapahoe County [CO] | 921 | 271 | 176 | 110 |
| Dallas County [TX] | 892 | 295 | 288 | 148 |
| Baltimore County [MD] | 876 | 207 | 266 | 117 |
| Montgomery County [MD] | 874 | 294 | 206 | 109 |
| Bexar County [TX] | 865 | 238 | 303 | 110 |
| New Castle County [DE] | 845 | 233 | 196 | 100 |
| Camden County [NJ] | 815 | 226 | 281 | 127 |
| San Francisco County [CA] | 749 | 254 | 237 | 113 |
| Mecklenburg County [NC] | 738 | 283 | 176 | 89 |
| Lee County [FL] | 720 | 239 | 248 | 131 |
| Salt Lake County [UT] | 711 | 387 | 182 | 102 |
| Contra Costa County [CA] | 710 | 276 | 211 | 130 |
| St. Louis County [MO] | 700 | 264 | 138 | 74 |
| Cobb County [GA] | 689 | 298 | 163 | 109 |
| Baltimore city [MD] | 687 | 201 | 224 | 97 |
| Plymouth County [MA] | 671 | 208 | 182 | 121 |
| El Paso County [CO] | 668 | 228 | 196 | 115 |
| Pierce County [WA] | 666 | 325 | 198 | 142 |
| Hennepin County [MN] | 665 | 223 | 115 | 66 |
| Fulton County [GA] | 630 | 215 | 174 | 110 |
| Gwinnett County [GA] | 618 | 431 | 241 | 243 |
| Tarrant County [TX] | 604 | 223 | 184 | 159 |
| Wake County [NC] | 603 | 307 | 156 | 93 |
| Delaware County [PA] | 603 | 214 | 171 | 151 |
| Sacramento County [CA] | 591 | 229 | 160 | 74 |
| Pima County [AZ] | 553 | 230 | 129 | 79 |
| Washtenaw County [MI] | 536 | 181 | 86 | 62 |
| Collier County [FL] | 531 | 235 | 190 | 123 |
| Anne Arundel County [MD] | 522 | 171 | 101 | 58 |
| Ventura County [CA] | 514 | 202 | 82 | 51 |
| Snohomish County [WA] | 500 | 224 | 144 | 116 |
| San Mateo County [CA] | 491 | 175 | 130 | 63 |
| Franklin County [OH] | 485 | 153 | 161 | 98 |
| District of Columbia [DC] | 483 | 154 | 52 | 42 |
| Atlantic County [NJ] | 474 | 176 | 143 | 69 |
| Denver County [CO] | 467 | 165 | 27 | 25 |
| Duval County [FL] | 436 | 199 | 122 | 80 |
| Denton County [TX] | 419 | 235 | 154 | 109 |
| San Bernardino County [CA] | 418 | 195 | 136 | 94 |
| Travis County [TX] | 400 | 140 | 72 | 51 |
| Washington County [OR] | 391 | 203 | 103 | 84 |
| Loudoun County [VA] | 361 | 163 | 29 | 37 |
| Hillsborough County [NH] | 356 | 140 | 115 | 75 |
| Ramsey County [MN] | 337 | 173 | 88 | 62 |
| Marion County [IN] | 320 | 174 | 81 | 59 |
| Oklahoma County [OK] | 315 | 248 | 97 | 126 |
| Chester County [PA] | 314 | 149 | 100 | 79 |
| Dane County [WI] | 314 | 124 | 30 | 30 |
| Collin County [TX] | 301 | 126 | 38 | 43 |
| Howard County [MD] | 296 | 173 | 36 | 45 |
| Arlington County [VA] | 284 | 162 | 39 | 42 |
| Honolulu County [HI] | 281 | 107 | 102 | 61 |
| Bernalillo County [NM] | 281 | 147 | 79 | 62 |
| Lancaster County [PA] | 264 | 137 | 61 | 47 |
| Fort Bend County [TX] | 263 | 154 | 57 | 53 |
| Shelby County [TN] | 258 | 120 | 65 | 62 |
| San Joaquin County [CA] | 244 | 171 | 54 | 46 |
| DeKalb County [GA] | 244 | 133 | 34 | 38 |
| Hamilton County [OH] | 243 | 145 | 11 | 17 |
| Monterey County [CA] | 231 | 116 | 5 | 11 |
| Clark County [WA] | 222 | 135 | 75 | 76 |
| Prince George s County [MD] | 215 | 120 | 94 | 78 |
| Polk County [IA] | 210 | 103 | 93 | 63 |
| Virginia Beach city [VA] | 209 | 158 | 42 | 45 |
| Dakota County [MN] | 194 | 83 | 46 | 37 |
| Prince William County [VA] | 182 | 92 | 39 | 41 |
| Guilford County [NC] | 175 | 89 | 70 | 79 |
| Santa Barbara County [CA] | 174 | 97 | 33 | 27 |
| Sonoma County [CA] | 172 | 88 | 91 | 67 |
| Solano County [CA] | 170 | 136 | 34 | 48 |
| Hawaii County [HI] | 159 | 113 | 14 | 23 |
| Johnson County [KS] | 155 | 143 | 32 | 47 |
| Stanislaus County [CA] | 141 | 103 | 63 | 54 |
| Davidson County [TN] | 140 | 97 | 44 | 44 |
| Multnomah County [OR] | 139 | 75 | 41 | 35 |
| Anchorage Municipality [AK] | 137 | 94 | 40 | 42 |
| Jefferson County [KY] | 137 | 80 | 58 | 60 |
| Washoe County [NV] | 125 | 94 | (B) | - |
| Jefferson Parish [LA] | 124 | 78 | 27 | 42 |
| Placer County [CA] | 90 | 63 | 38 | 37 |
| Kern County [CA] | 63 | 36 | (B) | - |
| Henrico County [VA] | 62 | 42 | 13 | 18 |
| Navajo County [AZ] | 55 | 55 | 20 | 32 |
| Fresno County [CA] | 44 | 37 | 12 | 20 |
| Yolo County [CA] | 32 | 32 | 11 | 18 |
| San Juan County [NM] | 25 | 30 | (B) | - |
| Maui County [HI] | 8 | 13 | (B) | - |
| City / Metropolitan area / CBSA | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Chicago-Naperville-Elgin [IL-IN] | 182,859 | 4,608 | 90,506 | 2,812 |
| New York-Newark-Jersey City [NY] | 134,221 | 3,336 | 62,596 | 2,082 |
| Hartford-West Hartford-East Hartford [CT] | 21,807 | 1,476 | 9,618 | 959 |
| Detroit-Warren-Dearborn [MI] | 17,451 | 1,277 | 5,487 | 567 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 13,281 | 1,060 | 4,801 | 661 |
| Boston-Cambridge-Newton [MA-NH] | 8,369 | 758 | 2,484 | 422 |
| Bridgeport-Stamford-Norwalk [CT] | 8,021 | 959 | 3,435 | 558 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 7,951 | 713 | 1,886 | 324 |
| Los Angeles-Long Beach-Anaheim [CA] | 7,359 | 667 | 2,237 | 337 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 6,953 | 834 | 2,308 | 458 |
| New Haven-Milford [CT] | 5,729 | 922 | 1,999 | 423 |
| Springfield [MA] | 5,708 | 734 | 2,086 | 443 |
| Cleveland-Elyria [OH] | 5,395 | 493 | 1,643 | 248 |
| Tampa-St. Petersburg-Clearwater [FL] | 4,832 | 725 | 2,151 | 507 |
| Phoenix-Mesa-Scottsdale [AZ] | 4,776 | 593 | 1,183 | 298 |
| Trenton [NJ] | 4,534 | 758 | 2,112 | 466 |
| Worcester [MA-CT] | 4,196 | 576 | 1,515 | 370 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 3,968 | 545 | 580 | 169 |
| Denver-Aurora-Lakewood [CO] | 3,673 | 495 | 852 | 280 |
| Seattle-Tacoma-Bellevue [WA] | 3,482 | 499 | 1,119 | 245 |
| Atlanta-Sandy Springs-Roswell [GA] | 3,291 | 731 | 1,043 | 356 |
| Providence-Warwick [RI-MA] | 3,113 | 541 | 931 | 243 |
| Allentown-Bethlehem-Easton [PA-NJ] | 3,010 | 747 | 944 | 314 |
| San Francisco-Oakland-Hayward [CA] | 2,987 | 526 | 933 | 252 |
| Baltimore-Columbia-Towson [MD] | 2,798 | 480 | 800 | 231 |
| Pittsburgh [PA] | 2,669 | 354 | 488 | 138 |
| Houston-The Woodlands-Sugar Land [TX] | 2,565 | 487 | 579 | 178 |
| Milwaukee-Waukesha-West Allis [WI] | 2,493 | 370 | 578 | 196 |
| San Diego-Carlsbad [CA] | 2,352 | 425 | 758 | 314 |
| Dallas-Fort Worth-Arlington [TX] | 2,338 | 440 | 664 | 263 |
| Las Vegas-Henderson-Paradise [NV] | 2,331 | 545 | 444 | 176 |
| New York-Newark-Jersey City [NY-NJ-PA] | 2,331 | 658 | 1,180 | 506 |
| Albany-Schenectady-Troy [NY] | 2,110 | 363 | 659 | 193 |
| Rochester [NY] | 2,087 | 418 | 689 | 183 |
| Orlando-Kissimmee-Sanford [FL] | 2,063 | 482 | 633 | 282 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 1,891 | 369 | 398 | 124 |
| San Jose-Sunnyvale-Santa Clara [CA] | 1,797 | 438 | 442 | 151 |
| Riverside-San Bernardino-Ontario [CA] | 1,749 | 420 | 600 | 276 |
| Charlotte-Concord-Gastonia [NC-SC] | 1,357 | 430 | 307 | 132 |
| San Antonio-New Braunfels [TX] | 1,348 | 328 | 355 | 116 |
| Jacksonville [FL] | 1,278 | 394 | 492 | 237 |
| St. Louis [MO-IL] | 1,237 | 297 | 322 | 124 |
| Syracuse [NY] | 1,182 | 216 | 312 | 107 |
| Portland-Vancouver-Hillsboro [OR-WA] | 913 | 293 | 251 | 140 |
| Deltona-Daytona Beach-Ormond Beach [FL] | 908 | 317 | 315 | 140 |
| Austin-Round Rock [TX] | 825 | 278 | 213 | 169 |
| Columbus [OH] | 804 | 201 | 321 | 155 |
| Sacramento-Roseville-Arden-Arcade [CA] | 795 | 256 | 224 | 87 |
| Grand Rapids-Wyoming [MI] | 794 | 223 | 186 | 100 |
| Cape Coral-Fort Myers [FL] | 720 | 239 | 248 | 131 |
| Salt Lake City [UT] | 711 | 387 | 182 | 102 |
| Colorado Springs [CO] | 704 | 234 | 196 | 115 |
| Raleigh [NC] | 684 | 331 | 156 | 93 |
| Cincinnati [OH-KY-IN] | 658 | 288 | 99 | 68 |
| Tucson [AZ] | 553 | 230 | 129 | 79 |
| Ann Arbor [MI] | 536 | 181 | 86 | 62 |
| Omaha-Council Bluffs [NE-IA] | 533 | 188 | 73 | 38 |
| Naples-Immokalee-Marco Island [FL] | 531 | 235 | 190 | 123 |
| Akron [OH] | 516 | 186 | 59 | 43 |
| Oxnard-Thousand Oaks-Ventura [CA] | 514 | 202 | 82 | 51 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 478 | 196 | 86 | 53 |
| Richmond [VA] | 477 | 296 | 113 | 121 |
| Atlantic City-Hammonton [NJ] | 474 | 176 | 143 | 69 |
| Oklahoma City [OK] | 472 | 304 | 116 | 129 |
| Kansas City [MO-KS] | 458 | 182 | 111 | 73 |
| Madison [WI] | 456 | 173 | 97 | 72 |
| Portland-South Portland [ME] | 437 | 165 | 122 | 87 |
| Indianapolis-Carmel-Anderson [IN] | 427 | 178 | 109 | 65 |
| Lansing-East Lansing [MI] | 405 | 159 | 67 | 55 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 370 | 157 | 124 | 83 |
| Manchester-Nashua [NH] | 356 | 140 | 115 | 75 |
| Harrisburg-Carlisle [PA] | 331 | 111 | 61 | 42 |
| Albuquerque [NM] | 308 | 153 | 79 | 62 |
| Durham-Chapel Hill [NC] | 307 | 153 | 24 | 29 |
| Urban Honolulu [HI] | 281 | 107 | 102 | 61 |
| Memphis [TN-MS-AR] | 274 | 125 | 65 | 62 |
| Lancaster [PA] | 264 | 137 | 61 | 47 |
| New Orleans-Metairie [LA] | 257 | 112 | 56 | 49 |
| Stockton-Lodi [CA] | 244 | 171 | 54 | 46 |
| Spokane-Spokane Valley [WA] | 233 | 130 | 35 | 38 |
| Salinas [CA] | 231 | 116 | 5 | 11 |
| Baton Rouge [LA] | 210 | 150 | (B) | - |
| Des Moines-West Des Moines [IA] | 210 | 103 | 93 | 63 |
| Anchorage [AK] | 208 | 118 | 91 | 76 |
| Greensboro-High Point [NC] | 184 | 91 | 77 | 75 |
| Santa Maria-Santa Barbara [CA] | 174 | 97 | 33 | 27 |
| Santa Rosa [CA] | 172 | 88 | 91 | 67 |
| Dayton [OH] | 171 | 81 | 38 | 37 |
| Vallejo-Fairfield [CA] | 170 | 136 | 34 | 48 |
| Louisville Jefferson County [KY] | 164 | 83 | 58 | 60 |
| Hilo [HI] | 159 | 113 | 14 | 23 |
| Modesto [CA] | 141 | 103 | 63 | 54 |
| Reno [NV] | 125 | 94 | (B) | - |
| Tulsa [OK] | 97 | 70 | 41 | 36 |
| Bakersfield [CA] | 63 | 36 | (B) | - |
| Lafayette [LA] | 61 | 54 | (B) | - |
| Show Low [AZ] | 55 | 55 | 20 | 32 |
| Fresno [CA] | 44 | 37 | 12 | 20 |
| Farmington [NM] | 25 | 30 | (B) | - |
| Kahului-Wailuku-Lahaina [HI] | 8 | 13 | (B) | - |