| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 643,337 | 9,342 | 132,631 | 3,943 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| California | 149,301 | 4,735 | 29,614 | 1,830 |
| New Jersey | 63,342 | 2,612 | 13,820 | 1,257 |
| Texas | 59,602 | 2,942 | 12,165 | 1,266 |
| New York | 58,591 | 2,661 | 14,864 | 1,077 |
| Illinois | 37,982 | 2,000 | 9,678 | 928 |
| Virginia | 25,121 | 1,774 | 4,391 | 705 |
| Georgia | 21,744 | 2,003 | 5,083 | 866 |
| Pennsylvania | 21,108 | 1,658 | 4,533 | 641 |
| Florida | 19,848 | 1,889 | 4,457 | 713 |
| Massachusetts | 18,845 | 1,461 | 3,370 | 606 |
| Michigan | 16,340 | 1,393 | 3,378 | 501 |
| Maryland | 16,192 | 1,611 | 2,558 | 537 |
| Ohio | 16,159 | 1,475 | 2,606 | 537 |
| Washington | 15,528 | 1,360 | 2,784 | 431 |
| North Carolina | 13,048 | 1,270 | 2,174 | 509 |
| Connecticut | 11,430 | 1,173 | 2,561 | 640 |
| Arizona | 8,474 | 1,145 | 978 | 293 |
| Indiana | 7,225 | 1,061 | 1,762 | 485 |
| Minnesota | 6,998 | 918 | 1,109 | 288 |
| Tennessee | 5,122 | 714 | 1,233 | 371 |
| Wisconsin | 4,831 | 622 | 907 | 261 |
| Oregon | 4,783 | 700 | 701 | 270 |
| Colorado | 4,171 | 563 | 623 | 209 |
| Missouri | 3,999 | 645 | 402 | 130 |
| Alabama | 3,236 | 593 | 885 | 299 |
| Kansas | 2,919 | 534 | 275 | 128 |
| Iowa | 2,628 | 485 | 924 | 238 |
| Nevada | 2,435 | 573 | 894 | 390 |
| Kentucky | 2,429 | 494 | 445 | 176 |
| South Carolina | 2,113 | 388 | 450 | 176 |
| Oklahoma | 1,899 | 413 | 273 | 117 |
| Delaware | 1,895 | 545 | 416 | 213 |
| Louisiana | 1,860 | 478 | 327 | 166 |
| New Hampshire | 1,618 | 412 | 278 | 164 |
| Arkansas | 1,413 | 523 | 433 | 225 |
| District of Columbia | 1,245 | 338 | 148 | 97 |
| Nebraska | 1,238 | 347 | 230 | 165 |
| Utah | 1,127 | 307 | 193 | 111 |
| New Mexico | 1,038 | 324 | 148 | 108 |
| Mississippi | 978 | 253 | 134 | 102 |
| Rhode Island | 879 | 252 | 58 | 46 |
| Maine | 496 | 197 | 12 | 18 |
| Hawaii | 410 | 159 | 171 | 117 |
| West Virginia | 366 | 133 | 49 | 46 |
| Idaho | 296 | 151 | 31 | 21 |
| Alaska | 290 | 190 | (B) | - |
| North Dakota | 262 | 149 | 44 | 47 |
| South Dakota | 253 | 137 | 36 | 42 |
| Vermont | 123 | 79 | 4 | 8 |
| Puerto Rico | 111 | 86 | 68 | 68 |
| Montana | 78 | 76 | 22 | 39 |
| Wyoming | 29 | 53 | (B) | - |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Santa Clara County [CA] | 31,006 | 2,099 | 3,750 | 590 |
| Alameda County [CA] | 26,535 | 1,849 | 4,590 | 691 |
| Los Angeles County [CA] | 21,827 | 1,664 | 5,356 | 960 |
| Middlesex County [NJ] | 20,622 | 1,359 | 4,219 | 723 |
| Cook County [IL] | 20,180 | 1,398 | 6,224 | 882 |
| Queens County [NY] | 19,441 | 1,706 | 7,016 | 797 |
| Harris County [TX] | 15,148 | 1,397 | 4,035 | 756 |
| Hudson County [NJ] | 13,378 | 1,025 | 3,947 | 605 |
| Sacramento County [CA] | 13,006 | 1,277 | 3,700 | 650 |
| King County [WA] | 12,043 | 1,121 | 1,917 | 325 |
| Fairfax County [VA] | 11,776 | 1,349 | 1,982 | 508 |
| Orange County [CA] | 10,610 | 1,251 | 2,015 | 464 |
| Middlesex County [MA] | 9,947 | 937 | 1,787 | 455 |
| Nassau County [NY] | 9,483 | 1,026 | 2,258 | 372 |
| Dallas County [TX] | 8,458 | 905 | 1,368 | 326 |
| Fort Bend County [TX] | 7,840 | 1,487 | 1,424 | 526 |
| New York County [NY] | 7,643 | 977 | 513 | 240 |
| Montgomery County [MD] | 7,551 | 974 | 928 | 274 |
| Collin County [TX] | 7,234 | 1,002 | 1,647 | 647 |
| Maricopa County [AZ] | 7,121 | 1,009 | 889 | 279 |
| DuPage County [IL] | 6,848 | 874 | 1,419 | 366 |
| Oakland County [MI] | 6,693 | 834 | 1,230 | 288 |
| San Diego County [CA] | 6,425 | 1,019 | 1,610 | 562 |
| Fulton County [GA] | 6,260 | 898 | 835 | 310 |
| San Mateo County [CA] | 6,216 | 884 | 1,147 | 334 |
| Bergen County [NJ] | 5,889 | 781 | 1,049 | 248 |
| Contra Costa County [CA] | 5,650 | 944 | 1,136 | 350 |
| Loudoun County [VA] | 5,090 | 768 | 873 | 315 |
| Somerset County [NJ] | 4,684 | 748 | 692 | 242 |
| Wake County [NC] | 4,595 | 895 | 714 | 325 |
| Gwinnett County [GA] | 4,576 | 1,022 | 1,029 | 359 |
| Mecklenburg County [NC] | 4,502 | 816 | 1,021 | 391 |
| Morris County [NJ] | 4,475 | 683 | 954 | 380 |
| Montgomery County [PA] | 4,187 | 777 | 1,060 | 367 |
| Travis County [TX] | 4,135 | 705 | 704 | 281 |
| Fairfield County [CT] | 4,075 | 650 | 743 | 302 |
| Hennepin County [MN] | 4,033 | 600 | 742 | 268 |
| Hartford County [CT] | 3,944 | 702 | 959 | 411 |
| Stanislaus County [CA] | 3,647 | 792 | 950 | 285 |
| Franklin County [OH] | 3,617 | 749 | 834 | 384 |
| San Francisco County [CA] | 3,545 | 706 | 471 | 237 |
| Tarrant County [TX] | 3,543 | 616 | 761 | 269 |
| Suffolk County [NY] | 3,532 | 577 | 1,162 | 378 |
| Mercer County [NJ] | 3,433 | 692 | 506 | 277 |
| Cuyahoga County [OH] | 3,298 | 554 | 435 | 172 |
| Riverside County [CA] | 3,243 | 804 | 759 | 242 |
| Broward County [FL] | 3,105 | 685 | 800 | 334 |
| Allegheny County [PA] | 3,035 | 509 | 468 | 139 |
| Wayne County [MI] | 2,943 | 538 | 792 | 222 |
| Kings County [NY] | 2,925 | 520 | 933 | 278 |
| Philadelphia County [PA] | 2,897 | 565 | 588 | 261 |
| Westchester County [NY] | 2,841 | 487 | 485 | 221 |
| Orange County [FL] | 2,686 | 878 | 553 | 250 |
| DeKalb County [GA] | 2,653 | 599 | 762 | 303 |
| Cobb County [GA] | 2,607 | 630 | 692 | 285 |
| Bexar County [TX] | 2,540 | 537 | 465 | 228 |
| Worcester County [MA] | 2,521 | 506 | 546 | 209 |
| Lake County [IL] | 2,515 | 466 | 274 | 140 |
| Washington County [OR] | 2,475 | 477 | 275 | 166 |
| Hillsborough County [FL] | 2,400 | 602 | 313 | 143 |
| Denton County [TX] | 2,314 | 506 | 485 | 206 |
| San Joaquin County [CA] | 2,287 | 627 | 475 | 185 |
| Norfolk County [MA] | 2,264 | 584 | 322 | 158 |
| San Bernardino County [CA] | 2,233 | 649 | 557 | 335 |
| Ventura County [CA] | 2,221 | 557 | 420 | 193 |
| Prince George s County [MD] | 2,187 | 613 | 295 | 171 |
| Will County [IL] | 2,184 | 489 | 400 | 163 |
| Johnson County [KS] | 2,129 | 436 | 180 | 105 |
| Henrico County [VA] | 2,127 | 466 | 429 | 279 |
| Hamilton County [OH] | 2,094 | 356 | 386 | 166 |
| Howard County [MD] | 2,054 | 456 | 361 | 183 |
| New Haven County [CT] | 2,049 | 465 | 401 | 199 |
| Clark County [NV] | 2,025 | 490 | 690 | 312 |
| Bucks County [PA] | 1,977 | 519 | 435 | 201 |
| Monroe County [NY] | 1,970 | 624 | 451 | 214 |
| Suffolk County [MA] | 1,967 | 473 | 314 | 158 |
| Solano County [CA] | 1,961 | 485 | 507 | 164 |
| Monmouth County [NJ] | 1,945 | 490 | 296 | 154 |
| Essex County [NJ] | 1,860 | 398 | 345 | 160 |
| Chester County [PA] | 1,847 | 495 | 284 | 208 |
| Miami-Dade County [FL] | 1,813 | 596 | 374 | 205 |
| Marion County [IN] | 1,813 | 524 | 439 | 224 |
| Erie County [NY] | 1,784 | 479 | 217 | 116 |
| Milwaukee County [WI] | 1,708 | 375 | 355 | 172 |
| Washtenaw County [MI] | 1,697 | 457 | 306 | 161 |
| St. Louis County [MO] | 1,696 | 376 | 105 | 62 |
| Baltimore County [MD] | 1,644 | 443 | 457 | 274 |
| Rockland County [NY] | 1,570 | 460 | 283 | 150 |
| Delaware County [PA] | 1,562 | 466 | 467 | 217 |
| Camden County [NJ] | 1,477 | 404 | 421 | 180 |
| Yolo County [CA] | 1,463 | 309 | 328 | 178 |
| Snohomish County [WA] | 1,436 | 441 | 317 | 155 |
| New Castle County [DE] | 1,414 | 390 | 218 | 127 |
| Richmond County [NY] | 1,411 | 485 | 294 | 133 |
| Macomb County [MI] | 1,409 | 390 | 474 | 188 |
| Fresno County [CA] | 1,290 | 462 | 458 | 238 |
| Duval County [FL] | 1,267 | 585 | 179 | 131 |
| Multnomah County [OR] | 1,260 | 410 | 150 | 92 |
| Palm Beach County [FL] | 1,258 | 323 | 244 | 135 |
| District of Columbia [DC] | 1,245 | 338 | 148 | 97 |
| Union County [NJ] | 1,207 | 387 | 150 | 85 |
| Bronx County [NY] | 1,197 | 437 | 291 | 209 |
| Arapahoe County [CO] | 1,156 | 321 | 101 | 64 |
| Jefferson County [KY] | 1,120 | 342 | 225 | 121 |
| Dane County [WI] | 1,088 | 321 | 248 | 150 |
| Prince William County [VA] | 1,047 | 412 | 141 | 86 |
| Burlington County [NJ] | 1,031 | 314 | 183 | 98 |
| Davidson County [TN] | 971 | 325 | 306 | 200 |
| Albany County [NY] | 952 | 335 | 168 | 112 |
| Shelby County [TN] | 944 | 326 | 130 | 92 |
| Arlington County [VA] | 875 | 309 | 63 | 53 |
| Passaic County [NJ] | 874 | 260 | 244 | 141 |
| Pima County [AZ] | 836 | 299 | 31 | 39 |
| Kane County [IL] | 830 | 385 | 272 | 231 |
| Hillsborough County [NH] | 827 | 239 | 139 | 85 |
| Ramsey County [MN] | 824 | 367 | 41 | 33 |
| Placer County [CA] | 806 | 275 | 280 | 177 |
| Atlantic County [NJ] | 800 | 372 | 307 | 181 |
| Essex County [MA] | 793 | 307 | 26 | 32 |
| Providence County [RI] | 793 | 243 | 53 | 47 |
| Onondaga County [NY] | 747 | 217 | 194 | 110 |
| Oklahoma County [OK] | 735 | 294 | 68 | 48 |
| Pinellas County [FL] | 732 | 262 | 172 | 115 |
| Salt Lake County [UT] | 730 | 216 | 62 | 54 |
| Anne Arundel County [MD] | 695 | 298 | 210 | 143 |
| Baltimore city [MD] | 679 | 366 | 89 | 94 |
| Denver County [CO] | 669 | 256 | 51 | 74 |
| Ocean County [NJ] | 646 | 291 | 160 | 83 |
| Polk County [IA] | 641 | 263 | 193 | 113 |
| Santa Barbara County [CA] | 613 | 260 | 38 | 41 |
| Pierce County [WA] | 613 | 253 | 158 | 111 |
| Kern County [CA] | 610 | 263 | 58 | 50 |
| Dakota County [MN] | 590 | 174 | 112 | 96 |
| Guilford County [NC] | 567 | 353 | (B) | - |
| Sonoma County [CA] | 527 | 210 | 139 | 115 |
| Bristol County [MA] | 509 | 225 | 128 | 83 |
| Monterey County [CA] | 478 | 188 | 149 | 101 |
| Orange County [NY] | 459 | 197 | 114 | 106 |
| Bernalillo County [NM] | 433 | 227 | 23 | 27 |
| Honolulu County [HI] | 329 | 135 | 112 | 89 |
| Jefferson Parish [LA] | 322 | 218 | 42 | 44 |
| Hampden County [MA] | 304 | 143 | 44 | 52 |
| Clark County [WA] | 300 | 185 | 96 | 73 |
| Lancaster County [PA] | 287 | 157 | 75 | 102 |
| Washoe County [NV] | 277 | 229 | 159 | 207 |
| El Paso County [CO] | 212 | 156 | 95 | 68 |
| Virginia Beach city [VA] | 209 | 130 | 76 | 64 |
| Lee County [FL] | 151 | 134 | 55 | 69 |
| Plymouth County [MA] | 71 | 93 | 30 | 42 |
| Collier County [FL] | 68 | 60 | (B) | - |
| Anchorage Municipality [AK] | 51 | 45 | (B) | - |
| Navajo County [AZ] | 38 | 49 | 7 | 12 |
| Maui County [HI] | 38 | 59 | 16 | 28 |
| San Juan County [NM] | 5 | 8 | (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] | 107,026 | 3,746 | 25,784 | 1,530 |
| San Francisco-Oakland-Hayward [CA] | 42,523 | 2,437 | 7,383 | 932 |
| Chicago-Naperville-Elgin [IL-IN] | 33,820 | 1,833 | 8,885 | 925 |
| Los Angeles-Long Beach-Anaheim [CA] | 32,437 | 2,179 | 7,371 | 992 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 31,718 | 1,820 | 4,775 | 712 |
| San Jose-Sunnyvale-Santa Clara [CA] | 31,025 | 2,100 | 3,750 | 590 |
| Houston-The Woodlands-Sugar Land [TX] | 24,569 | 2,208 | 5,627 | 880 |
| Dallas-Fort Worth-Arlington [TX] | 21,683 | 1,610 | 4,321 | 735 |
| Atlanta-Sandy Springs-Roswell [GA] | 18,589 | 1,805 | 3,927 | 711 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 16,763 | 1,438 | 3,741 | 581 |
| Sacramento-Roseville-Arden-Arcade [CA] | 15,665 | 1,401 | 4,338 | 723 |
| Boston-Cambridge-Newton [MA-NH] | 15,584 | 1,455 | 2,597 | 519 |
| Seattle-Tacoma-Bellevue [WA] | 14,092 | 1,246 | 2,392 | 400 |
| Detroit-Warren-Dearborn [MI] | 11,078 | 1,117 | 2,496 | 416 |
| Phoenix-Mesa-Scottsdale [AZ] | 7,440 | 1,007 | 932 | 288 |
| San Diego-Carlsbad [CA] | 6,425 | 1,019 | 1,610 | 562 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 6,407 | 891 | 1,025 | 284 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 6,176 | 964 | 1,418 | 404 |
| Austin-Round Rock [TX] | 5,939 | 826 | 884 | 303 |
| Baltimore-Columbia-Towson [MD] | 5,523 | 827 | 1,175 | 379 |
| Riverside-San Bernardino-Ontario [CA] | 5,476 | 981 | 1,316 | 405 |
| Charlotte-Concord-Gastonia [NC-SC] | 5,330 | 948 | 1,143 | 396 |
| Raleigh [NC] | 4,689 | 903 | 714 | 325 |
| Hartford-West Hartford-East Hartford [CT] | 4,641 | 761 | 1,075 | 429 |
| Columbus [OH] | 4,559 | 859 | 984 | 402 |
| Portland-Vancouver-Hillsboro [OR-WA] | 4,344 | 719 | 579 | 225 |
| Orlando-Kissimmee-Sanford [FL] | 4,236 | 937 | 925 | 327 |
| Bridgeport-Stamford-Norwalk [CT] | 4,075 | 650 | 743 | 302 |
| Indianapolis-Carmel-Anderson [IN] | 3,920 | 858 | 858 | 391 |
| Cincinnati [OH-KY-IN] | 3,872 | 595 | 588 | 208 |
| Cleveland-Elyria [OH] | 3,792 | 563 | 500 | 189 |
| Modesto [CA] | 3,647 | 792 | 950 | 285 |
| Pittsburgh [PA] | 3,556 | 541 | 679 | 181 |
| Trenton [NJ] | 3,433 | 692 | 506 | 277 |
| Tampa-St. Petersburg-Clearwater [FL] | 3,398 | 673 | 512 | 201 |
| Denver-Aurora-Lakewood [CO] | 3,103 | 516 | 450 | 194 |
| St. Louis [MO-IL] | 3,044 | 579 | 200 | 99 |
| Milwaukee-Waukesha-West Allis [WI] | 2,801 | 426 | 479 | 188 |
| San Antonio-New Braunfels [TX] | 2,577 | 526 | 465 | 228 |
| Richmond [VA] | 2,570 | 476 | 502 | 278 |
| Worcester [MA-CT] | 2,548 | 503 | 549 | 209 |
| Kansas City [MO-KS] | 2,465 | 494 | 251 | 125 |
| Stockton-Lodi [CA] | 2,287 | 627 | 475 | 185 |
| Oxnard-Thousand Oaks-Ventura [CA] | 2,221 | 557 | 420 | 193 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 2,158 | 502 | 610 | 269 |
| Rochester [NY] | 2,147 | 641 | 451 | 214 |
| New Haven-Milford [CT] | 2,049 | 465 | 401 | 199 |
| Las Vegas-Henderson-Paradise [NV] | 2,025 | 490 | 690 | 312 |
| Vallejo-Fairfield [CA] | 1,961 | 485 | 507 | 164 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 1,861 | 492 | 217 | 116 |
| Allentown-Bethlehem-Easton [PA-NJ] | 1,730 | 422 | 289 | 144 |
| Ann Arbor [MI] | 1,697 | 457 | 306 | 161 |
| Jacksonville [FL] | 1,491 | 624 | 220 | 141 |
| Providence-Warwick [RI-MA] | 1,388 | 334 | 186 | 91 |
| Albany-Schenectady-Troy [NY] | 1,372 | 433 | 193 | 116 |
| Fresno [CA] | 1,290 | 462 | 458 | 238 |
| Dayton [OH] | 1,289 | 344 | 154 | 90 |
| Louisville Jefferson County [KY] | 1,224 | 371 | 239 | 122 |
| Akron [OH] | 1,184 | 449 | 132 | 73 |
| Harrisburg-Carlisle [PA] | 1,118 | 373 | 117 | 74 |
| Madison [WI] | 1,104 | 318 | 248 | 150 |
| Memphis [TN-MS-AR] | 1,030 | 349 | 130 | 92 |
| Deltona-Daytona Beach-Ormond Beach [FL] | 1,024 | 443 | 437 | 339 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 1,016 | 358 | 234 | 139 |
| Grand Rapids-Wyoming [MI] | 977 | 346 | 176 | 99 |
| Omaha-Council Bluffs [NE-IA] | 911 | 305 | 183 | 151 |
| Oklahoma City [OK] | 849 | 308 | 119 | 77 |
| Tucson [AZ] | 836 | 299 | 31 | 39 |
| Manchester-Nashua [NH] | 827 | 239 | 139 | 85 |
| Atlantic City-Hammonton [NJ] | 800 | 372 | 307 | 181 |
| Syracuse [NY] | 789 | 215 | 194 | 110 |
| Des Moines-West Des Moines [IA] | 738 | 279 | 193 | 113 |
| Salt Lake City [UT] | 730 | 216 | 62 | 54 |
| Durham-Chapel Hill [NC] | 698 | 234 | 41 | 51 |
| Lansing-East Lansing [MI] | 685 | 192 | 90 | 59 |
| New Orleans-Metairie [LA] | 679 | 245 | 55 | 46 |
| Springfield [MA] | 641 | 245 | 131 | 101 |
| Santa Maria-Santa Barbara [CA] | 613 | 260 | 38 | 41 |
| Greensboro-High Point [NC] | 611 | 358 | (B) | - |
| Bakersfield [CA] | 610 | 263 | 58 | 50 |
| Tulsa [OK] | 596 | 192 | 92 | 52 |
| Albuquerque [NM] | 578 | 286 | 80 | 92 |
| Baton Rouge [LA] | 533 | 256 | 191 | 127 |
| Santa Rosa [CA] | 527 | 210 | 139 | 115 |
| Salinas [CA] | 478 | 188 | 149 | 101 |
| New York-Newark-Jersey City [NY-NJ-PA] | 443 | 186 | 116 | 103 |
| Lafayette [LA] | 370 | 247 | 15 | 20 |
| Urban Honolulu [HI] | 329 | 135 | 112 | 89 |
| Spokane-Spokane Valley [WA] | 293 | 266 | 10 | 17 |
| Lancaster [PA] | 287 | 157 | 75 | 102 |
| Reno [NV] | 277 | 229 | 159 | 207 |
| Portland-South Portland [ME] | 254 | 158 | (B) | - |
| Colorado Springs [CO] | 212 | 156 | 95 | 68 |
| Cape Coral-Fort Myers [FL] | 151 | 134 | 55 | 69 |
| Naples-Immokalee-Marco Island [FL] | 68 | 60 | (B) | - |
| Anchorage [AK] | 51 | 45 | (B) | - |
| Kahului-Wailuku-Lahaina [HI] | 38 | 59 | 16 | 28 |
| Show Low [AZ] | 38 | 49 | 7 | 12 |
| Farmington [NM] | 5 | 8 | (B) | - |