| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 421,513 | 6,555 | 160,786 | 3,972 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| California | 121,220 | 3,715 | 43,369 | 2,009 |
| Hawaii | 112,487 | 3,668 | 55,418 | 2,643 |
| Washington | 28,213 | 1,644 | 9,225 | 866 |
| Texas | 16,789 | 1,440 | 4,518 | 720 |
| Utah | 13,372 | 944 | 2,838 | 438 |
| New York | 11,221 | 1,237 | 4,935 | 710 |
| Nevada | 10,160 | 1,368 | 3,493 | 930 |
| Oregon | 8,384 | 913 | 2,406 | 471 |
| Florida | 7,444 | 1,008 | 2,713 | 596 |
| Arizona | 7,039 | 860 | 1,902 | 414 |
| Alaska | 6,542 | 743 | 2,065 | 431 |
| Illinois | 5,640 | 738 | 1,515 | 298 |
| Virginia | 5,419 | 787 | 1,505 | 346 |
| New Jersey | 4,952 | 711 | 1,916 | 443 |
| Pennsylvania | 4,887 | 802 | 2,222 | 488 |
| Georgia | 4,751 | 907 | 1,626 | 461 |
| Arkansas | 4,571 | 484 | 2,840 | 385 |
| North Carolina | 4,548 | 746 | 1,450 | 366 |
| Maryland | 4,376 | 806 | 1,234 | 354 |
| Colorado | 3,968 | 614 | 1,498 | 311 |
| Missouri | 3,898 | 545 | 1,320 | 351 |
| Oklahoma | 3,467 | 486 | 1,229 | 324 |
| Michigan | 2,593 | 339 | 816 | 222 |
| Ohio | 2,427 | 484 | 1,002 | 235 |
| Massachusetts | 2,022 | 456 | 552 | 178 |
| Minnesota | 1,843 | 327 | 714 | 185 |
| Tennessee | 1,626 | 371 | 539 | 225 |
| Indiana | 1,602 | 317 | 507 | 158 |
| Kansas | 1,341 | 326 | 432 | 166 |
| Alabama | 1,308 | 435 | 563 | 353 |
| Louisiana | 1,289 | 348 | 373 | 222 |
| Iowa | 1,244 | 392 | 511 | 183 |
| New Hampshire | 1,222 | 379 | 719 | 276 |
| Wisconsin | 1,083 | 239 | 439 | 125 |
| South Carolina | 1,069 | 368 | 326 | 148 |
| Kentucky | 1,025 | 232 | 193 | 100 |
| Idaho | 979 | 247 | 126 | 72 |
| Connecticut | 957 | 285 | 383 | 151 |
| Nebraska | 949 | 299 | 231 | 140 |
| New Mexico | 645 | 239 | 189 | 87 |
| Mississippi | 579 | 427 | 106 | 84 |
| District of Columbia | 462 | 209 | 122 | 135 |
| Wyoming | 376 | 183 | 150 | 121 |
| Montana | 343 | 130 | 51 | 45 |
| Rhode Island | 216 | 111 | 59 | 53 |
| West Virginia | 214 | 107 | 117 | 96 |
| South Dakota | 198 | 98 | 131 | 84 |
| North Dakota | 172 | 123 | 115 | 103 |
| Maine | 168 | 76 | 49 | 37 |
| Delaware | 156 | 86 | 24 | 28 |
| Vermont | 57 | 37 | 10 | 16 |
| Puerto Rico | 18 | 21 | (B) | - |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Honolulu County [HI] | 76,391 | 2,794 | 41,244 | 2,351 |
| Los Angeles County [CA] | 28,397 | 1,766 | 9,472 | 882 |
| Maui County [HI] | 14,970 | 1,487 | 7,169 | 1,045 |
| Hawaii County [HI] | 14,946 | 1,446 | 4,435 | 641 |
| King County [WA] | 13,522 | 1,030 | 4,723 | 665 |
| San Diego County [CA] | 9,809 | 837 | 3,816 | 564 |
| Salt Lake County [UT] | 9,204 | 663 | 2,118 | 364 |
| Orange County [CA] | 9,130 | 1,009 | 2,578 | 416 |
| Clark County [NV] | 8,732 | 1,314 | 3,200 | 940 |
| San Bernardino County [CA] | 8,401 | 1,071 | 3,266 | 556 |
| Santa Clara County [CA] | 8,320 | 869 | 3,217 | 490 |
| Alameda County [CA] | 7,568 | 882 | 2,558 | 418 |
| Sacramento County [CA] | 6,822 | 805 | 2,591 | 438 |
| San Mateo County [CA] | 6,191 | 866 | 2,215 | 410 |
| Pierce County [WA] | 5,619 | 659 | 1,326 | 350 |
| San Francisco County [CA] | 4,957 | 788 | 1,513 | 465 |
| Riverside County [CA] | 4,687 | 746 | 2,094 | 528 |
| Anchorage Municipality [AK] | 4,610 | 651 | 1,379 | 332 |
| Maricopa County [AZ] | 4,563 | 634 | 1,384 | 333 |
| Queens County [NY] | 4,534 | 869 | 2,207 | 509 |
| Contra Costa County [CA] | 4,302 | 691 | 1,655 | 486 |
| San Joaquin County [CA] | 3,909 | 693 | 1,644 | 377 |
| Multnomah County [OR] | 3,105 | 434 | 1,114 | 388 |
| Cook County [IL] | 3,071 | 581 | 860 | 247 |
| Harris County [TX] | 2,935 | 709 | 708 | 252 |
| Snohomish County [WA] | 2,743 | 548 | 1,189 | 326 |
| Kern County [CA] | 2,504 | 480 | 1,287 | 339 |
| Tarrant County [TX] | 2,204 | 443 | 548 | 216 |
| Solano County [CA] | 1,951 | 389 | 500 | 122 |
| Philadelphia County [PA] | 1,881 | 587 | 1,120 | 387 |
| Montgomery County [MD] | 1,872 | 466 | 602 | 253 |
| Fairfax County [VA] | 1,833 | 463 | 547 | 217 |
| Monterey County [CA] | 1,548 | 327 | 579 | 173 |
| Washington County [OR] | 1,405 | 417 | 336 | 209 |
| Fresno County [CA] | 1,287 | 326 | 440 | 143 |
| Clark County [WA] | 1,282 | 384 | 425 | 167 |
| Sonoma County [CA] | 1,172 | 270 | 304 | 146 |
| Arapahoe County [CO] | 1,147 | 418 | 513 | 215 |
| Washoe County [NV] | 1,142 | 289 | 253 | 138 |
| Pima County [AZ] | 1,133 | 410 | 187 | 116 |
| Fort Bend County [TX] | 1,117 | 470 | 570 | 319 |
| Collin County [TX] | 1,105 | 359 | 279 | 137 |
| Mecklenburg County [NC] | 1,085 | 454 | 351 | 189 |
| Gwinnett County [GA] | 1,078 | 615 | 535 | 395 |
| Prince George s County [MD] | 1,004 | 399 | 317 | 156 |
| Nassau County [NY] | 1,000 | 413 | 336 | 158 |
| Dallas County [TX] | 969 | 303 | 222 | 113 |
| Stanislaus County [CA] | 967 | 345 | 250 | 155 |
| Ventura County [CA] | 946 | 258 | 373 | 121 |
| Bexar County [TX] | 935 | 301 | 259 | 131 |
| Santa Barbara County [CA] | 879 | 261 | 262 | 115 |
| Kings County [NY] | 840 | 208 | 416 | 130 |
| Hillsborough County [FL] | 828 | 303 | 265 | 199 |
| Fulton County [GA] | 825 | 387 | 400 | 257 |
| El Paso County [CO] | 802 | 217 | 341 | 139 |
| Middlesex County [NJ] | 800 | 294 | 335 | 174 |
| Duval County [FL] | 785 | 278 | 377 | 205 |
| New York County [NY] | 776 | 316 | 209 | 104 |
| Allegheny County [PA] | 743 | 373 | 176 | 141 |
| Virginia Beach city [VA] | 743 | 286 | 228 | 127 |
| Bronx County [NY] | 684 | 313 | 481 | 274 |
| Baltimore County [MD] | 641 | 335 | 75 | 53 |
| Travis County [TX] | 637 | 270 | 117 | 81 |
| Suffolk County [NY] | 602 | 298 | 190 | 140 |
| Placer County [CA] | 593 | 276 | 240 | 139 |
| Middlesex County [MA] | 593 | 205 | 199 | 105 |
| Bergen County [NJ] | 590 | 215 | 194 | 122 |
| Lake County [IL] | 577 | 219 | 136 | 63 |
| Prince William County [VA] | 573 | 316 | 125 | 127 |
| Macomb County [MI] | 557 | 274 | 253 | 178 |
| DuPage County [IL] | 538 | 197 | 152 | 90 |
| Wake County [NC] | 530 | 322 | 230 | 184 |
| Westchester County [NY] | 499 | 190 | 237 | 129 |
| Passaic County [NJ] | 490 | 338 | 155 | 148 |
| Franklin County [OH] | 487 | 195 | 180 | 94 |
| Broward County [FL] | 479 | 226 | 138 | 111 |
| District of Columbia [DC] | 462 | 209 | 122 | 135 |
| Loudoun County [VA] | 460 | 256 | 60 | 58 |
| Miami-Dade County [FL] | 454 | 202 | 163 | 92 |
| Hennepin County [MN] | 454 | 191 | 223 | 113 |
| Hudson County [NJ] | 448 | 216 | 106 | 91 |
| Oklahoma County [OK] | 445 | 203 | 51 | 40 |
| Essex County [MA] | 443 | 298 | 84 | 85 |
| Orange County [FL] | 440 | 218 | 159 | 90 |
| Rockland County [NY] | 412 | 230 | 125 | 94 |
| Cuyahoga County [OH] | 412 | 187 | 236 | 122 |
| Cobb County [GA] | 388 | 241 | 129 | 85 |
| Wayne County [MI] | 377 | 148 | 141 | 91 |
| Yolo County [CA] | 375 | 160 | 118 | 101 |
| Erie County [NY] | 361 | 231 | 205 | 187 |
| Guilford County [NC] | 356 | 155 | 103 | 86 |
| Jefferson Parish [LA] | 355 | 204 | 201 | 174 |
| Palm Beach County [FL] | 347 | 171 | 142 | 93 |
| Oakland County [MI] | 334 | 132 | 65 | 40 |
| Suffolk County [MA] | 320 | 115 | 84 | 74 |
| Burlington County [NJ] | 320 | 306 | 259 | 295 |
| Dane County [WI] | 312 | 118 | 199 | 88 |
| Ramsey County [MN] | 307 | 149 | 66 | 64 |
| Atlantic County [NJ] | 307 | 147 | 116 | 82 |
| St. Louis County [MO] | 306 | 162 | 78 | 64 |
| Union County [NJ] | 296 | 144 | 88 | 81 |
| Denver County [CO] | 290 | 148 | 129 | 75 |
| Denton County [TX] | 286 | 105 | 125 | 77 |
| Pinellas County [FL] | 278 | 125 | 63 | 60 |
| Hartford County [CT] | 277 | 176 | 133 | 89 |
| Worcester County [MA] | 277 | 134 | 92 | 74 |
| Davidson County [TN] | 270 | 113 | 98 | 60 |
| Camden County [NJ] | 269 | 143 | 66 | 66 |
| Washtenaw County [MI] | 268 | 153 | 72 | 99 |
| Ocean County [NJ] | 268 | 135 | 68 | 61 |
| New Haven County [CT] | 262 | 127 | 119 | 95 |
| Bernalillo County [NM] | 252 | 135 | 86 | 54 |
| Richmond County [NY] | 250 | 188 | 99 | 95 |
| Essex County [NJ] | 247 | 114 | 118 | 72 |
| Marion County [IN] | 239 | 135 | 85 | 69 |
| Somerset County [NJ] | 238 | 165 | 118 | 102 |
| Montgomery County [PA] | 236 | 126 | 56 | 40 |
| Johnson County [KS] | 229 | 105 | 58 | 45 |
| DeKalb County [GA] | 227 | 160 | 98 | 115 |
| Shelby County [TN] | 222 | 158 | 135 | 146 |
| Orange County [NY] | 210 | 165 | 119 | 131 |
| Morris County [NJ] | 206 | 121 | 123 | 105 |
| Anne Arundel County [MD] | 193 | 100 | 37 | 33 |
| Lancaster County [PA] | 184 | 93 | 82 | 60 |
| Hillsborough County [NH] | 183 | 103 | 97 | 66 |
| Dakota County [MN] | 180 | 130 | 16 | 27 |
| Milwaukee County [WI] | 167 | 108 | 25 | 29 |
| Monroe County [NY] | 164 | 130 | 10 | 17 |
| Polk County [IA] | 159 | 230 | 36 | 48 |
| Jefferson County [KY] | 155 | 87 | 61 | 49 |
| Providence County [RI] | 154 | 107 | 56 | 52 |
| Hamilton County [OH] | 153 | 109 | 23 | 25 |
| Fairfield County [CT] | 150 | 84 | 50 | 40 |
| Will County [IL] | 149 | 107 | (B) | - |
| Norfolk County [MA] | 147 | 90 | 22 | 25 |
| Henrico County [VA] | 139 | 99 | 75 | 60 |
| Baltimore city [MD] | 128 | 122 | 3 | 6 |
| Arlington County [VA] | 122 | 75 | 77 | 63 |
| Bristol County [MA] | 119 | 111 | 8 | 13 |
| Onondaga County [NY] | 105 | 66 | 68 | 52 |
| Howard County [MD] | 103 | 82 | 42 | 66 |
| Mercer County [NJ] | 101 | 79 | 60 | 49 |
| Monmouth County [NJ] | 98 | 67 | 12 | 20 |
| Kane County [IL] | 90 | 60 | 5 | 8 |
| Navajo County [AZ] | 89 | 77 | 15 | 22 |
| New Castle County [DE] | 88 | 61 | 19 | 26 |
| Bucks County [PA] | 88 | 63 | 16 | 26 |
| Delaware County [PA] | 68 | 62 | 36 | 37 |
| Lee County [FL] | 45 | 49 | (B) | - |
| San Juan County [NM] | 42 | 43 | 30 | 41 |
| Chester County [PA] | 39 | 38 | 21 | 31 |
| Hampden County [MA] | 28 | 36 | 10 | 17 |
| Plymouth County [MA] | 7 | 13 | (B) | - |
| Albany County [NY] | 5 | 7 | (B) | - |
| City / Metropolitan area / CBSA | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Urban Honolulu [HI] | 76,391 | 2,794 | 41,244 | 2,351 |
| Los Angeles-Long Beach-Anaheim [CA] | 37,527 | 2,037 | 12,050 | 991 |
| San Francisco-Oakland-Hayward [CA] | 23,471 | 1,798 | 8,225 | 968 |
| Seattle-Tacoma-Bellevue [WA] | 21,884 | 1,404 | 7,238 | 816 |
| Kahului-Wailuku-Lahaina [HI] | 14,978 | 1,487 | 7,172 | 1,045 |
| Hilo [HI] | 14,946 | 1,446 | 4,435 | 641 |
| New York-Newark-Jersey City [NY] | 13,588 | 1,380 | 5,756 | 770 |
| Riverside-San Bernardino-Ontario [CA] | 13,088 | 1,309 | 5,360 | 771 |
| San Diego-Carlsbad [CA] | 9,809 | 837 | 3,816 | 564 |
| Salt Lake City [UT] | 9,215 | 663 | 2,118 | 364 |
| Las Vegas-Henderson-Paradise [NV] | 8,732 | 1,314 | 3,200 | 940 |
| San Jose-Sunnyvale-Santa Clara [CA] | 8,334 | 870 | 3,231 | 490 |
| Sacramento-Roseville-Arden-Arcade [CA] | 8,217 | 928 | 3,056 | 476 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 7,033 | 962 | 2,095 | 495 |
| Portland-Vancouver-Hillsboro [OR-WA] | 6,538 | 776 | 2,016 | 483 |
| Houston-The Woodlands-Sugar Land [TX] | 5,309 | 983 | 1,584 | 506 |
| Phoenix-Mesa-Scottsdale [AZ] | 5,309 | 666 | 1,568 | 381 |
| Dallas-Fort Worth-Arlington [TX] | 5,208 | 653 | 1,411 | 330 |
| Chicago-Naperville-Elgin [IL-IN] | 4,964 | 709 | 1,314 | 289 |
| Anchorage [AK] | 4,801 | 661 | 1,384 | 332 |
| Stockton-Lodi [CA] | 3,909 | 693 | 1,644 | 377 |
| Atlanta-Sandy Springs-Roswell [GA] | 3,355 | 852 | 1,286 | 440 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 3,221 | 747 | 1,686 | 514 |
| Bakersfield [CA] | 2,504 | 480 | 1,287 | 339 |
| Boston-Cambridge-Newton [MA-NH] | 2,475 | 534 | 996 | 307 |
| Denver-Aurora-Lakewood [CO] | 2,225 | 520 | 930 | 277 |
| Vallejo-Fairfield [CA] | 1,951 | 389 | 500 | 122 |
| Kansas City [MO-KS] | 1,699 | 357 | 557 | 293 |
| Tampa-St. Petersburg-Clearwater [FL] | 1,552 | 416 | 569 | 269 |
| Salinas [CA] | 1,548 | 327 | 579 | 173 |
| Jacksonville [FL] | 1,378 | 478 | 592 | 290 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 1,357 | 329 | 488 | 179 |
| Detroit-Warren-Dearborn [MI] | 1,344 | 316 | 472 | 211 |
| Charlotte-Concord-Gastonia [NC-SC] | 1,304 | 435 | 458 | 179 |
| Fresno [CA] | 1,287 | 326 | 440 | 143 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 1,280 | 329 | 443 | 160 |
| Austin-Round Rock [TX] | 1,255 | 376 | 341 | 156 |
| Reno [NV] | 1,178 | 285 | 253 | 138 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 1,174 | 319 | 352 | 144 |
| Santa Rosa [CA] | 1,172 | 270 | 304 | 146 |
| Tucson [AZ] | 1,133 | 410 | 187 | 116 |
| Spokane-Spokane Valley [WA] | 1,107 | 337 | 711 | 280 |
| Baltimore-Columbia-Towson [MD] | 1,082 | 376 | 157 | 92 |
| San Antonio-New Braunfels [TX] | 1,070 | 306 | 285 | 139 |
| Modesto [CA] | 967 | 345 | 250 | 155 |
| Orlando-Kissimmee-Sanford [FL] | 957 | 366 | 372 | 207 |
| Oxnard-Thousand Oaks-Ventura [CA] | 946 | 258 | 373 | 121 |
| Oklahoma City [OK] | 879 | 217 | 284 | 130 |
| Santa Maria-Santa Barbara [CA] | 879 | 261 | 262 | 115 |
| Pittsburgh [PA] | 820 | 381 | 183 | 142 |
| Colorado Springs [CO] | 802 | 217 | 341 | 139 |
| Columbus [OH] | 687 | 289 | 198 | 96 |
| St. Louis [MO-IL] | 665 | 219 | 175 | 81 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 647 | 233 | 221 | 147 |
| Tulsa [OK] | 575 | 163 | 199 | 98 |
| New Orleans-Metairie [LA] | 556 | 253 | 280 | 205 |
| Raleigh [NC] | 556 | 321 | 256 | 187 |
| Cleveland-Elyria [OH] | 476 | 195 | 254 | 127 |
| Indianapolis-Carmel-Anderson [IN] | 472 | 182 | 161 | 107 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 439 | 234 | 239 | 191 |
| Cincinnati [OH-KY-IN] | 421 | 176 | 159 | 93 |
| Greensboro-High Point [NC] | 416 | 175 | 134 | 92 |
| Omaha-Council Bluffs [NE-IA] | 372 | 183 | 53 | 32 |
| Memphis [TN-MS-AR] | 360 | 198 | 173 | 151 |
| Hartford-West Hartford-East Hartford [CT] | 345 | 194 | 133 | 89 |
| Providence-Warwick [RI-MA] | 335 | 155 | 67 | 52 |
| Deltona-Daytona Beach-Ormond Beach [FL] | 329 | 209 | 57 | 55 |
| Madison [WI] | 317 | 118 | 202 | 88 |
| Atlantic City-Hammonton [NJ] | 307 | 147 | 116 | 82 |
| Albuquerque [NM] | 292 | 140 | 88 | 54 |
| Richmond [VA] | 283 | 126 | 78 | 61 |
| Harrisburg-Carlisle [PA] | 282 | 176 | 66 | 51 |
| Worcester [MA-CT] | 277 | 134 | 92 | 74 |
| Ann Arbor [MI] | 268 | 153 | 72 | 99 |
| New Haven-Milford [CT] | 262 | 127 | 119 | 95 |
| Milwaukee-Waukesha-West Allis [WI] | 249 | 138 | 80 | 59 |
| Des Moines-West Des Moines [IA] | 243 | 241 | 62 | 53 |
| Durham-Chapel Hill [NC] | 231 | 160 | 84 | 85 |
| Rochester [NY] | 193 | 134 | 21 | 26 |
| Lancaster [PA] | 184 | 93 | 82 | 60 |
| Louisville Jefferson County [KY] | 183 | 89 | 61 | 49 |
| Manchester-Nashua [NH] | 183 | 103 | 97 | 66 |
| New York-Newark-Jersey City [NY-NJ-PA] | 178 | 126 | 27 | 35 |
| Albany-Schenectady-Troy [NY] | 163 | 107 | 27 | 34 |
| Grand Rapids-Wyoming [MI] | 163 | 95 | 30 | 31 |
| Akron [OH] | 158 | 110 | 73 | 55 |
| Bridgeport-Stamford-Norwalk [CT] | 150 | 84 | 50 | 40 |
| Lansing-East Lansing [MI] | 142 | 67 | 54 | 39 |
| Allentown-Bethlehem-Easton [PA-NJ] | 129 | 87 | 34 | 54 |
| Portland-South Portland [ME] | 125 | 69 | 25 | 30 |
| Dayton [OH] | 116 | 105 | 77 | 92 |
| Syracuse [NY] | 105 | 66 | 68 | 52 |
| Trenton [NJ] | 101 | 79 | 60 | 49 |
| Show Low [AZ] | 89 | 77 | 15 | 22 |
| Baton Rouge [LA] | 80 | 69 | (B) | - |
| Lafayette [LA] | 52 | 64 | (B) | - |
| Cape Coral-Fort Myers [FL] | 45 | 49 | (B) | - |
| Farmington [NM] | 42 | 43 | 30 | 41 |
| Springfield [MA] | 34 | 38 | 10 | 17 |