| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 247,760 | 5,508 | 51,635 | 2,104 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| California | 39,870 | 2,028 | 8,580 | 919 |
| Texas | 26,260 | 1,847 | 5,220 | 681 |
| New Jersey | 25,940 | 1,623 | 6,000 | 740 |
| Virginia | 14,645 | 1,496 | 2,345 | 510 |
| Illinois | 14,355 | 1,299 | 2,950 | 471 |
| Georgia | 8,995 | 1,074 | 2,025 | 467 |
| Michigan | 8,695 | 916 | 1,605 | 301 |
| Florida | 8,255 | 1,196 | 1,785 | 481 |
| New York | 7,880 | 777 | 1,840 | 391 |
| Pennsylvania | 7,875 | 925 | 1,600 | 471 |
| Massachusetts | 7,625 | 921 | 1,850 | 476 |
| Ohio | 7,490 | 1,019 | 1,585 | 395 |
| Washington | 6,870 | 825 | 1,680 | 407 |
| Maryland | 6,845 | 1,075 | 1,000 | 282 |
| North Carolina | 6,690 | 955 | 1,630 | 493 |
| Connecticut | 5,575 | 825 | 1,625 | 401 |
| Minnesota | 4,930 | 876 | 850 | 330 |
| Arizona | 4,725 | 902 | 1,125 | 456 |
| Missouri | 3,610 | 625 | 490 | 188 |
| Wisconsin | 2,615 | 502 | 460 | 228 |
| Tennessee | 2,560 | 569 | 475 | 188 |
| Delaware | 2,435 | 546 | 315 | 137 |
| Colorado | 2,405 | 575 | 465 | 189 |
| Kansas | 2,135 | 497 | 485 | 230 |
| Indiana | 2,130 | 515 | 490 | 202 |
| Kentucky | 1,690 | 370 | 435 | 206 |
| Oregon | 1,605 | 541 | 430 | 312 |
| Iowa | 1,600 | 387 | 325 | 137 |
| New Hampshire | 1,415 | 383 | 235 | 102 |
| Louisiana | 1,200 | 375 | 145 | 151 |
| Oklahoma | 1,145 | 567 | 170 | 95 |
| Alabama | 1,130 | 259 | 255 | 140 |
| Nebraska | 1,055 | 306 | 170 | 83 |
| South Carolina | 940 | 316 | 190 | 114 |
| Arkansas | 905 | 327 | 195 | 139 |
| Utah | 580 | 185 | 135 | 85 |
| Nevada | 530 | 306 | 85 | 82 |
| West Virginia | 455 | 205 | 65 | 47 |
| Mississippi | 440 | 208 | (D) | (D) |
| New Mexico | 360 | 214 | 55 | 54 |
| Maine | 285 | 261 | (D) | (D) |
| Idaho | 195 | 120 | (D) | (D) |
| Hawaii | 185 | 111 | (D) | (D) |
| North Dakota | 170 | 116 | 55 | 59 |
| Rhode Island | 110 | 75 | (B) | - |
| South Dakota | 105 | 75 | (D) | (D) |
| Montana | 80 | 92 | (D) | (D) |
| Alaska | 60 | 61 | (D) | (D) |
| Wyoming | 50 | 71 | (D) | (D) |
| District of Columbia | 45 | 42 | (B) | - |
| Vermont | (D) | (D) | (B) | - |
| Puerto Rico | (D) | (D) | (B) | - |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Santa Clara County [CA] | 14,015 | 1,336 | 2,520 | 474 |
| Middlesex County [NJ] | 12,520 | 1,055 | 3,475 | 617 |
| Alameda County [CA] | 6,690 | 885 | 1,170 | 336 |
| Fairfax County [VA] | 6,210 | 1,049 | 890 | 297 |
| Dallas County [TX] | 5,400 | 894 | 1,155 | 320 |
| King County [WA] | 5,380 | 754 | 1,300 | 358 |
| Cook County [IL] | 5,275 | 880 | 1,175 | 323 |
| Los Angeles County [CA] | 4,620 | 803 | 1,310 | 359 |
| Oakland County [MI] | 4,495 | 657 | 885 | 242 |
| Loudoun County [VA] | 4,420 | 591 | 660 | 231 |
| Maricopa County [AZ] | 4,385 | 874 | 1,095 | 453 |
| Collin County [TX] | 3,945 | 715 | 1,025 | 319 |
| Harris County [TX] | 3,615 | 654 | 870 | 308 |
| Middlesex County [MA] | 3,075 | 647 | 810 | 404 |
| San Diego County [CA] | 2,820 | 665 | 770 | 291 |
| Fulton County [GA] | 2,770 | 649 | 640 | 294 |
| DuPage County [IL] | 2,755 | 589 | 575 | 228 |
| Wake County [NC] | 2,675 | 548 | 425 | 191 |
| Franklin County [OH] | 2,615 | 653 | 575 | 263 |
| Orange County [CA] | 2,515 | 548 | 595 | 270 |
| Hennepin County [MN] | 2,445 | 576 | 575 | 312 |
| Travis County [TX] | 2,445 | 538 | 195 | 100 |
| Fairfield County [CT] | 2,375 | 521 | 825 | 329 |
| Somerset County [NJ] | 2,370 | 531 | 335 | 181 |
| Contra Costa County [CA] | 2,340 | 510 | 700 | 302 |
| New Castle County [DE] | 2,335 | 548 | 270 | 123 |
| Montgomery County [MD] | 2,320 | 611 | 280 | 158 |
| Howard County [MD] | 2,085 | 523 | 150 | 88 |
| Henrico County [VA] | 2,055 | 557 | 375 | 187 |
| Mecklenburg County [NC] | 2,000 | 574 | 825 | 392 |
| Worcester County [MA] | 1,905 | 521 | 580 | 339 |
| Denton County [TX] | 1,900 | 512 | 240 | 119 |
| Mercer County [NJ] | 1,885 | 614 | 235 | 145 |
| St. Louis County [MO] | 1,855 | 488 | 270 | 146 |
| Allegheny County [PA] | 1,855 | 565 | 560 | 420 |
| Wayne County [MI] | 1,790 | 528 | 175 | 92 |
| Bergen County [NJ] | 1,750 | 487 | 420 | 208 |
| Hillsborough County [FL] | 1,745 | 446 | 335 | 203 |
| Duval County [FL] | 1,700 | 509 | 270 | 124 |
| Johnson County [KS] | 1,695 | 467 | 405 | 215 |
| Hartford County [CT] | 1,645 | 482 | 435 | 225 |
| Morris County [NJ] | 1,640 | 449 | 425 | 199 |
| Bexar County [TX] | 1,630 | 414 | 355 | 158 |
| Sacramento County [CA] | 1,620 | 565 | 360 | 224 |
| Cobb County [GA] | 1,525 | 556 | 200 | 154 |
| Hudson County [NJ] | 1,525 | 356 | 380 | 176 |
| Fort Bend County [TX] | 1,435 | 490 | 205 | 136 |
| Chester County [PA] | 1,420 | 347 | 320 | 137 |
| Norfolk County [MA] | 1,390 | 358 | 280 | 124 |
| Montgomery County [PA] | 1,375 | 358 | 280 | 133 |
| Gwinnett County [GA] | 1,365 | 419 | 250 | 163 |
| Monmouth County [NJ] | 1,210 | 356 | 205 | 116 |
| Washington County [OR] | 1,210 | 502 | 370 | 312 |
| Lake County [IL] | 1,200 | 333 | 190 | 102 |
| Tarrant County [TX] | 1,195 | 421 | 430 | 269 |
| Queens County [NY] | 1,165 | 354 | 295 | 152 |
| Dakota County [MN] | 1,065 | 371 | 80 | 53 |
| Cuyahoga County [OH] | 1,050 | 471 | 215 | 117 |
| Baltimore County [MD] | 1,030 | 396 | 245 | 143 |
| New Haven County [CT] | 1,005 | 329 | 255 | 128 |
| Will County [IL] | 1,000 | 351 | 90 | 67 |
| Shelby County [TN] | 995 | 391 | 265 | 166 |
| Ventura County [CA] | 985 | 256 | 170 | 97 |
| Nassau County [NY] | 955 | 340 | 310 | 140 |
| San Mateo County [CA] | 930 | 314 | 210 | 125 |
| Hillsborough County [NH] | 900 | 289 | 95 | 70 |
| Snohomish County [WA] | 875 | 330 | 310 | 191 |
| Washtenaw County [MI] | 860 | 266 | 210 | 95 |
| Broward County [FL] | 825 | 351 | 170 | 151 |
| DeKalb County [GA] | 805 | 265 | 360 | 253 |
| Dane County [WI] | 790 | 275 | 170 | 187 |
| Arapahoe County [CO] | 775 | 327 | 180 | 128 |
| Jefferson County [KY] | 675 | 301 | 150 | 143 |
| Oklahoma County [OK] | 660 | 503 | 85 | 77 |
| Albany County [NY] | 655 | 279 | 75 | 72 |
| Burlington County [NJ] | 650 | 257 | 100 | 50 |
| San Bernardino County [CA] | 640 | 287 | 330 | 224 |
| Suffolk County [NY] | 625 | 281 | 170 | 114 |
| Passaic County [NJ] | 530 | 252 | 160 | 139 |
| Delaware County [PA] | 530 | 218 | 100 | 78 |
| Orange County [FL] | 525 | 232 | 130 | 109 |
| Bristol County [MA] | 505 | 248 | 45 | 39 |
| New York County [NY] | 505 | 216 | 85 | 53 |
| Bucks County [PA] | 505 | 183 | 55 | 61 |
| Union County [NJ] | 500 | 242 | (B) | - |
| Salt Lake County [UT] | 490 | 178 | 115 | 77 |
| Kane County [IL] | 485 | 269 | 90 | 129 |
| Palm Beach County [FL] | 480 | 258 | 130 | 155 |
| Hamilton County [OH] | 480 | 188 | 75 | 72 |
| Polk County [IA] | 475 | 228 | 145 | 106 |
| Camden County [NJ] | 475 | 254 | (D) | (D) |
| Miami-Dade County [FL] | 470 | 367 | 185 | 201 |
| Monroe County [NY] | 455 | 216 | 165 | 163 |
| Erie County [NY] | 445 | 193 | 105 | 99 |
| Prince George s County [MD] | 430 | 194 | 95 | 91 |
| Westchester County [NY] | 405 | 190 | 70 | 45 |
| Rockland County [NY] | 390 | 198 | 115 | 83 |
| Milwaukee County [WI] | 390 | 209 | 50 | 48 |
| Marion County [IN] | 385 | 169 | 80 | 79 |
| Pinellas County [FL] | 380 | 195 | 160 | 107 |
| Anne Arundel County [MD] | 370 | 187 | 110 | 69 |
| Davidson County [TN] | 345 | 137 | (D) | (D) |
| Philadelphia County [PA] | 340 | 209 | 25 | 28 |
| Clark County [NV] | 335 | 236 | (D) | (D) |
| Essex County [MA] | 330 | 205 | 40 | 46 |
| Prince William County [VA] | 325 | 213 | 70 | 82 |
| Kings County [NY] | 315 | 171 | 65 | 58 |
| Pima County [AZ] | 285 | 205 | (D) | (D) |
| Solano County [CA] | 280 | 198 | (D) | (D) |
| San Joaquin County [CA] | 275 | 212 | 50 | 65 |
| Placer County [CA] | 270 | 192 | 70 | 72 |
| San Francisco County [CA] | 270 | 134 | (B) | - |
| Denver County [CO] | 270 | 154 | (D) | (D) |
| Bronx County [NY] | 255 | 154 | 30 | 32 |
| Ramsey County [MN] | 240 | 142 | 25 | 31 |
| Onondaga County [NY] | 225 | 148 | 65 | 56 |
| Guilford County [NC] | 225 | 147 | (D) | (D) |
| Jefferson Parish [LA] | 210 | 148 | (B) | - |
| Riverside County [CA] | 195 | 122 | 40 | 37 |
| Washoe County [NV] | 195 | 152 | (D) | (D) |
| Essex County [NJ] | 190 | 95 | 45 | 32 |
| Honolulu County [HI] | 180 | 111 | (D) | (D) |
| Fresno County [CA] | 175 | 141 | 40 | 71 |
| Suffolk County [MA] | 165 | 112 | 45 | 42 |
| Atlantic County [NJ] | 165 | 121 | 40 | 47 |
| Multnomah County [OR] | 160 | 142 | (D) | (D) |
| Kern County [CA] | 155 | 124 | 40 | 45 |
| Bernalillo County [NM] | 155 | 156 | (D) | (D) |
| Baltimore city [MD] | 140 | 88 | (D) | (D) |
| Macomb County [MI] | 140 | 97 | 30 | 39 |
| Virginia Beach city [VA] | 140 | 112 | (D) | (D) |
| El Paso County [CO] | 135 | 98 | (B) | - |
| Monterey County [CA] | 130 | 144 | (B) | - |
| Arlington County [VA] | 130 | 97 | (D) | (D) |
| Hampden County [MA] | 125 | 98 | 45 | 48 |
| Richmond County [NY] | 125 | 93 | (D) | (D) |
| Lee County [FL] | 120 | 116 | (D) | (D) |
| Sonoma County [CA] | 100 | 112 | (D) | (D) |
| Clark County [WA] | 90 | 92 | (B) | - |
| Santa Barbara County [CA] | 75 | 62 | (B) | - |
| Plymouth County [MA] | 75 | 73 | (B) | - |
| Providence County [RI] | 65 | 68 | (B) | - |
| Collier County [FL] | 55 | 84 | (D) | (D) |
| Pierce County [WA] | 55 | 51 | (B) | - |
| Stanislaus County [CA] | 45 | 67 | (B) | - |
| District of Columbia [DC] | 45 | 42 | (B) | - |
| Orange County [NY] | 45 | 70 | (D) | (D) |
| Anchorage Municipality [AK] | 40 | 53 | (B) | - |
| Yolo County [CA] | 10 | 12 | (B) | - |
| Hawaii County [HI] | (D) | (D) | (B) | - |
| Ocean County [NJ] | (D) | (D) | (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] | 27,610 | 1,489 | 6,715 | 775 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 14,605 | 1,414 | 2,150 | 442 |
| San Jose-Sunnyvale-Santa Clara [CA] | 14,015 | 1,336 | 2,520 | 474 |
| Dallas-Fort Worth-Arlington [TX] | 12,630 | 1,365 | 2,925 | 521 |
| Chicago-Naperville-Elgin [IL-IN] | 11,235 | 1,285 | 2,230 | 448 |
| San Francisco-Oakland-Hayward [CA] | 10,285 | 1,136 | 2,110 | 519 |
| Atlanta-Sandy Springs-Roswell [GA] | 8,455 | 1,023 | 1,900 | 465 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 7,945 | 1,071 | 1,300 | 293 |
| Los Angeles-Long Beach-Anaheim [CA] | 7,135 | 861 | 1,905 | 431 |
| Detroit-Warren-Dearborn [MI] | 6,480 | 941 | 1,090 | 267 |
| Seattle-Tacoma-Bellevue [WA] | 6,315 | 806 | 1,610 | 400 |
| Houston-The Woodlands-Sugar Land [TX] | 6,130 | 963 | 1,235 | 347 |
| Boston-Cambridge-Newton [MA-NH] | 5,415 | 871 | 1,310 | 452 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 4,850 | 872 | 835 | 326 |
| Phoenix-Mesa-Scottsdale [AZ] | 4,395 | 875 | 1,095 | 453 |
| Baltimore-Columbia-Towson [MD] | 3,780 | 727 | 520 | 201 |
| Austin-Round Rock [TX] | 3,715 | 625 | 320 | 144 |
| Columbus [OH] | 3,590 | 784 | 755 | 297 |
| St. Louis [MO-IL] | 2,905 | 594 | 390 | 170 |
| San Diego-Carlsbad [CA] | 2,820 | 665 | 770 | 291 |
| Raleigh [NC] | 2,675 | 548 | 425 | 191 |
| Charlotte-Concord-Gastonia [NC-SC] | 2,480 | 638 | 945 | 410 |
| Bridgeport-Stamford-Norwalk [CT] | 2,375 | 521 | 825 | 329 |
| Richmond [VA] | 2,290 | 590 | 485 | 212 |
| Tampa-St. Petersburg-Clearwater [FL] | 2,285 | 505 | 505 | 234 |
| Kansas City [MO-KS] | 2,180 | 500 | 435 | 215 |
| Sacramento-Roseville-Arden-Arcade [CA] | 2,055 | 590 | 450 | 240 |
| Pittsburgh [PA] | 1,985 | 573 | 655 | 423 |
| Worcester [MA-CT] | 1,905 | 521 | 580 | 339 |
| Trenton [NJ] | 1,885 | 614 | 235 | 145 |
| Hartford-West Hartford-East Hartford [CT] | 1,835 | 482 | 460 | 224 |
| Jacksonville [FL] | 1,810 | 529 | 285 | 126 |
| Cincinnati [OH-KY-IN] | 1,795 | 470 | 295 | 138 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 1,775 | 599 | 480 | 313 |
| San Antonio-New Braunfels [TX] | 1,630 | 414 | 355 | 158 |
| Denver-Aurora-Lakewood [CO] | 1,595 | 475 | 390 | 177 |
| Portland-Vancouver-Hillsboro [OR-WA] | 1,530 | 552 | 420 | 313 |
| Indianapolis-Carmel-Anderson [IN] | 1,180 | 401 | 190 | 116 |
| Milwaukee-Waukesha-West Allis [WI] | 1,135 | 345 | 235 | 99 |
| Cleveland-Elyria [OH] | 1,120 | 475 | 215 | 117 |
| Albany-Schenectady-Troy [NY] | 1,025 | 347 | 185 | 127 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 1,015 | 347 | 95 | 72 |
| New Haven-Milford [CT] | 1,005 | 329 | 255 | 128 |
| Orlando-Kissimmee-Sanford [FL] | 1,005 | 414 | 280 | 225 |
| Memphis [TN-MS-AR] | 995 | 391 | 265 | 166 |
| Oxnard-Thousand Oaks-Ventura [CA] | 985 | 256 | 170 | 97 |
| Manchester-Nashua [NH] | 900 | 289 | 95 | 70 |
| Ann Arbor [MI] | 860 | 266 | 210 | 95 |
| Riverside-San Bernardino-Ontario [CA] | 830 | 292 | 365 | 219 |
| Madison [WI] | 790 | 275 | 170 | 187 |
| Oklahoma City [OK] | 780 | 514 | 100 | 81 |
| Omaha-Council Bluffs [NE-IA] | 775 | 267 | 125 | 66 |
| Louisville Jefferson County [KY] | 760 | 322 | 160 | 145 |
| Des Moines-West Des Moines [IA] | 740 | 282 | 200 | 121 |
| Durham-Chapel Hill [NC] | 660 | 341 | 125 | 98 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 655 | 314 | 145 | 152 |
| Baton Rouge [LA] | 645 | 311 | 125 | 148 |
| Harrisburg-Carlisle [PA] | 645 | 235 | 90 | 75 |
| Providence-Warwick [RI-MA] | 615 | 253 | 45 | 39 |
| Salt Lake City [UT] | 490 | 178 | 115 | 77 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 470 | 194 | 105 | 99 |
| Rochester [NY] | 455 | 216 | 165 | 163 |
| Allentown-Bethlehem-Easton [PA-NJ] | 385 | 199 | 35 | 27 |
| Dayton [OH] | 380 | 171 | 100 | 118 |
| Lansing-East Lansing [MI] | 380 | 203 | 135 | 123 |
| Las Vegas-Henderson-Paradise [NV] | 335 | 236 | (D) | (D) |
| New Orleans-Metairie [LA] | 315 | 160 | (D) | (D) |
| Tucson [AZ] | 285 | 205 | (D) | (D) |
| Grand Rapids-Wyoming [MI] | 280 | 190 | 40 | 39 |
| Vallejo-Fairfield [CA] | 280 | 198 | (D) | (D) |
| Stockton-Lodi [CA] | 275 | 212 | 50 | 65 |
| Greensboro-High Point [NC] | 270 | 161 | (D) | (D) |
| Syracuse [NY] | 225 | 148 | 65 | 56 |
| Tulsa [OK] | 205 | 141 | 45 | 38 |
| Portland-South Portland [ME] | 195 | 235 | (D) | (D) |
| Reno [NV] | 195 | 152 | (D) | (D) |
| Urban Honolulu [HI] | 180 | 111 | (D) | (D) |
| Deltona-Daytona Beach-Ormond Beach [FL] | 175 | 189 | (D) | (D) |
| Fresno [CA] | 175 | 141 | 40 | 71 |
| Atlantic City-Hammonton [NJ] | 165 | 121 | 40 | 47 |
| Springfield [MA] | 165 | 110 | 45 | 48 |
| Akron [OH] | 160 | 116 | 70 | 91 |
| Albuquerque [NM] | 155 | 156 | (D) | (D) |
| Bakersfield [CA] | 155 | 124 | 40 | 45 |
| Colorado Springs [CO] | 135 | 98 | (B) | - |
| Salinas [CA] | 130 | 144 | (B) | - |
| Cape Coral-Fort Myers [FL] | 120 | 116 | (D) | (D) |
| Santa Rosa [CA] | 100 | 112 | (D) | (D) |
| Spokane-Spokane Valley [WA] | 90 | 90 | (B) | - |
| New York-Newark-Jersey City [NY-NJ-PA] | 85 | 87 | (B) | - |
| Santa Maria-Santa Barbara [CA] | 75 | 62 | (B) | - |
| Naples-Immokalee-Marco Island [FL] | 55 | 84 | (D) | (D) |
| Modesto [CA] | 45 | 67 | (B) | - |
| Anchorage [AK] | 40 | 53 | (B) | - |
| Hilo [HI] | (D) | (D) | (B) | - |
| Lafayette [LA] | (D) | (D) | (B) | - |