| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 62,645 | 3,308 | 44,530 | 2,657 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| California | 16,590 | 1,323 | 10,210 | 974 |
| New York | 7,145 | 1,085 | 5,035 | 852 |
| Texas | 5,510 | 886 | 4,715 | 781 |
| Indiana | 5,035 | 778 | 4,320 | 741 |
| Maryland | 2,330 | 693 | 1,320 | 493 |
| Florida | 2,005 | 627 | 1,355 | 500 |
| Illinois | 1,975 | 565 | 1,550 | 454 |
| Georgia | 1,650 | 583 | 1,135 | 413 |
| Pennsylvania | 1,640 | 666 | 1,150 | 564 |
| Oklahoma | 1,400 | 379 | 1,110 | 324 |
| New Jersey | 1,310 | 405 | 730 | 282 |
| Virginia | 1,285 | 448 | 560 | 209 |
| North Carolina | 1,280 | 419 | 880 | 283 |
| Massachusetts | 1,010 | 324 | 785 | 320 |
| Minnesota | 1,000 | 381 | 790 | 338 |
| Kansas | 905 | 372 | 830 | 363 |
| Michigan | 895 | 331 | 840 | 325 |
| Oregon | 895 | 510 | 680 | 378 |
| Washington | 890 | 455 | 530 | 326 |
| Colorado | 775 | 374 | 630 | 317 |
| Tennessee | 720 | 361 | 575 | 286 |
| Kentucky | 685 | 480 | 530 | 400 |
| Arizona | 665 | 360 | 480 | 276 |
| Wisconsin | 660 | 301 | 520 | 276 |
| Ohio | 615 | 250 | 415 | 180 |
| Utah | 610 | 478 | 490 | 384 |
| Nebraska | 440 | 203 | 375 | 184 |
| Iowa | 330 | 150 | 305 | 151 |
| Louisiana | 295 | 234 | 275 | 241 |
| Missouri | 260 | 150 | 240 | 146 |
| Alabama | 220 | 159 | 190 | 143 |
| Connecticut | 205 | 133 | 140 | 91 |
| Nevada | 205 | 162 | 80 | 68 |
| South Carolina | 205 | 176 | 175 | 166 |
| Hawaii | 170 | 146 | 80 | 94 |
| District of Columbia | 135 | 111 | (D) | (D) |
| Rhode Island | 120 | 124 | 95 | 100 |
| South Dakota | 90 | 83 | 90 | 83 |
| New Hampshire | 80 | 96 | 40 | 54 |
| Idaho | 70 | 74 | 70 | 74 |
| New Mexico | 70 | 113 | 45 | 78 |
| Vermont | 65 | 89 | 65 | 89 |
| West Virginia | 55 | 50 | 20 | 20 |
| Maine | 25 | 37 | (D) | (D) |
| Alaska | (D) | (D) | (B) | - |
| Arkansas | (D) | (D) | (B) | - |
| Delaware | (D) | (D) | (D) | (D) |
| Mississippi | (D) | (D) | (B) | - |
| Montana | (D) | (D) | (D) | (D) |
| Wyoming | (D) | (D) | (B) | - |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Los Angeles County [CA] | 5,435 | 748 | 3,325 | 529 |
| Alameda County [CA] | 2,890 | 693 | 1,650 | 462 |
| San Mateo County [CA] | 2,585 | 547 | 1,855 | 429 |
| Queens County [NY] | 2,395 | 623 | 1,580 | 470 |
| Marion County [IN] | 1,875 | 677 | 1,770 | 677 |
| San Francisco County [CA] | 1,390 | 405 | 1,080 | 314 |
| Cook County [IL] | 1,255 | 520 | 1,010 | 431 |
| Harris County [TX] | 1,165 | 522 | 890 | 456 |
| Kings County [NY] | 1,040 | 385 | 650 | 261 |
| Erie County [NY] | 1,025 | 542 | 870 | 454 |
| DeKalb County [GA] | 835 | 464 | 655 | 341 |
| Orange County [CA] | 790 | 313 | 365 | 168 |
| King County [WA] | 715 | 413 | 480 | 313 |
| Duval County [FL] | 695 | 447 | 575 | 422 |
| Ramsey County [MN] | 695 | 360 | 580 | 318 |
| Dallas County [TX] | 645 | 294 | 585 | 259 |
| Montgomery County [MD] | 605 | 345 | 325 | 245 |
| Santa Clara County [CA] | 600 | 225 | 395 | 194 |
| Maricopa County [AZ] | 585 | 336 | 400 | 255 |
| Multnomah County [OR] | 550 | 325 | 515 | 320 |
| Monroe County [NY] | 545 | 290 | 515 | 290 |
| Lancaster County [PA] | 520 | 476 | 405 | 443 |
| Gwinnett County [GA] | 515 | 339 | 235 | 198 |
| Salt Lake County [UT] | 515 | 462 | 420 | 375 |
| Milwaukee County [WI] | 495 | 294 | 425 | 277 |
| San Diego County [CA] | 470 | 189 | 260 | 122 |
| Fairfax County [VA] | 435 | 309 | 40 | 48 |
| Howard County [MD] | 385 | 389 | 240 | 317 |
| Bergen County [NJ] | 380 | 226 | 85 | 72 |
| Davidson County [TN] | 380 | 304 | 265 | 189 |
| Bexar County [TX] | 380 | 167 | 370 | 167 |
| Delaware County [PA] | 370 | 291 | 175 | 173 |
| Middlesex County [MA] | 350 | 193 | 280 | 181 |
| Riverside County [CA] | 340 | 307 | 130 | 130 |
| Middlesex County [NJ] | 335 | 216 | 260 | 184 |
| Arapahoe County [CO] | 315 | 220 | 275 | 196 |
| DuPage County [IL] | 315 | 185 | 215 | 124 |
| Contra Costa County [CA] | 305 | 186 | 100 | 80 |
| Mecklenburg County [NC] | 300 | 188 | 210 | 144 |
| Travis County [TX] | 295 | 170 | 245 | 146 |
| Palm Beach County [FL] | 290 | 218 | 70 | 51 |
| Westchester County [NY] | 285 | 209 | 50 | 43 |
| Camden County [NJ] | 275 | 169 | 275 | 169 |
| Jefferson County [KY] | 260 | 335 | 260 | 335 |
| Baltimore County [MD] | 260 | 207 | 115 | 125 |
| Miami-Dade County [FL] | 245 | 206 | 210 | 182 |
| Philadelphia County [PA] | 235 | 183 | 180 | 165 |
| Polk County [IA] | 220 | 140 | 195 | 141 |
| Norfolk County [MA] | 220 | 191 | 195 | 185 |
| New York County [NY] | 220 | 162 | 105 | 118 |
| San Bernardino County [CA] | 215 | 125 | 90 | 63 |
| Clark County [NV] | 205 | 162 | 80 | 68 |
| Oklahoma County [OK] | 205 | 159 | 185 | 158 |
| Franklin County [OH] | 200 | 128 | 140 | 88 |
| Denton County [TX] | 200 | 161 | 180 | 131 |
| Denver County [CO] | 195 | 267 | 165 | 220 |
| Henrico County [VA] | 195 | 179 | 145 | 129 |
| Hillsborough County [FL] | 175 | 148 | 115 | 138 |
| Worcester County [MA] | 175 | 142 | 140 | 124 |
| Tarrant County [TX] | 175 | 124 | 165 | 116 |
| Anne Arundel County [MD] | 155 | 151 | 80 | 81 |
| Prince George s County [MD] | 155 | 222 | 75 | 106 |
| Honolulu County [HI] | 150 | 142 | 80 | 94 |
| Lee County [FL] | 145 | 234 | 115 | 178 |
| Orange County [NY] | 145 | 148 | 105 | 115 |
| Richmond County [NY] | 140 | 137 | 100 | 95 |
| Collin County [TX] | 140 | 178 | 140 | 178 |
| District of Columbia [DC] | 135 | 111 | (D) | (D) |
| Yolo County [CA] | 120 | 110 | 80 | 83 |
| Hamilton County [OH] | 120 | 129 | 80 | 98 |
| Sacramento County [CA] | 115 | 91 | 65 | 65 |
| Cuyahoga County [OH] | 110 | 82 | 90 | 80 |
| Suffolk County [MA] | 105 | 110 | 100 | 107 |
| Providence County [RI] | 105 | 122 | 80 | 97 |
| Fresno County [CA] | 100 | 106 | 100 | 106 |
| Stanislaus County [CA] | 95 | 150 | (D) | (D) |
| Nassau County [NY] | 90 | 79 | 50 | 47 |
| Kern County [CA] | 85 | 90 | 65 | 81 |
| Orange County [FL] | 85 | 85 | 75 | 79 |
| Hennepin County [MN] | 85 | 90 | 85 | 90 |
| Bronx County [NY] | 85 | 67 | 75 | 65 |
| Essex County [NJ] | 80 | 80 | 30 | 35 |
| Burlington County [NJ] | 75 | 84 | (D) | (D) |
| Wake County [NC] | 75 | 76 | 45 | 42 |
| Montgomery County [PA] | 75 | 67 | 55 | 60 |
| Mercer County [NJ] | 70 | 92 | (D) | (D) |
| Bernalillo County [NM] | 70 | 113 | 45 | 78 |
| Suffolk County [NY] | 65 | 49 | 55 | 43 |
| Fort Bend County [TX] | 65 | 82 | 50 | 75 |
| Loudoun County [VA] | 65 | 56 | (D) | (D) |
| Hartford County [CT] | 60 | 48 | 45 | 34 |
| Broward County [FL] | 60 | 47 | (D) | (D) |
| Baltimore city [MD] | 60 | 75 | 55 | 71 |
| St. Louis County [MO] | 60 | 70 | 60 | 70 |
| Dakota County [MN] | 45 | 56 | 20 | 29 |
| Hudson County [NJ] | 45 | 41 | (D) | (D) |
| Onondaga County [NY] | 45 | 38 | 35 | 29 |
| Allegheny County [PA] | 45 | 39 | (D) | (D) |
| Oakland County [MI] | 40 | 50 | (D) | (D) |
| Prince William County [VA] | 40 | 54 | 15 | 31 |
| Pierce County [WA] | 40 | 41 | (B) | - |
| San Joaquin County [CA] | 35 | 42 | (D) | (D) |
| New Haven County [CT] | 35 | 45 | (D) | (D) |
| Kane County [IL] | 35 | 102 | (D) | (D) |
| Essex County [MA] | 30 | 38 | (D) | (D) |
| Santa Barbara County [CA] | 25 | 24 | (B) | - |
| Sonoma County [CA] | 25 | 31 | 20 | 29 |
| Ventura County [CA] | 25 | 27 | 15 | 18 |
| Monterey County [CA] | 20 | 29 | (B) | - |
| Hillsborough County [NH] | 20 | 39 | (D) | (D) |
| Lake County [IL] | 15 | 22 | 15 | 22 |
| Anchorage Municipality [AK] | (D) | (D) | (B) | - |
| El Paso County [CO] | (D) | (D) | (B) | - |
| Fulton County [GA] | (D) | (D) | (D) | (D) |
| Hawaii County [HI] | (D) | (D) | (B) | - |
| Hampden County [MA] | (D) | (D) | (D) | (D) |
| Wayne County [MI] | (D) | (D) | (D) | (D) |
| Monmouth County [NJ] | (D) | (D) | (D) | (D) |
| Ocean County [NJ] | (D) | (D) | (B) | - |
| Bucks County [PA] | (D) | (D) | (D) | (D) |
| Chester County [PA] | (D) | (D) | (D) | (D) |
| Shelby County [TN] | (D) | (D) | (B) | - |
| Arlington County [VA] | (D) | (D) | (B) | - |
| Snohomish County [WA] | (D) | (D) | (D) | (D) |
| Dane County [WI] | (D) | (D) | (B) | - |
| City / Metropolitan area / CBSA | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| San Francisco-Oakland-Hayward [CA] | 7,175 | 970 | 4,685 | 698 |
| Los Angeles-Long Beach-Anaheim [CA] | 6,225 | 829 | 3,690 | 553 |
| New York-Newark-Jersey City [NY] | 5,365 | 846 | 3,185 | 596 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 2,090 | 570 | 925 | 346 |
| Indianapolis-Carmel-Anderson [IN] | 1,895 | 680 | 1,790 | 681 |
| Chicago-Naperville-Elgin [IL-IN] | 1,700 | 526 | 1,295 | 424 |
| Atlanta-Sandy Springs-Roswell [GA] | 1,390 | 565 | 930 | 389 |
| Houston-The Woodlands-Sugar Land [TX] | 1,230 | 528 | 940 | 462 |
| Dallas-Fort Worth-Arlington [TX] | 1,155 | 420 | 1,070 | 367 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 1,060 | 567 | 905 | 482 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 1,055 | 437 | 730 | 336 |
| Baltimore-Columbia-Towson [MD] | 900 | 447 | 490 | 342 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 900 | 375 | 725 | 334 |
| Tulsa [OK] | 875 | 252 | 710 | 220 |
| Portland-Vancouver-Hillsboro [OR-WA] | 870 | 511 | 680 | 378 |
| Seattle-Tacoma-Bellevue [WA] | 820 | 443 | 490 | 318 |
| Boston-Cambridge-Newton [MA-NH] | 710 | 317 | 595 | 306 |
| Jacksonville [FL] | 700 | 447 | 580 | 422 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 690 | 372 | 575 | 286 |
| Phoenix-Mesa-Scottsdale [AZ] | 640 | 350 | 455 | 266 |
| Denver-Aurora-Lakewood [CO] | 620 | 350 | 550 | 304 |
| San Jose-Sunnyvale-Santa Clara [CA] | 600 | 225 | 395 | 194 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 595 | 288 | 285 | 186 |
| Rochester [NY] | 575 | 299 | 545 | 299 |
| Riverside-San Bernardino-Ontario [CA] | 555 | 346 | 220 | 147 |
| Milwaukee-Waukesha-West Allis [WI] | 540 | 289 | 450 | 273 |
| Lancaster [PA] | 520 | 476 | 405 | 443 |
| Salt Lake City [UT] | 515 | 462 | 420 | 375 |
| San Diego-Carlsbad [CA] | 470 | 189 | 260 | 122 |
| Charlotte-Concord-Gastonia [NC-SC] | 400 | 229 | 310 | 195 |
| San Antonio-New Braunfels [TX] | 380 | 167 | 370 | 167 |
| Kansas City [MO-KS] | 360 | 216 | 360 | 216 |
| Oklahoma City [OK] | 355 | 236 | 290 | 192 |
| Austin-Round Rock [TX] | 350 | 181 | 295 | 158 |
| Omaha-Council Bluffs [NE-IA] | 345 | 180 | 315 | 175 |
| Louisville Jefferson County [KY] | 290 | 339 | 290 | 339 |
| Durham-Chapel Hill [NC] | 265 | 228 | 130 | 130 |
| Tampa-St. Petersburg-Clearwater [FL] | 245 | 174 | 130 | 138 |
| Sacramento-Roseville-Arden-Arcade [CA] | 235 | 148 | 145 | 113 |
| Lansing-East Lansing [MI] | 230 | 185 | 225 | 184 |
| Des Moines-West Des Moines [IA] | 220 | 140 | 195 | 141 |
| Las Vegas-Henderson-Paradise [NV] | 205 | 162 | 80 | 68 |
| Columbus [OH] | 200 | 128 | 140 | 88 |
| Richmond [VA] | 195 | 179 | 145 | 129 |
| Worcester [MA-CT] | 175 | 142 | 140 | 124 |
| Cincinnati [OH-KY-IN] | 160 | 134 | 105 | 100 |
| Grand Rapids-Wyoming [MI] | 150 | 132 | 145 | 132 |
| Pittsburgh [PA] | 150 | 109 | 125 | 103 |
| Urban Honolulu [HI] | 150 | 142 | 80 | 94 |
| Cape Coral-Fort Myers [FL] | 145 | 234 | 115 | 178 |
| Providence-Warwick [RI-MA] | 120 | 124 | 95 | 100 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 120 | 138 | 65 | 77 |
| Allentown-Bethlehem-Easton [PA-NJ] | 110 | 117 | 100 | 116 |
| Cleveland-Elyria [OH] | 110 | 82 | 90 | 80 |
| Hartford-West Hartford-East Hartford [CT] | 105 | 68 | 75 | 48 |
| Fresno [CA] | 100 | 106 | 100 | 106 |
| Orlando-Kissimmee-Sanford [FL] | 100 | 97 | 75 | 79 |
| Baton Rouge [LA] | 95 | 142 | 95 | 142 |
| Modesto [CA] | 95 | 150 | (D) | (D) |
| Bakersfield [CA] | 85 | 90 | 65 | 81 |
| St. Louis [MO-IL] | 85 | 89 | 85 | 89 |
| Albany-Schenectady-Troy [NY] | 80 | 91 | 80 | 91 |
| Raleigh [NC] | 80 | 72 | 55 | 40 |
| Albuquerque [NM] | 70 | 113 | 45 | 78 |
| Trenton [NJ] | 70 | 92 | (D) | (D) |
| Syracuse [NY] | 65 | 45 | 50 | 38 |
| Dayton [OH] | 60 | 74 | (B) | - |
| Detroit-Warren-Dearborn [MI] | 60 | 62 | 35 | 35 |
| Akron [OH] | 55 | 51 | 55 | 51 |
| New York-Newark-Jersey City [NY-NJ-PA] | 50 | 77 | 50 | 77 |
| Deltona-Daytona Beach-Ormond Beach [FL] | 45 | 85 | 20 | 40 |
| New Haven-Milford [CT] | 35 | 45 | (D) | (D) |
| Stockton-Lodi [CA] | 35 | 42 | (D) | (D) |
| Harrisburg-Carlisle [PA] | 25 | 40 | (D) | (D) |
| Oxnard-Thousand Oaks-Ventura [CA] | 25 | 27 | 15 | 18 |
| Portland-South Portland [ME] | 25 | 37 | (D) | (D) |
| Santa Maria-Santa Barbara [CA] | 25 | 24 | (B) | - |
| Santa Rosa [CA] | 25 | 31 | 20 | 29 |
| Manchester-Nashua [NH] | 20 | 39 | (D) | (D) |
| Salinas [CA] | 20 | 29 | (B) | - |
| Anchorage [AK] | (D) | (D) | (B) | - |
| Colorado Springs [CO] | (D) | (D) | (B) | - |
| Hilo [HI] | (D) | (D) | (B) | - |
| Madison [WI] | (D) | (D) | (B) | - |
| Memphis [TN-MS-AR] | (D) | (D) | (B) | - |
| Springfield [MA] | (D) | (D) | (D) | (D) |