| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 152,649 | 4,111 | 79,746 | 2,794 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| California | 46,434 | 2,607 | 26,035 | 1,597 |
| Texas | 9,871 | 955 | 4,781 | 639 |
| Florida | 9,870 | 1,098 | 5,072 | 646 |
| New York | 9,395 | 1,012 | 4,943 | 629 |
| Illinois | 7,266 | 823 | 3,818 | 567 |
| Virginia | 6,539 | 858 | 3,420 | 545 |
| Washington | 5,368 | 748 | 2,611 | 534 |
| Nevada | 5,168 | 840 | 3,029 | 592 |
| Maryland | 3,710 | 563 | 1,675 | 342 |
| Georgia | 3,186 | 769 | 1,247 | 364 |
| New Jersey | 2,920 | 517 | 1,447 | 367 |
| North Carolina | 2,794 | 522 | 1,245 | 333 |
| Massachusetts | 2,753 | 550 | 1,547 | 412 |
| Ohio | 2,590 | 492 | 1,261 | 298 |
| Arizona | 2,492 | 511 | 1,489 | 374 |
| Pennsylvania | 2,304 | 378 | 1,137 | 229 |
| Minnesota | 2,226 | 537 | 1,271 | 450 |
| Oregon | 2,130 | 482 | 1,131 | 283 |
| Colorado | 1,950 | 380 | 1,084 | 271 |
| Hawaii | 1,920 | 402 | 1,045 | 309 |
| Iowa | 1,679 | 594 | 831 | 302 |
| Missouri | 1,512 | 385 | 651 | 204 |
| Michigan | 1,447 | 281 | 788 | 155 |
| Tennessee | 1,445 | 365 | 635 | 188 |
| Connecticut | 1,401 | 418 | 753 | 322 |
| Utah | 1,137 | 329 | 434 | 167 |
| Alaska | 1,105 | 329 | 547 | 197 |
| Oklahoma | 991 | 261 | 545 | 185 |
| Indiana | 975 | 258 | 364 | 136 |
| South Carolina | 909 | 272 | 371 | 110 |
| Wisconsin | 859 | 219 | 438 | 152 |
| Kentucky | 843 | 279 | 466 | 214 |
| Nebraska | 835 | 295 | 392 | 148 |
| Alabama | 828 | 311 | 434 | 188 |
| Kansas | 663 | 185 | 383 | 142 |
| Rhode Island | 522 | 194 | 182 | 71 |
| Louisiana | 506 | 155 | 198 | 78 |
| Maine | 489 | 166 | 318 | 153 |
| West Virginia | 469 | 183 | 156 | 89 |
| New Mexico | 453 | 194 | 229 | 150 |
| Arkansas | 438 | 151 | 258 | 129 |
| Idaho | 412 | 152 | 139 | 74 |
| District of Columbia | 386 | 199 | 253 | 162 |
| New Hampshire | 237 | 116 | 92 | 70 |
| South Dakota | 224 | 137 | 76 | 54 |
| Mississippi | 197 | 151 | 127 | 98 |
| Montana | 185 | 106 | 113 | 83 |
| Delaware | 183 | 126 | 104 | 75 |
| Wyoming | 161 | 128 | 6 | 11 |
| Vermont | 142 | 69 | 123 | 69 |
| North Dakota | 130 | 80 | 52 | 60 |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Los Angeles County [CA] | 21,925 | 1,525 | 13,070 | 1,121 |
| Cook County [IL] | 4,734 | 706 | 2,566 | 495 |
| Clark County [NV] | 4,562 | 755 | 2,611 | 521 |
| Queens County [NY] | 3,680 | 737 | 2,247 | 474 |
| Orange County [CA] | 3,675 | 727 | 2,076 | 574 |
| Fairfax County [VA] | 3,166 | 561 | 1,662 | 405 |
| King County [WA] | 2,760 | 520 | 1,413 | 373 |
| San Bernardino County [CA] | 2,290 | 423 | 1,231 | 310 |
| San Diego County [CA] | 2,270 | 440 | 1,254 | 269 |
| Riverside County [CA] | 2,269 | 677 | 1,345 | 455 |
| San Francisco County [CA] | 2,183 | 611 | 1,405 | 456 |
| Harris County [TX] | 2,013 | 606 | 994 | 346 |
| Alameda County [CA] | 1,842 | 449 | 814 | 267 |
| Montgomery County [MD] | 1,815 | 417 | 910 | 288 |
| Maricopa County [AZ] | 1,598 | 379 | 1,007 | 288 |
| Santa Clara County [CA] | 1,587 | 372 | 710 | 189 |
| Honolulu County [HI] | 1,503 | 375 | 854 | 299 |
| Dallas County [TX] | 1,464 | 463 | 678 | 216 |
| Palm Beach County [FL] | 1,199 | 384 | 752 | 336 |
| Tarrant County [TX] | 1,155 | 348 | 551 | 194 |
| Middlesex County [MA] | 1,149 | 375 | 569 | 257 |
| Sacramento County [CA] | 1,101 | 271 | 540 | 174 |
| Contra Costa County [CA] | 1,065 | 416 | 462 | 216 |
| Orange County [FL] | 1,013 | 418 | 409 | 197 |
| Polk County [IA] | 986 | 523 | 404 | 205 |
| Fulton County [GA] | 908 | 592 | 217 | 148 |
| Bexar County [TX] | 881 | 247 | 364 | 119 |
| Kings County [NY] | 863 | 327 | 323 | 133 |
| Miami-Dade County [FL] | 859 | 328 | 419 | 178 |
| San Mateo County [CA] | 857 | 251 | 422 | 180 |
| Hillsborough County [FL] | 845 | 266 | 539 | 201 |
| Ventura County [CA] | 819 | 266 | 515 | 188 |
| New York County [NY] | 808 | 226 | 348 | 144 |
| Fresno County [CA] | 789 | 330 | 384 | 205 |
| Anchorage Municipality [AK] | 776 | 310 | 408 | 179 |
| Snohomish County [WA] | 742 | 267 | 338 | 166 |
| Bergen County [NJ] | 713 | 325 | 384 | 224 |
| Duval County [FL] | 712 | 256 | 248 | 144 |
| Franklin County [OH] | 698 | 261 | 435 | 176 |
| Collin County [TX] | 676 | 246 | 192 | 112 |
| Sonoma County [CA] | 674 | 358 | 257 | 164 |
| Davidson County [TN] | 657 | 270 | 208 | 112 |
| Hennepin County [MN] | 651 | 255 | 365 | 218 |
| Ramsey County [MN] | 624 | 377 | 364 | 333 |
| Pierce County [WA] | 599 | 242 | 279 | 183 |
| New Haven County [CT] | 598 | 352 | 388 | 292 |
| Arlington County [VA] | 595 | 292 | 269 | 144 |
| Philadelphia County [PA] | 581 | 223 | 350 | 166 |
| Broward County [FL] | 574 | 209 | 364 | 161 |
| Wake County [NC] | 557 | 280 | 188 | 146 |
| Multnomah County [OR] | 547 | 229 | 235 | 132 |
| Fort Bend County [TX] | 531 | 255 | 415 | 230 |
| Loudoun County [VA] | 523 | 267 | 295 | 185 |
| Pinellas County [FL] | 506 | 179 | 349 | 152 |
| Washoe County [NV] | 506 | 300 | 365 | 241 |
| Washington County [OR] | 503 | 193 | 282 | 131 |
| Travis County [TX] | 480 | 247 | 268 | 176 |
| Arapahoe County [CO] | 476 | 175 | 332 | 146 |
| Westchester County [NY] | 474 | 199 | 226 | 127 |
| DuPage County [IL] | 470 | 168 | 140 | 84 |
| Oakland County [MI] | 464 | 222 | 222 | 113 |
| Gwinnett County [GA] | 461 | 267 | 185 | 114 |
| Suffolk County [NY] | 461 | 362 | 207 | 115 |
| Suffolk County [MA] | 460 | 196 | 192 | 106 |
| Salt Lake County [UT] | 450 | 165 | 97 | 61 |
| Oklahoma County [OK] | 447 | 176 | 202 | 87 |
| DeKalb County [GA] | 432 | 249 | 254 | 215 |
| Prince George s County [MD] | 399 | 168 | 213 | 109 |
| Pima County [AZ] | 394 | 164 | 148 | 96 |
| District of Columbia [DC] | 386 | 199 | 253 | 162 |
| Denton County [TX] | 378 | 155 | 161 | 98 |
| Prince William County [VA] | 374 | 174 | 152 | 91 |
| Lake County [IL] | 368 | 236 | 163 | 100 |
| Baltimore County [MD] | 367 | 203 | 83 | 63 |
| Providence County [RI] | 347 | 172 | 164 | 69 |
| Norfolk County [MA] | 331 | 165 | 201 | 140 |
| Allegheny County [PA] | 319 | 119 | 173 | 87 |
| Santa Barbara County [CA] | 305 | 184 | 178 | 115 |
| Albany County [NY] | 305 | 197 | 222 | 166 |
| Fairfield County [CT] | 296 | 141 | 155 | 104 |
| St. Louis County [MO] | 296 | 162 | 120 | 95 |
| Erie County [NY] | 292 | 211 | 222 | 227 |
| Solano County [CA] | 286 | 134 | 177 | 86 |
| Kane County [IL] | 286 | 189 | 155 | 131 |
| San Joaquin County [CA] | 282 | 196 | 104 | 80 |
| Bronx County [NY] | 281 | 157 | 222 | 144 |
| Kern County [CA] | 277 | 153 | 106 | 73 |
| Bernalillo County [NM] | 276 | 179 | 130 | 138 |
| Mecklenburg County [NC] | 274 | 143 | 160 | 121 |
| Onondaga County [NY] | 261 | 125 | 96 | 74 |
| Jefferson County [KY] | 255 | 185 | 139 | 136 |
| Howard County [MD] | 252 | 156 | 87 | 63 |
| Milwaukee County [WI] | 244 | 148 | 148 | 89 |
| Hartford County [CT] | 239 | 192 | 112 | 99 |
| Rockland County [NY] | 234 | 133 | 14 | 23 |
| Nassau County [NY] | 233 | 126 | 180 | 116 |
| Worcester County [MA] | 232 | 159 | 182 | 144 |
| Hudson County [NJ] | 230 | 195 | 133 | 110 |
| Monterey County [CA] | 227 | 91 | 81 | 52 |
| Hamilton County [OH] | 227 | 121 | 114 | 64 |
| Montgomery County [PA] | 219 | 124 | 115 | 65 |
| Lee County [FL] | 218 | 162 | 105 | 82 |
| Orange County [NY] | 218 | 125 | 158 | 98 |
| Clark County [WA] | 218 | 157 | 162 | 116 |
| Monroe County [NY] | 210 | 105 | 69 | 53 |
| Placer County [CA] | 207 | 126 | 144 | 121 |
| Henrico County [VA] | 205 | 148 | 155 | 142 |
| Dane County [WI] | 204 | 104 | 73 | 46 |
| Burlington County [NJ] | 203 | 87 | 41 | 31 |
| Essex County [NJ] | 202 | 117 | 107 | 82 |
| Bucks County [PA] | 200 | 123 | 100 | 83 |
| Anne Arundel County [MD] | 199 | 129 | 59 | 38 |
| Denver County [CO] | 197 | 96 | 81 | 49 |
| Middlesex County [NJ] | 197 | 119 | 69 | 61 |
| Hawaii County [HI] | 192 | 121 | 59 | 40 |
| Cuyahoga County [OH] | 188 | 82 | 96 | 67 |
| Somerset County [NJ] | 184 | 131 | 120 | 118 |
| Yolo County [CA] | 177 | 100 | 153 | 87 |
| Morris County [NJ] | 156 | 146 | 101 | 94 |
| Baltimore city [MD] | 154 | 128 | 42 | 45 |
| Virginia Beach city [VA] | 153 | 106 | 129 | 98 |
| Will County [IL] | 151 | 108 | 92 | 90 |
| Macomb County [MI] | 145 | 90 | 85 | 59 |
| Union County [NJ] | 144 | 113 | 103 | 103 |
| Dakota County [MN] | 142 | 72 | 87 | 50 |
| Passaic County [NJ] | 140 | 106 | 126 | 101 |
| Johnson County [KS] | 134 | 76 | 79 | 47 |
| Maui County [HI] | 129 | 90 | 85 | 68 |
| Camden County [NJ] | 122 | 73 | 63 | 41 |
| Hampden County [MA] | 121 | 141 | 70 | 116 |
| Monmouth County [NJ] | 119 | 72 | 36 | 31 |
| Delaware County [PA] | 118 | 83 | 79 | 71 |
| Shelby County [TN] | 117 | 62 | 71 | 48 |
| Marion County [IN] | 113 | 69 | 59 | 42 |
| Guilford County [NC] | 108 | 70 | 90 | 62 |
| Stanislaus County [CA] | 104 | 96 | (B) | - |
| Bristol County [MA] | 100 | 105 | 85 | 105 |
| Cobb County [GA] | 97 | 59 | 75 | 62 |
| Plymouth County [MA] | 93 | 62 | 70 | 69 |
| El Paso County [CO] | 92 | 73 | 43 | 34 |
| Essex County [MA] | 82 | 65 | 23 | 28 |
| Atlantic County [NJ] | 79 | 75 | 28 | 35 |
| New Castle County [DE] | 76 | 51 | 42 | 40 |
| Collier County [FL] | 74 | 58 | 5 | 9 |
| Wayne County [MI] | 73 | 41 | 32 | 29 |
| Mercer County [NJ] | 72 | 64 | 13 | 21 |
| Washtenaw County [MI] | 71 | 45 | 40 | 33 |
| Chester County [PA] | 69 | 48 | 30 | 31 |
| Jefferson Parish [LA] | 59 | 60 | 31 | 45 |
| Richmond County [NY] | 46 | 63 | 46 | 63 |
| Ocean County [NJ] | 33 | 24 | 17 | 19 |
| Hillsborough County [NH] | 28 | 33 | 14 | 23 |
| Lancaster County [PA] | 11 | 16 | 11 | 16 |
| City / Metropolitan area / CBSA | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Los Angeles-Long Beach-Anaheim [CA] | 25,600 | 1,698 | 15,146 | 1,259 |
| New York-Newark-Jersey City [NY] | 9,706 | 1,125 | 5,292 | 651 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 8,060 | 917 | 4,205 | 604 |
| Chicago-Naperville-Elgin [IL-IN] | 6,448 | 814 | 3,425 | 532 |
| San Francisco-Oakland-Hayward [CA] | 6,140 | 898 | 3,165 | 589 |
| Las Vegas-Henderson-Paradise [NV] | 4,562 | 755 | 2,611 | 521 |
| Riverside-San Bernardino-Ontario [CA] | 4,559 | 808 | 2,576 | 492 |
| Seattle-Tacoma-Bellevue [WA] | 4,101 | 624 | 2,030 | 472 |
| Dallas-Fort Worth-Arlington [TX] | 3,800 | 590 | 1,633 | 325 |
| Houston-The Woodlands-Sugar Land [TX] | 2,804 | 699 | 1,477 | 460 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 2,632 | 522 | 1,535 | 383 |
| Atlanta-Sandy Springs-Roswell [GA] | 2,499 | 727 | 988 | 313 |
| San Diego-Carlsbad [CA] | 2,270 | 440 | 1,254 | 269 |
| Boston-Cambridge-Newton [MA-NH] | 2,258 | 483 | 1,088 | 315 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 1,734 | 495 | 959 | 422 |
| Tampa-St. Petersburg-Clearwater [FL] | 1,690 | 371 | 1,164 | 289 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 1,682 | 295 | 872 | 211 |
| Phoenix-Mesa-Scottsdale [AZ] | 1,642 | 384 | 1,051 | 295 |
| Portland-Vancouver-Hillsboro [OR-WA] | 1,627 | 402 | 885 | 248 |
| San Jose-Sunnyvale-Santa Clara [CA] | 1,587 | 372 | 710 | 189 |
| Sacramento-Roseville-Arden-Arcade [CA] | 1,554 | 319 | 852 | 213 |
| Urban Honolulu [HI] | 1,503 | 375 | 854 | 299 |
| Denver-Aurora-Lakewood [CO] | 1,374 | 317 | 822 | 246 |
| Orlando-Kissimmee-Sanford [FL] | 1,294 | 421 | 488 | 202 |
| Baltimore-Columbia-Towson [MD] | 1,197 | 339 | 413 | 146 |
| Des Moines-West Des Moines [IA] | 1,076 | 533 | 404 | 205 |
| San Antonio-New Braunfels [TX] | 1,026 | 273 | 405 | 127 |
| St. Louis [MO-IL] | 936 | 264 | 380 | 147 |
| Austin-Round Rock [TX] | 932 | 300 | 520 | 209 |
| Columbus [OH] | 837 | 267 | 464 | 176 |
| Oxnard-Thousand Oaks-Ventura [CA] | 819 | 266 | 515 | 188 |
| Anchorage [AK] | 815 | 312 | 412 | 179 |
| Jacksonville [FL] | 808 | 278 | 267 | 149 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 803 | 291 | 262 | 133 |
| Fresno [CA] | 789 | 330 | 384 | 205 |
| Detroit-Warren-Dearborn [MI] | 727 | 247 | 372 | 129 |
| Santa Rosa [CA] | 674 | 358 | 257 | 164 |
| Oklahoma City [OK] | 626 | 227 | 345 | 146 |
| Providence-Warwick [RI-MA] | 622 | 219 | 267 | 123 |
| New Haven-Milford [CT] | 598 | 352 | 388 | 292 |
| Raleigh [NC] | 588 | 277 | 198 | 147 |
| Dayton [OH] | 583 | 348 | 261 | 184 |
| Reno [NV] | 518 | 298 | 365 | 241 |
| Omaha-Council Bluffs [NE-IA] | 469 | 183 | 201 | 85 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 463 | 181 | 253 | 130 |
| Salt Lake City [UT] | 459 | 165 | 100 | 62 |
| Albany-Schenectady-Troy [NY] | 432 | 205 | 253 | 170 |
| Hartford-West Hartford-East Hartford [CT] | 429 | 228 | 157 | 106 |
| Charlotte-Concord-Gastonia [NC-SC] | 395 | 176 | 281 | 161 |
| Tucson [AZ] | 394 | 164 | 148 | 96 |
| Cincinnati [OH-KY-IN] | 374 | 159 | 132 | 65 |
| Kansas City [MO-KS] | 371 | 132 | 226 | 106 |
| Pittsburgh [PA] | 361 | 120 | 192 | 90 |
| Richmond [VA] | 349 | 171 | 216 | 149 |
| Albuquerque [NM] | 339 | 186 | 174 | 145 |
| Deltona-Daytona Beach-Ormond Beach [FL] | 338 | 156 | 140 | 90 |
| Rochester [NY] | 316 | 162 | 110 | 66 |
| Syracuse [NY] | 313 | 134 | 96 | 74 |
| Louisville Jefferson County [KY] | 306 | 193 | 164 | 137 |
| Santa Maria-Santa Barbara [CA] | 305 | 184 | 178 | 115 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 302 | 212 | 232 | 227 |
| Bridgeport-Stamford-Norwalk [CT] | 296 | 141 | 155 | 104 |
| Milwaukee-Waukesha-West Allis [WI] | 289 | 163 | 151 | 89 |
| Vallejo-Fairfield [CA] | 286 | 134 | 177 | 86 |
| Stockton-Lodi [CA] | 282 | 196 | 104 | 80 |
| Bakersfield [CA] | 277 | 153 | 106 | 73 |
| Springfield [MA] | 243 | 193 | 169 | 147 |
| Akron [OH] | 242 | 146 | 128 | 94 |
| Cleveland-Elyria [OH] | 234 | 82 | 132 | 69 |
| Worcester [MA-CT] | 232 | 159 | 182 | 144 |
| Salinas [CA] | 227 | 91 | 81 | 52 |
| Durham-Chapel Hill [NC] | 219 | 135 | 100 | 106 |
| Cape Coral-Fort Myers [FL] | 218 | 162 | 105 | 82 |
| New Orleans-Metairie [LA] | 209 | 123 | 63 | 60 |
| Madison [WI] | 204 | 104 | 73 | 46 |
| Indianapolis-Carmel-Anderson [IN] | 198 | 139 | 59 | 42 |
| Hilo [HI] | 192 | 121 | 59 | 40 |
| New York-Newark-Jersey City [NY-NJ-PA] | 184 | 116 | 73 | 73 |
| Greensboro-High Point [NC] | 144 | 91 | 126 | 84 |
| Kahului-Wailuku-Lahaina [HI] | 129 | 90 | 85 | 68 |
| Spokane-Spokane Valley [WA] | 128 | 75 | 47 | 33 |
| Grand Rapids-Wyoming [MI] | 126 | 105 | 74 | 56 |
| Portland-South Portland [ME] | 125 | 82 | 58 | 61 |
| Allentown-Bethlehem-Easton [PA-NJ] | 117 | 87 | 32 | 30 |
| Memphis [TN-MS-AR] | 117 | 62 | 71 | 48 |
| Lansing-East Lansing [MI] | 105 | 60 | 52 | 37 |
| Modesto [CA] | 104 | 96 | (B) | - |
| Harrisburg-Carlisle [PA] | 95 | 69 | 51 | 45 |
| Tulsa [OK] | 94 | 47 | 52 | 37 |
| Baton Rouge [LA] | 93 | 60 | 33 | 28 |
| Colorado Springs [CO] | 92 | 73 | 43 | 34 |
| Atlantic City-Hammonton [NJ] | 79 | 75 | 28 | 35 |
| Naples-Immokalee-Marco Island [FL] | 74 | 58 | 5 | 9 |
| Trenton [NJ] | 72 | 64 | 13 | 21 |
| Ann Arbor [MI] | 71 | 45 | 40 | 33 |
| Lafayette [LA] | 29 | 32 | 17 | 28 |
| Manchester-Nashua [NH] | 28 | 33 | 14 | 23 |
| Lancaster [PA] | 11 | 16 | 11 | 16 |