| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 128,339 | 3,694 | 13,312 | 901 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| California | 23,859 | 1,601 | 2,476 | 412 |
| Florida | 9,505 | 778 | 1,335 | 327 |
| New York | 9,210 | 785 | 1,040 | 297 |
| Washington | 8,496 | 789 | 791 | 204 |
| Minnesota | 7,965 | 403 | 877 | 118 |
| Texas | 6,568 | 878 | 792 | 255 |
| Massachusetts | 4,027 | 571 | 234 | 78 |
| Illinois | 3,508 | 456 | 444 | 144 |
| Pennsylvania | 3,415 | 663 | 516 | 173 |
| Wisconsin | 3,402 | 436 | 388 | 99 |
| New Jersey | 3,222 | 473 | 232 | 103 |
| Virginia | 3,175 | 533 | 318 | 119 |
| Colorado | 2,881 | 483 | 273 | 104 |
| Oregon | 2,650 | 515 | 248 | 148 |
| Arizona | 2,562 | 360 | 214 | 82 |
| North Carolina | 2,545 | 554 | 146 | 63 |
| Utah | 2,520 | 459 | 342 | 115 |
| Maryland | 2,262 | 416 | 87 | 48 |
| Georgia | 2,236 | 400 | 186 | 103 |
| Connecticut | 2,233 | 352 | 208 | 83 |
| Michigan | 2,088 | 329 | 195 | 66 |
| Ohio | 1,675 | 404 | 83 | 53 |
| North Dakota | 1,673 | 196 | 188 | 54 |
| Nevada | 1,313 | 292 | 105 | 62 |
| Iowa | 1,269 | 251 | 120 | 56 |
| Montana | 1,036 | 239 | 150 | 73 |
| Tennessee | 926 | 219 | 105 | 55 |
| South Carolina | 922 | 261 | 39 | 35 |
| Indiana | 876 | 330 | 44 | 35 |
| Missouri | 853 | 235 | 93 | 68 |
| District of Columbia | 816 | 266 | 81 | 113 |
| Hawaii | 813 | 210 | 160 | 130 |
| Alaska | 718 | 196 | 90 | 50 |
| Idaho | 707 | 178 | 94 | 49 |
| Kentucky | 658 | 240 | 16 | 19 |
| South Dakota | 598 | 127 | 107 | 52 |
| Kansas | 567 | 208 | 49 | 47 |
| Louisiana | 525 | 193 | 58 | 43 |
| Rhode Island | 523 | 192 | 24 | 29 |
| New Mexico | 491 | 193 | 46 | 37 |
| New Hampshire | 474 | 148 | 7 | 11 |
| Maine | 470 | 115 | 39 | 35 |
| Nebraska | 447 | 104 | 107 | 62 |
| Vermont | 335 | 130 | 21 | 14 |
| Oklahoma | 290 | 121 | 21 | 16 |
| Alabama | 286 | 128 | 6 | 9 |
| Arkansas | 212 | 99 | 14 | 25 |
| Mississippi | 194 | 93 | 56 | 52 |
| Wyoming | 192 | 88 | 19 | 32 |
| Delaware | 95 | 57 | (B) | - |
| West Virginia | 56 | 39 | 28 | 32 |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Los Angeles County [CA] | 5,263 | 587 | 579 | 203 |
| King County [WA] | 4,317 | 656 | 314 | 130 |
| New York County [NY] | 2,691 | 557 | 127 | 68 |
| San Diego County [CA] | 2,630 | 562 | 241 | 100 |
| Orange County [CA] | 2,056 | 579 | 287 | 166 |
| Santa Clara County [CA] | 1,802 | 435 | 194 | 116 |
| Hennepin County [MN] | 1,778 | 239 | 219 | 77 |
| Harris County [TX] | 1,679 | 501 | 338 | 208 |
| Maricopa County [AZ] | 1,672 | 287 | 147 | 68 |
| Cook County [IL] | 1,541 | 261 | 220 | 119 |
| Palm Beach County [FL] | 1,502 | 385 | 159 | 92 |
| Broward County [FL] | 1,436 | 296 | 154 | 93 |
| Kings County [NY] | 1,400 | 294 | 210 | 95 |
| Fairfield County [CT] | 1,205 | 282 | 73 | 54 |
| Middlesex County [MA] | 1,180 | 263 | 62 | 36 |
| Alameda County [CA] | 1,125 | 231 | 34 | 32 |
| Santa Barbara County [CA] | 1,098 | 353 | 119 | 92 |
| Salt Lake County [UT] | 1,091 | 288 | 200 | 92 |
| Clark County [NV] | 1,066 | 294 | 74 | 56 |
| San Francisco County [CA] | 960 | 304 | 67 | 62 |
| Pierce County [WA] | 936 | 273 | 141 | 83 |
| Snohomish County [WA] | 927 | 245 | 86 | 51 |
| Montgomery County [MD] | 877 | 259 | 45 | 40 |
| San Mateo County [CA] | 864 | 262 | 152 | 156 |
| Miami-Dade County [FL] | 859 | 283 | 109 | 94 |
| Suffolk County [NY] | 843 | 288 | 285 | 245 |
| Fairfax County [VA] | 828 | 278 | 18 | 24 |
| District of Columbia [DC] | 816 | 266 | 81 | 113 |
| Contra Costa County [CA] | 812 | 233 | 28 | 26 |
| Westchester County [NY] | 795 | 278 | 69 | 60 |
| Riverside County [CA] | 791 | 188 | 71 | 55 |
| Lee County [FL] | 722 | 216 | 164 | 106 |
| Norfolk County [MA] | 662 | 231 | 30 | 27 |
| Collin County [TX] | 655 | 337 | 16 | 25 |
| Ventura County [CA] | 646 | 196 | 114 | 61 |
| Travis County [TX] | 624 | 238 | 48 | 52 |
| Dallas County [TX] | 618 | 179 | 64 | 68 |
| San Bernardino County [CA] | 601 | 234 | 94 | 63 |
| Mecklenburg County [NC] | 552 | 331 | 11 | 20 |
| Queens County [NY] | 549 | 197 | 14 | 18 |
| Multnomah County [OR] | 536 | 173 | 27 | 32 |
| Nassau County [NY] | 522 | 163 | 87 | 53 |
| Washington County [OR] | 515 | 348 | 29 | 32 |
| Essex County [MA] | 508 | 162 | 44 | 43 |
| Fort Bend County [TX] | 502 | 279 | 28 | 35 |
| Sacramento County [CA] | 493 | 136 | 42 | 37 |
| Ramsey County [MN] | 490 | 197 | 48 | 38 |
| Dane County [WI] | 490 | 198 | 93 | 55 |
| Dakota County [MN] | 486 | 141 | 11 | 12 |
| Denver County [CO] | 465 | 204 | 27 | 36 |
| Philadelphia County [PA] | 460 | 209 | 117 | 93 |
| Worcester County [MA] | 458 | 166 | 38 | 34 |
| Honolulu County [HI] | 452 | 152 | 119 | 124 |
| Morris County [NJ] | 449 | 157 | 24 | 31 |
| Fulton County [GA] | 448 | 183 | 22 | 37 |
| Hillsborough County [FL] | 447 | 195 | 109 | 63 |
| Fresno County [CA] | 446 | 151 | 51 | 36 |
| Pinellas County [FL] | 444 | 176 | 67 | 48 |
| Pima County [AZ] | 430 | 175 | 49 | 41 |
| Sonoma County [CA] | 417 | 154 | 26 | 39 |
| Bergen County [NJ] | 407 | 143 | 14 | 23 |
| Wake County [NC] | 398 | 223 | 33 | 33 |
| Howard County [MD] | 384 | 201 | 7 | 12 |
| DuPage County [IL] | 382 | 113 | 39 | 28 |
| Arapahoe County [CO] | 381 | 176 | 22 | 30 |
| Mercer County [NJ] | 380 | 208 | (B) | - |
| Lake County [IL] | 379 | 133 | 27 | 28 |
| Montgomery County [PA] | 371 | 150 | 23 | 22 |
| Suffolk County [MA] | 367 | 127 | (B) | - |
| Anchorage Municipality [AK] | 359 | 155 | 50 | 39 |
| Orange County [FL] | 345 | 124 | 38 | 30 |
| Tarrant County [TX] | 335 | 132 | (B) | - |
| Chester County [PA] | 329 | 164 | 63 | 71 |
| Washtenaw County [MI] | 307 | 169 | 7 | 12 |
| Baltimore County [MD] | 306 | 175 | 23 | 25 |
| Providence County [RI] | 296 | 108 | 9 | 17 |
| Cobb County [GA] | 287 | 132 | (B) | - |
| St. Louis County [MO] | 287 | 161 | 24 | 27 |
| Essex County [NJ] | 284 | 135 | 32 | 35 |
| Placer County [CA] | 280 | 129 | (B) | - |
| Somerset County [NJ] | 279 | 139 | 30 | 48 |
| DeKalb County [GA] | 278 | 125 | (B) | - |
| Milwaukee County [WI] | 277 | 152 | 8 | 16 |
| Middlesex County [NJ] | 273 | 120 | 28 | 33 |
| Clark County [WA] | 273 | 157 | 41 | 45 |
| Delaware County [PA] | 268 | 164 | 39 | 42 |
| Hartford County [CT] | 260 | 107 | 31 | 32 |
| Oakland County [MI] | 259 | 121 | (B) | - |
| Maui County [HI] | 247 | 144 | 32 | 30 |
| Cuyahoga County [OH] | 246 | 122 | 17 | 23 |
| Franklin County [OH] | 245 | 216 | (B) | - |
| El Paso County [CO] | 242 | 84 | 36 | 35 |
| Collier County [FL] | 241 | 128 | 35 | 38 |
| Bexar County [TX] | 241 | 118 | 7 | 13 |
| Prince William County [VA] | 240 | 136 | 25 | 26 |
| Arlington County [VA] | 237 | 151 | 47 | 50 |
| Plymouth County [MA] | 236 | 99 | 7 | 12 |
| Rockland County [NY] | 233 | 112 | 48 | 34 |
| Virginia Beach city [VA] | 229 | 146 | (B) | - |
| Allegheny County [PA] | 228 | 103 | 16 | 27 |
| Richmond County [NY] | 227 | 89 | 35 | 42 |
| Guilford County [NC] | 227 | 109 | (B) | - |
| Jefferson County [KY] | 223 | 182 | (B) | - |
| Monmouth County [NJ] | 210 | 96 | 24 | 38 |
| Bernalillo County [NM] | 210 | 161 | 6 | 14 |
| Bucks County [PA] | 199 | 77 | 53 | 41 |
| Bristol County [MA] | 198 | 115 | (B) | - |
| Kane County [IL] | 197 | 207 | 27 | 41 |
| Denton County [TX] | 196 | 124 | 44 | 42 |
| Hillsborough County [NH] | 193 | 97 | (B) | - |
| Hudson County [NJ] | 190 | 93 | (B) | - |
| Solano County [CA] | 182 | 91 | 10 | 16 |
| Stanislaus County [CA] | 181 | 95 | (B) | - |
| Monterey County [CA] | 179 | 112 | 15 | 26 |
| Erie County [NY] | 178 | 130 | 17 | 22 |
| New Haven County [CT] | 176 | 84 | 15 | 24 |
| Washoe County [NV] | 174 | 106 | 8 | 13 |
| Wayne County [MI] | 171 | 69 | 35 | 31 |
| San Joaquin County [CA] | 165 | 96 | (B) | - |
| Gwinnett County [GA] | 154 | 111 | (B) | - |
| Orange County [NY] | 149 | 94 | 7 | 10 |
| Lancaster County [PA] | 146 | 84 | (B) | - |
| Union County [NJ] | 142 | 102 | 11 | 17 |
| Davidson County [TN] | 137 | 81 | (B) | - |
| Marion County [IN] | 135 | 170 | (B) | - |
| Onondaga County [NY] | 128 | 78 | 16 | 18 |
| Jefferson Parish [LA] | 122 | 65 | 33 | 33 |
| Ocean County [NJ] | 122 | 77 | 19 | 20 |
| Henrico County [VA] | 118 | 102 | 22 | 34 |
| Shelby County [TN] | 113 | 63 | (B) | - |
| Yolo County [CA] | 110 | 59 | (B) | - |
| Kern County [CA] | 109 | 67 | (B) | - |
| Johnson County [KS] | 109 | 71 | 12 | 18 |
| Polk County [IA] | 107 | 60 | 20 | 26 |
| Hamilton County [OH] | 107 | 70 | (B) | - |
| Anne Arundel County [MD] | 103 | 72 | (B) | - |
| Duval County [FL] | 102 | 75 | 33 | 31 |
| Hawaii County [HI] | 101 | 65 | 9 | 14 |
| Camden County [NJ] | 101 | 74 | (B) | - |
| Prince George s County [MD] | 99 | 51 | 10 | 16 |
| Passaic County [NJ] | 96 | 52 | (B) | - |
| Baltimore city [MD] | 94 | 69 | (B) | - |
| Will County [IL] | 93 | 84 | (B) | - |
| Loudoun County [VA] | 90 | 71 | 10 | 15 |
| Burlington County [NJ] | 85 | 47 | 24 | 26 |
| Monroe County [NY] | 78 | 50 | 18 | 27 |
| New Castle County [DE] | 69 | 54 | (B) | - |
| Bronx County [NY] | 65 | 44 | (B) | - |
| Hampden County [MA] | 60 | 41 | 13 | 19 |
| Macomb County [MI] | 56 | 42 | (B) | - |
| Atlantic County [NJ] | 51 | 36 | 9 | 10 |
| Oklahoma County [OK] | 48 | 35 | 7 | 10 |
| Albany County [NY] | 38 | 32 | (B) | - |
| Navajo County [AZ] | 34 | 36 | (B) | - |
| San Juan County [NM] | 15 | 26 | 15 | 26 |
| 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] | 10,146 | 902 | 1,079 | 310 |
| Los Angeles-Long Beach-Anaheim [CA] | 7,319 | 833 | 866 | 258 |
| Seattle-Tacoma-Bellevue [WA] | 6,180 | 786 | 541 | 161 |
| San Francisco-Oakland-Hayward [CA] | 4,909 | 633 | 488 | 248 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 4,188 | 386 | 446 | 105 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 3,797 | 586 | 422 | 185 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 3,755 | 536 | 301 | 151 |
| Boston-Cambridge-Newton [MA-NH] | 3,060 | 490 | 150 | 59 |
| Chicago-Naperville-Elgin [IL-IN] | 2,998 | 452 | 334 | 135 |
| San Diego-Carlsbad [CA] | 2,630 | 562 | 241 | 100 |
| Houston-The Woodlands-Sugar Land [TX] | 2,567 | 588 | 395 | 214 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 1,927 | 382 | 319 | 120 |
| Dallas-Fort Worth-Arlington [TX] | 1,859 | 408 | 147 | 93 |
| San Jose-Sunnyvale-Santa Clara [CA] | 1,802 | 435 | 194 | 116 |
| Portland-Vancouver-Hillsboro [OR-WA] | 1,731 | 464 | 134 | 74 |
| Phoenix-Mesa-Scottsdale [AZ] | 1,721 | 294 | 164 | 69 |
| Atlanta-Sandy Springs-Roswell [GA] | 1,656 | 339 | 114 | 84 |
| Denver-Aurora-Lakewood [CO] | 1,492 | 336 | 91 | 56 |
| Riverside-San Bernardino-Ontario [CA] | 1,392 | 286 | 165 | 90 |
| Bridgeport-Stamford-Norwalk [CT] | 1,205 | 282 | 73 | 54 |
| Tampa-St. Petersburg-Clearwater [FL] | 1,179 | 305 | 203 | 80 |
| Salt Lake City [UT] | 1,100 | 289 | 200 | 92 |
| Santa Maria-Santa Barbara [CA] | 1,098 | 353 | 119 | 92 |
| Las Vegas-Henderson-Paradise [NV] | 1,066 | 294 | 74 | 56 |
| Austin-Round Rock [TX] | 1,061 | 317 | 48 | 52 |
| Baltimore-Columbia-Towson [MD] | 953 | 293 | 30 | 28 |
| Sacramento-Roseville-Arden-Arcade [CA] | 933 | 197 | 42 | 37 |
| Cape Coral-Fort Myers [FL] | 722 | 216 | 164 | 106 |
| Providence-Warwick [RI-MA] | 721 | 232 | 24 | 29 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 703 | 235 | 57 | 40 |
| Charlotte-Concord-Gastonia [NC-SC] | 691 | 362 | 11 | 20 |
| New York-Newark-Jersey City [NY-NJ-PA] | 679 | 239 | 78 | 61 |
| Orlando-Kissimmee-Sanford [FL] | 661 | 182 | 81 | 61 |
| Oxnard-Thousand Oaks-Ventura [CA] | 646 | 196 | 114 | 61 |
| Detroit-Warren-Dearborn [MI] | 636 | 172 | 49 | 38 |
| Milwaukee-Waukesha-West Allis [WI] | 605 | 208 | 28 | 30 |
| Madison [WI] | 574 | 206 | 98 | 55 |
| Worcester [MA-CT] | 508 | 189 | 38 | 34 |
| St. Louis [MO-IL] | 482 | 198 | 34 | 32 |
| Allentown-Bethlehem-Easton [PA-NJ] | 460 | 201 | 47 | 44 |
| Indianapolis-Carmel-Anderson [IN] | 456 | 275 | 10 | 18 |
| Urban Honolulu [HI] | 452 | 152 | 119 | 124 |
| Hartford-West Hartford-East Hartford [CT] | 448 | 149 | 77 | 53 |
| Fresno [CA] | 446 | 151 | 51 | 36 |
| Tucson [AZ] | 430 | 175 | 49 | 41 |
| Raleigh [NC] | 417 | 229 | 33 | 33 |
| Santa Rosa [CA] | 417 | 154 | 26 | 39 |
| Cincinnati [OH-KY-IN] | 404 | 236 | (B) | - |
| Anchorage [AK] | 397 | 151 | 50 | 39 |
| Deltona-Daytona Beach-Ormond Beach [FL] | 395 | 217 | 58 | 69 |
| Trenton [NJ] | 380 | 208 | (B) | - |
| Jacksonville [FL] | 360 | 196 | 105 | 124 |
| Columbus [OH] | 345 | 240 | (B) | - |
| Spokane-Spokane Valley [WA] | 329 | 120 | 31 | 37 |
| Louisville Jefferson County [KY] | 315 | 193 | (B) | - |
| Pittsburgh [PA] | 314 | 118 | 31 | 33 |
| Ann Arbor [MI] | 307 | 169 | 7 | 12 |
| Cleveland-Elyria [OH] | 304 | 120 | 17 | 23 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 297 | 125 | 15 | 18 |
| Richmond [VA] | 289 | 162 | 33 | 39 |
| New Orleans-Metairie [LA] | 278 | 126 | 58 | 43 |
| Kansas City [MO-KS] | 260 | 98 | 59 | 53 |
| San Antonio-New Braunfels [TX] | 251 | 118 | 7 | 13 |
| Kahului-Wailuku-Lahaina [HI] | 247 | 144 | 32 | 30 |
| Colorado Springs [CO] | 242 | 84 | 36 | 35 |
| Naples-Immokalee-Marco Island [FL] | 241 | 128 | 35 | 38 |
| Durham-Chapel Hill [NC] | 234 | 128 | 16 | 25 |
| Grand Rapids-Wyoming [MI] | 229 | 104 | 10 | 12 |
| Albany-Schenectady-Troy [NY] | 227 | 93 | 11 | 13 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 227 | 137 | 23 | 24 |
| Greensboro-High Point [NC] | 227 | 109 | (B) | - |
| Rochester [NY] | 223 | 113 | 32 | 37 |
| Albuquerque [NM] | 210 | 161 | 6 | 14 |
| Omaha-Council Bluffs [NE-IA] | 210 | 78 | 40 | 42 |
| Dayton [OH] | 207 | 121 | 15 | 22 |
| Manchester-Nashua [NH] | 193 | 97 | (B) | - |
| Vallejo-Fairfield [CA] | 182 | 91 | 10 | 16 |
| Modesto [CA] | 181 | 95 | (B) | - |
| Salinas [CA] | 179 | 112 | 15 | 26 |
| New Haven-Milford [CT] | 176 | 84 | 15 | 24 |
| Reno [NV] | 174 | 106 | 8 | 13 |
| Des Moines-West Des Moines [IA] | 171 | 80 | 37 | 37 |
| Stockton-Lodi [CA] | 165 | 96 | (B) | - |
| Portland-South Portland [ME] | 156 | 73 | 30 | 34 |
| Lancaster [PA] | 146 | 84 | (B) | - |
| Syracuse [NY] | 135 | 78 | 16 | 18 |
| Memphis [TN-MS-AR] | 125 | 66 | 12 | 18 |
| Springfield [MA] | 118 | 80 | 22 | 25 |
| Tulsa [OK] | 113 | 77 | 8 | 13 |
| Akron [OH] | 112 | 62 | 18 | 28 |
| Bakersfield [CA] | 109 | 67 | (B) | - |
| Lansing-East Lansing [MI] | 107 | 59 | 13 | 16 |
| Hilo [HI] | 101 | 65 | 9 | 14 |
| Oklahoma City [OK] | 98 | 62 | 7 | 10 |
| Baton Rouge [LA] | 93 | 62 | (B) | - |
| Harrisburg-Carlisle [PA] | 54 | 39 | (B) | - |
| Atlantic City-Hammonton [NJ] | 51 | 36 | 9 | 10 |
| Show Low [AZ] | 34 | 36 | (B) | - |
| Lafayette [LA] | 16 | 27 | (B) | - |
| Farmington [NM] | 15 | 26 | 15 | 26 |