| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 86,406 | 2,446 | 25,983 | 1,374 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| California | 13,236 | 1,035 | 4,003 | 499 |
| New York | 12,314 | 1,055 | 4,727 | 579 |
| Florida | 10,658 | 975 | 3,836 | 647 |
| Ohio | 7,144 | 637 | 1,794 | 250 |
| New Jersey | 6,296 | 633 | 2,280 | 356 |
| Pennsylvania | 3,857 | 466 | 930 | 205 |
| Illinois | 2,928 | 434 | 1,137 | 290 |
| Texas | 2,902 | 539 | 693 | 220 |
| Connecticut | 2,764 | 459 | 780 | 223 |
| Michigan | 2,510 | 358 | 589 | 151 |
| Maryland | 2,057 | 411 | 518 | 201 |
| Nevada | 1,792 | 436 | 574 | 213 |
| Massachusetts | 1,518 | 340 | 324 | 135 |
| Arizona | 1,499 | 293 | 388 | 141 |
| Virginia | 1,486 | 306 | 311 | 143 |
| Washington | 1,410 | 318 | 423 | 122 |
| Colorado | 1,322 | 280 | 302 | 147 |
| North Carolina | 1,262 | 459 | 119 | 59 |
| Indiana | 995 | 231 | 162 | 73 |
| Georgia | 956 | 249 | 245 | 112 |
| Missouri | 874 | 257 | 266 | 146 |
| Oregon | 859 | 238 | 289 | 132 |
| South Carolina | 593 | 216 | 119 | 77 |
| Wisconsin | 544 | 136 | 155 | 65 |
| Tennessee | 512 | 216 | 126 | 97 |
| Minnesota | 467 | 155 | 44 | 45 |
| New Mexico | 375 | 153 | 127 | 93 |
| Utah | 314 | 185 | 25 | 23 |
| Louisiana | 303 | 190 | 53 | 38 |
| Kentucky | 299 | 119 | 62 | 50 |
| District of Columbia | 275 | 116 | 33 | 35 |
| New Hampshire | 187 | 120 | 13 | 20 |
| West Virginia | 179 | 100 | 35 | 35 |
| Oklahoma | 176 | 86 | 46 | 30 |
| Kansas | 172 | 88 | 64 | 42 |
| Rhode Island | 161 | 111 | 65 | 64 |
| Alabama | 145 | 76 | 30 | 43 |
| Delaware | 141 | 110 | 68 | 88 |
| Hawaii | 139 | 81 | 27 | 33 |
| Idaho | 108 | 71 | 38 | 46 |
| Arkansas | 94 | 77 | 20 | 24 |
| North Dakota | 94 | 92 | 24 | 27 |
| Alaska | 90 | 77 | 21 | 30 |
| Iowa | 82 | 46 | 44 | 34 |
| Wyoming | 76 | 66 | 9 | 15 |
| Montana | 57 | 35 | (B) | - |
| Vermont | 55 | 36 | 4 | 5 |
| South Dakota | 42 | 50 | 13 | 15 |
| Mississippi | 32 | 25 | 6 | 12 |
| Nebraska | 30 | 31 | 18 | 29 |
| Maine | 25 | 16 | 4 | 5 |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Los Angeles County [CA] | 5,218 | 716 | 1,721 | 348 |
| Kings County [NY] | 3,128 | 518 | 1,806 | 371 |
| Cuyahoga County [OH] | 2,870 | 412 | 754 | 148 |
| Queens County [NY] | 2,632 | 383 | 1,112 | 250 |
| Broward County [FL] | 1,947 | 388 | 726 | 188 |
| Clark County [NV] | 1,590 | 424 | 493 | 193 |
| Cook County [IL] | 1,518 | 327 | 602 | 216 |
| New York County [NY] | 1,487 | 326 | 295 | 147 |
| Fairfield County [CT] | 1,398 | 294 | 383 | 124 |
| San Diego County [CA] | 1,266 | 332 | 534 | 198 |
| Palm Beach County [FL] | 1,168 | 289 | 390 | 136 |
| Maricopa County [AZ] | 1,152 | 279 | 266 | 105 |
| Middlesex County [NJ] | 1,063 | 239 | 436 | 152 |
| Orange County [CA] | 1,034 | 251 | 226 | 107 |
| Wayne County [MI] | 1,027 | 283 | 280 | 120 |
| Montgomery County [MD] | 906 | 340 | 139 | 79 |
| Bergen County [NJ] | 822 | 273 | 391 | 217 |
| Miami-Dade County [FL] | 782 | 216 | 346 | 153 |
| Alameda County [CA] | 720 | 316 | 209 | 130 |
| Westchester County [NY] | 720 | 222 | 173 | 89 |
| Riverside County [CA] | 714 | 222 | 174 | 67 |
| Pinellas County [FL] | 676 | 240 | 125 | 67 |
| Santa Clara County [CA] | 607 | 175 | 145 | 87 |
| New Haven County [CT] | 595 | 201 | 123 | 87 |
| Harris County [TX] | 589 | 210 | 218 | 111 |
| Allegheny County [PA] | 584 | 189 | 131 | 77 |
| Contra Costa County [CA] | 577 | 256 | 137 | 107 |
| Middlesex County [MA] | 566 | 193 | 145 | 76 |
| King County [WA] | 538 | 177 | 186 | 91 |
| Erie County [NY] | 527 | 179 | 147 | 92 |
| Nassau County [NY] | 516 | 143 | 185 | 90 |
| Bronx County [NY] | 505 | 182 | 179 | 91 |
| Ventura County [CA] | 501 | 215 | 164 | 117 |
| Somerset County [NJ] | 478 | 200 | 105 | 63 |
| Rockland County [NY] | 463 | 165 | 200 | 111 |
| Monmouth County [NJ] | 456 | 222 | 211 | 144 |
| Hartford County [CT] | 411 | 168 | 168 | 98 |
| Suffolk County [NY] | 403 | 178 | 56 | 37 |
| Fairfax County [VA] | 396 | 160 | 22 | 25 |
| Montgomery County [PA] | 394 | 153 | 60 | 46 |
| Travis County [TX] | 393 | 218 | 60 | 77 |
| Burlington County [NJ] | 389 | 171 | 91 | 48 |
| Mercer County [NJ] | 374 | 143 | 75 | 59 |
| Essex County [NJ] | 372 | 181 | 180 | 106 |
| Morris County [NJ] | 360 | 159 | 123 | 87 |
| Hillsborough County [FL] | 352 | 166 | 155 | 106 |
| Passaic County [NJ] | 345 | 132 | 154 | 71 |
| Ocean County [NJ] | 341 | 131 | 190 | 93 |
| Oakland County [MI] | 338 | 138 | 53 | 44 |
| Union County [NJ] | 331 | 266 | 169 | 170 |
| San Bernardino County [CA] | 330 | 129 | 118 | 63 |
| DuPage County [IL] | 329 | 124 | 88 | 71 |
| St. Louis County [MO] | 326 | 142 | 140 | 95 |
| Collin County [TX] | 310 | 169 | 91 | 78 |
| Franklin County [OH] | 297 | 154 | 48 | 46 |
| Lee County [FL] | 288 | 141 | 34 | 37 |
| Bucks County [PA] | 276 | 123 | 36 | 34 |
| District of Columbia [DC] | 275 | 116 | 33 | 35 |
| Wake County [NC] | 272 | 185 | 42 | 38 |
| San Francisco County [CA] | 265 | 161 | 99 | 80 |
| San Mateo County [CA] | 262 | 126 | 24 | 28 |
| Dallas County [TX] | 262 | 138 | 97 | 62 |
| Baltimore city [MD] | 261 | 177 | 159 | 158 |
| Philadelphia County [PA] | 259 | 118 | 36 | 41 |
| Worcester County [MA] | 253 | 108 | 40 | 27 |
| Snohomish County [WA] | 246 | 156 | 95 | 65 |
| Monroe County [NY] | 244 | 115 | 100 | 46 |
| Multnomah County [OR] | 242 | 111 | 98 | 68 |
| Baltimore County [MD] | 217 | 163 | 9 | 14 |
| Collier County [FL] | 213 | 124 | 51 | 52 |
| Duval County [FL] | 211 | 249 | 141 | 183 |
| Kane County [IL] | 205 | 134 | 80 | 95 |
| Santa Barbara County [CA] | 199 | 119 | 51 | 57 |
| El Paso County [CO] | 197 | 112 | 72 | 75 |
| Arapahoe County [CO] | 194 | 142 | 54 | 70 |
| Bexar County [TX] | 188 | 153 | (B) | - |
| Suffolk County [MA] | 185 | 170 | 56 | 66 |
| Norfolk County [MA] | 184 | 105 | 21 | 21 |
| Lake County [IL] | 181 | 82 | 102 | 64 |
| Bernalillo County [NM] | 181 | 119 | 55 | 68 |
| Kern County [CA] | 178 | 122 | 36 | 38 |
| Sacramento County [CA] | 178 | 89 | 43 | 57 |
| Hudson County [NJ] | 173 | 83 | 50 | 46 |
| Ramsey County [MN] | 167 | 108 | 25 | 43 |
| Essex County [MA] | 161 | 102 | 13 | 20 |
| Washtenaw County [MI] | 161 | 105 | 6 | 10 |
| Prince George s County [MD] | 159 | 90 | 105 | 86 |
| Milwaukee County [WI] | 159 | 83 | 44 | 38 |
| Orange County [NY] | 157 | 82 | 18 | 21 |
| Tarrant County [TX] | 157 | 92 | 42 | 52 |
| Hamilton County [OH] | 155 | 81 | 73 | 59 |
| Washington County [OR] | 155 | 121 | 51 | 49 |
| Pima County [AZ] | 152 | 68 | 42 | 38 |
| Arlington County [VA] | 151 | 78 | 26 | 22 |
| Fulton County [GA] | 149 | 115 | 33 | 38 |
| Washoe County [NV] | 147 | 95 | 67 | 52 |
| Howard County [MD] | 141 | 111 | 25 | 39 |
| Placer County [CA] | 135 | 97 | (B) | - |
| San Joaquin County [CA] | 134 | 126 | 66 | 73 |
| Jefferson Parish [LA] | 134 | 120 | 35 | 34 |
| Salt Lake County [UT] | 134 | 85 | 9 | 13 |
| Delaware County [PA] | 124 | 95 | 58 | 54 |
| Marion County [IN] | 118 | 64 | 21 | 20 |
| Henrico County [VA] | 117 | 85 | 27 | 29 |
| Jefferson County [KY] | 115 | 85 | 7 | 10 |
| Orange County [FL] | 111 | 69 | 16 | 22 |
| Mecklenburg County [NC] | 108 | 79 | 15 | 22 |
| Will County [IL] | 107 | 48 | 10 | 16 |
| Chester County [PA] | 106 | 65 | 36 | 38 |
| Fresno County [CA] | 103 | 106 | 15 | 25 |
| Hennepin County [MN] | 103 | 69 | (B) | - |
| Loudoun County [VA] | 103 | 81 | 7 | 11 |
| Sonoma County [CA] | 101 | 77 | 17 | 28 |
| Denver County [CO] | 98 | 54 | 24 | 29 |
| Richmond County [NY] | 91 | 63 | 35 | 35 |
| Shelby County [TN] | 88 | 73 | 26 | 28 |
| DeKalb County [GA] | 86 | 64 | 44 | 49 |
| Camden County [NJ] | 85 | 62 | (B) | - |
| Atlantic County [NJ] | 82 | 95 | 26 | 38 |
| Gwinnett County [GA] | 78 | 79 | 46 | 54 |
| Cobb County [GA] | 76 | 51 | 14 | 23 |
| Davidson County [TN] | 73 | 70 | 16 | 25 |
| Prince William County [VA] | 73 | 90 | 33 | 57 |
| Virginia Beach city [VA] | 71 | 74 | 36 | 49 |
| Johnson County [KS] | 69 | 70 | 27 | 30 |
| Providence County [RI] | 69 | 56 | 25 | 23 |
| Honolulu County [HI] | 68 | 61 | (B) | - |
| Hillsborough County [NH] | 66 | 74 | 12 | 20 |
| Macomb County [MI] | 60 | 47 | 34 | 37 |
| Clark County [WA] | 59 | 56 | 15 | 19 |
| Lancaster County [PA] | 58 | 55 | 33 | 37 |
| Pierce County [WA] | 53 | 40 | 9 | 15 |
| Denton County [TX] | 52 | 38 | 14 | 23 |
| Anne Arundel County [MD] | 47 | 47 | (B) | - |
| Oklahoma County [OK] | 46 | 41 | 37 | 29 |
| Anchorage Municipality [AK] | 41 | 56 | 19 | 30 |
| Albany County [NY] | 40 | 35 | 1 | 2 |
| Onondaga County [NY] | 40 | 39 | 25 | 23 |
| Dane County [WI] | 39 | 48 | (B) | - |
| Guilford County [NC] | 38 | 46 | (B) | - |
| New Castle County [DE] | 36 | 36 | 10 | 16 |
| Plymouth County [MA] | 35 | 33 | 22 | 27 |
| Bristol County [MA] | 31 | 34 | 18 | 30 |
| Hawaii County [HI] | 29 | 39 | (B) | - |
| Solano County [CA] | 27 | 45 | 27 | 45 |
| Stanislaus County [CA] | 13 | 24 | 6 | 11 |
| Maui County [HI] | 13 | 11 | (B) | - |
| Fort Bend County [TX] | 12 | 18 | (B) | - |
| San Juan County [NM] | 11 | 20 | (B) | - |
| Dakota County [MN] | 8 | 12 | (B) | - |
| Polk County [IA] | 3 | 5 | (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] | 15,488 | 1,175 | 6,210 | 702 |
| Los Angeles-Long Beach-Anaheim [CA] | 6,252 | 769 | 1,947 | 380 |
| Cleveland-Elyria [OH] | 4,538 | 539 | 1,181 | 214 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 3,897 | 549 | 1,462 | 296 |
| Chicago-Naperville-Elgin [IL-IN] | 2,860 | 409 | 1,077 | 281 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 2,281 | 421 | 406 | 158 |
| San Francisco-Oakland-Hayward [CA] | 1,929 | 504 | 536 | 213 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 1,803 | 334 | 347 | 109 |
| New York-Newark-Jersey City [NY-NJ-PA] | 1,738 | 482 | 670 | 327 |
| Tampa-St. Petersburg-Clearwater [FL] | 1,629 | 374 | 527 | 172 |
| Las Vegas-Henderson-Paradise [NV] | 1,590 | 424 | 493 | 193 |
| Detroit-Warren-Dearborn [MI] | 1,488 | 307 | 367 | 123 |
| Bridgeport-Stamford-Norwalk [CT] | 1,398 | 294 | 383 | 124 |
| San Diego-Carlsbad [CA] | 1,266 | 332 | 534 | 198 |
| Boston-Cambridge-Newton [MA-NH] | 1,190 | 348 | 258 | 120 |
| Phoenix-Mesa-Scottsdale [AZ] | 1,184 | 278 | 290 | 112 |
| Houston-The Woodlands-Sugar Land [TX] | 1,111 | 368 | 362 | 160 |
| Riverside-San Bernardino-Ontario [CA] | 1,044 | 251 | 292 | 92 |
| Pittsburgh [PA] | 907 | 221 | 144 | 83 |
| Dallas-Fort Worth-Arlington [TX] | 872 | 247 | 244 | 101 |
| Seattle-Tacoma-Bellevue [WA] | 837 | 222 | 290 | 100 |
| Allentown-Bethlehem-Easton [PA-NJ] | 770 | 202 | 192 | 123 |
| Atlanta-Sandy Springs-Roswell [GA] | 751 | 239 | 182 | 98 |
| Akron [OH] | 749 | 184 | 239 | 100 |
| Baltimore-Columbia-Towson [MD] | 700 | 277 | 196 | 163 |
| Denver-Aurora-Lakewood [CO] | 700 | 208 | 137 | 96 |
| Portland-Vancouver-Hillsboro [OR-WA] | 645 | 212 | 223 | 116 |
| San Jose-Sunnyvale-Santa Clara [CA] | 607 | 175 | 145 | 87 |
| Jacksonville [FL] | 606 | 375 | 242 | 209 |
| New Haven-Milford [CT] | 595 | 201 | 123 | 87 |
| Hartford-West Hartford-East Hartford [CT] | 566 | 187 | 217 | 104 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 558 | 178 | 178 | 95 |
| St. Louis [MO-IL] | 556 | 181 | 198 | 107 |
| Deltona-Daytona Beach-Ormond Beach [FL] | 528 | 244 | 316 | 188 |
| Oxnard-Thousand Oaks-Ventura [CA] | 501 | 215 | 164 | 117 |
| Orlando-Kissimmee-Sanford [FL] | 479 | 227 | 193 | 179 |
| Columbus [OH] | 417 | 164 | 64 | 49 |
| Austin-Round Rock [TX] | 413 | 219 | 60 | 77 |
| Raleigh [NC] | 381 | 240 | 42 | 38 |
| Sacramento-Roseville-Arden-Arcade [CA] | 380 | 140 | 43 | 57 |
| Trenton [NJ] | 374 | 143 | 75 | 59 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 330 | 131 | 28 | 43 |
| Albuquerque [NM] | 327 | 154 | 109 | 89 |
| Rochester [NY] | 289 | 133 | 102 | 47 |
| Cape Coral-Fort Myers [FL] | 288 | 141 | 34 | 37 |
| Richmond [VA] | 285 | 137 | 90 | 104 |
| Worcester [MA-CT] | 279 | 113 | 40 | 27 |
| Milwaukee-Waukesha-West Allis [WI] | 277 | 103 | 73 | 47 |
| Cincinnati [OH-KY-IN] | 269 | 110 | 73 | 59 |
| Salt Lake City [UT] | 229 | 169 | 9 | 13 |
| Kansas City [MO-KS] | 213 | 188 | 82 | 93 |
| Naples-Immokalee-Marco Island [FL] | 213 | 124 | 51 | 52 |
| Santa Maria-Santa Barbara [CA] | 199 | 119 | 51 | 57 |
| Colorado Springs [CO] | 197 | 112 | 72 | 75 |
| Providence-Warwick [RI-MA] | 192 | 116 | 83 | 71 |
| San Antonio-New Braunfels [TX] | 188 | 153 | (B) | - |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 181 | 116 | 43 | 53 |
| Bakersfield [CA] | 178 | 122 | 36 | 38 |
| Louisville Jefferson County [KY] | 173 | 104 | 39 | 49 |
| Indianapolis-Carmel-Anderson [IN] | 168 | 84 | 21 | 20 |
| Albany-Schenectady-Troy [NY] | 163 | 77 | 84 | 50 |
| Ann Arbor [MI] | 161 | 105 | 6 | 10 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 157 | 80 | 36 | 49 |
| Charlotte-Concord-Gastonia [NC-SC] | 156 | 98 | 15 | 22 |
| Tucson [AZ] | 152 | 68 | 42 | 38 |
| Reno [NV] | 147 | 95 | 67 | 52 |
| Dayton [OH] | 144 | 87 | 12 | 17 |
| New Orleans-Metairie [LA] | 137 | 121 | 38 | 35 |
| Stockton-Lodi [CA] | 134 | 126 | 66 | 73 |
| Harrisburg-Carlisle [PA] | 133 | 70 | 17 | 25 |
| Grand Rapids-Wyoming [MI] | 123 | 81 | 57 | 59 |
| Syracuse [NY] | 120 | 84 | 44 | 36 |
| Fresno [CA] | 103 | 106 | 15 | 25 |
| Santa Rosa [CA] | 101 | 77 | 17 | 28 |
| Memphis [TN-MS-AR] | 88 | 73 | 26 | 28 |
| Tulsa [OK] | 86 | 65 | (B) | - |
| Atlantic City-Hammonton [NJ] | 82 | 95 | 26 | 38 |
| Spokane-Spokane Valley [WA] | 77 | 61 | 7 | 10 |
| Urban Honolulu [HI] | 68 | 61 | (B) | - |
| Manchester-Nashua [NH] | 66 | 74 | 12 | 20 |
| Lancaster [PA] | 58 | 55 | 33 | 37 |
| Madison [WI] | 57 | 49 | 7 | 8 |
| Springfield [MA] | 48 | 54 | 9 | 15 |
| Oklahoma City [OK] | 46 | 41 | 37 | 29 |
| Anchorage [AK] | 44 | 56 | 19 | 30 |
| Lansing-East Lansing [MI] | 42 | 37 | 8 | 14 |
| Durham-Chapel Hill [NC] | 41 | 47 | (B) | - |
| Greensboro-High Point [NC] | 38 | 46 | (B) | - |
| Hilo [HI] | 29 | 39 | (B) | - |
| Vallejo-Fairfield [CA] | 27 | 45 | 27 | 45 |
| Baton Rouge [LA] | 25 | 29 | 3 | 4 |
| Kahului-Wailuku-Lahaina [HI] | 13 | 11 | (B) | - |
| Modesto [CA] | 13 | 24 | 6 | 11 |
| Farmington [NM] | 11 | 20 | (B) | - |
| Portland-South Portland [ME] | 11 | 14 | (B) | - |
| Des Moines-West Des Moines [IA] | 3 | 5 | (B) | - |