| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 257,740 | 5,364 | 105,180 | 2,827 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| New York | 96,980 | 4,113 | 48,980 | 2,611 |
| California | 22,790 | 1,775 | 7,890 | 945 |
| New Jersey | 18,165 | 1,460 | 6,845 | 768 |
| Texas | 16,330 | 1,618 | 5,225 | 769 |
| Michigan | 13,795 | 1,287 | 7,110 | 892 |
| Virginia | 11,025 | 1,682 | 4,000 | 834 |
| Florida | 9,275 | 1,248 | 3,380 | 678 |
| Maryland | 8,435 | 1,121 | 2,280 | 452 |
| Georgia | 8,220 | 1,276 | 2,770 | 569 |
| Pennsylvania | 7,850 | 1,146 | 3,035 | 531 |
| Illinois | 5,980 | 1,025 | 2,220 | 711 |
| Massachusetts | 4,995 | 697 | 1,685 | 391 |
| Connecticut | 4,745 | 814 | 2,225 | 551 |
| Ohio | 2,660 | 514 | 620 | 187 |
| North Carolina | 2,475 | 495 | 715 | 240 |
| Arizona | 2,185 | 582 | 555 | 186 |
| Missouri | 1,990 | 588 | 570 | 220 |
| Minnesota | 1,850 | 430 | 305 | 156 |
| Tennessee | 1,810 | 485 | 420 | 150 |
| Washington | 1,515 | 446 | 290 | 122 |
| Colorado | 1,350 | 434 | 345 | 123 |
| Indiana | 1,155 | 334 | 250 | 121 |
| Kansas | 1,050 | 318 | 245 | 104 |
| Louisiana | 905 | 316 | 320 | 183 |
| Alabama | 895 | 333 | 245 | 116 |
| Oregon | 890 | 386 | 270 | 172 |
| District of Columbia | 860 | 373 | 305 | 165 |
| Nevada | 765 | 485 | 335 | 227 |
| Oklahoma | 755 | 263 | 230 | 103 |
| Wisconsin | 710 | 205 | 155 | 77 |
| South Carolina | 670 | 378 | 190 | 188 |
| Kentucky | 575 | 195 | 70 | 44 |
| Nebraska | 520 | 232 | 150 | 148 |
| Rhode Island | 500 | 204 | 185 | 119 |
| Delaware | 465 | 205 | 140 | 91 |
| West Virginia | 410 | 222 | 65 | 61 |
| Utah | 350 | 220 | 30 | 30 |
| New Hampshire | 325 | 186 | (D) | (D) |
| Mississippi | 265 | 148 | 90 | 72 |
| New Mexico | 260 | 223 | (D) | (D) |
| Arkansas | 230 | 146 | 70 | 56 |
| Iowa | 200 | 118 | 50 | 57 |
| Alaska | 110 | 105 | 35 | 43 |
| North Dakota | 100 | 105 | (D) | (D) |
| Vermont | 100 | 144 | 65 | 96 |
| Hawaii | 95 | 81 | 45 | 55 |
| Maine | 60 | 65 | (B) | - |
| Wyoming | 35 | 32 | (D) | (D) |
| South Dakota | 30 | 43 | (D) | (D) |
| Idaho | (D) | (D) | (B) | - |
| Montana | (D) | (D) | (D) | (D) |
| Puerto Rico | (D) | (D) | (D) | (D) |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Queens County [NY] | 50,270 | 3,218 | 26,745 | 2,062 |
| Kings County [NY] | 17,465 | 1,421 | 10,140 | 1,024 |
| Bronx County [NY] | 12,795 | 1,324 | 6,625 | 945 |
| Los Angeles County [CA] | 9,465 | 1,215 | 4,610 | 706 |
| Wayne County [MI] | 8,405 | 1,010 | 4,880 | 732 |
| Fairfax County [VA] | 4,410 | 962 | 1,740 | 565 |
| Montgomery County [MD] | 4,390 | 705 | 1,155 | 258 |
| New York County [NY] | 4,105 | 901 | 1,205 | 387 |
| Passaic County [NJ] | 4,060 | 800 | 1,700 | 357 |
| Santa Clara County [CA] | 3,740 | 695 | 505 | 172 |
| Cook County [IL] | 3,545 | 889 | 1,550 | 625 |
| Harris County [TX] | 3,255 | 831 | 1,190 | 395 |
| Dallas County [TX] | 3,095 | 807 | 1,025 | 367 |
| Middlesex County [NJ] | 2,930 | 558 | 810 | 255 |
| Nassau County [NY] | 2,915 | 641 | 855 | 235 |
| Collin County [TX] | 2,830 | 653 | 835 | 295 |
| Middlesex County [MA] | 2,740 | 656 | 740 | 282 |
| Atlantic County [NJ] | 2,570 | 559 | 1,530 | 384 |
| Gwinnett County [GA] | 2,550 | 625 | 805 | 293 |
| Suffolk County [NY] | 2,510 | 449 | 755 | 222 |
| Montgomery County [PA] | 2,385 | 605 | 1,145 | 365 |
| Macomb County [MI] | 2,370 | 567 | 1,340 | 413 |
| Orange County [CA] | 2,160 | 538 | 765 | 290 |
| Alameda County [CA] | 2,050 | 515 | 440 | 170 |
| Maricopa County [AZ] | 1,900 | 524 | 495 | 174 |
| Tarrant County [TX] | 1,885 | 596 | 745 | 273 |
| Loudoun County [VA] | 1,885 | 816 | 775 | 407 |
| Fairfield County [CT] | 1,880 | 534 | 845 | 335 |
| Philadelphia County [PA] | 1,590 | 542 | 625 | 286 |
| Broward County [FL] | 1,515 | 446 | 655 | 314 |
| DeKalb County [GA] | 1,515 | 470 | 755 | 252 |
| St. Louis County [MO] | 1,380 | 552 | 440 | 223 |
| Oakland County [MI] | 1,335 | 338 | 295 | 140 |
| Essex County [NJ] | 1,325 | 461 | 395 | 213 |
| Arlington County [VA] | 1,305 | 463 | 345 | 193 |
| Fulton County [GA] | 1,300 | 442 | 225 | 183 |
| Palm Beach County [FL] | 1,295 | 443 | 470 | 187 |
| Hudson County [NJ] | 1,280 | 393 | 485 | 208 |
| Erie County [NY] | 1,205 | 472 | 640 | 228 |
| Delaware County [PA] | 1,200 | 341 | 540 | 198 |
| Hartford County [CT] | 1,165 | 439 | 625 | 268 |
| Miami-Dade County [FL] | 1,145 | 586 | 235 | 250 |
| New Haven County [CT] | 1,090 | 439 | 445 | 264 |
| King County [WA] | 1,085 | 401 | 250 | 113 |
| Howard County [MD] | 1,075 | 437 | 225 | 182 |
| Prince George s County [MD] | 1,065 | 331 | 460 | 198 |
| Bergen County [NJ] | 1,060 | 512 | 245 | 142 |
| Hillsborough County [FL] | 1,010 | 351 | 225 | 98 |
| Westchester County [NY] | 995 | 412 | 370 | 228 |
| Fort Bend County [TX] | 950 | 430 | 265 | 206 |
| Cobb County [GA] | 925 | 476 | 220 | 174 |
| DuPage County [IL] | 900 | 290 | 185 | 92 |
| Morris County [NJ] | 900 | 343 | 220 | 137 |
| Wake County [NC] | 890 | 291 | 315 | 153 |
| District of Columbia [DC] | 860 | 373 | 305 | 165 |
| San Diego County [CA] | 850 | 383 | 260 | 199 |
| Franklin County [OH] | 845 | 337 | 195 | 105 |
| Hennepin County [MN] | 820 | 298 | 175 | 107 |
| Travis County [TX] | 770 | 282 | 115 | 90 |
| Somerset County [NJ] | 755 | 358 | 50 | 49 |
| Camden County [NJ] | 735 | 285 | 360 | 183 |
| Prince William County [VA] | 735 | 336 | 265 | 167 |
| Allegheny County [PA] | 700 | 219 | 175 | 112 |
| Denton County [TX] | 685 | 382 | 240 | 172 |
| Shelby County [TN] | 670 | 297 | 200 | 99 |
| Albany County [NY] | 655 | 233 | 265 | 128 |
| Davidson County [TN] | 645 | 291 | 170 | 123 |
| Burlington County [NJ] | 630 | 295 | 215 | 144 |
| Mercer County [NJ] | 630 | 305 | 300 | 194 |
| Suffolk County [MA] | 625 | 257 | 330 | 188 |
| Baltimore County [MD] | 610 | 290 | 170 | 133 |
| Mecklenburg County [NC] | 595 | 313 | 130 | 92 |
| Washington County [OR] | 595 | 350 | 175 | 151 |
| Henrico County [VA] | 590 | 223 | 315 | 137 |
| Monmouth County [NJ] | 575 | 229 | 135 | 83 |
| San Mateo County [CA] | 570 | 340 | 175 | 172 |
| Richmond County [NY] | 570 | 290 | 185 | 177 |
| Sacramento County [CA] | 560 | 373 | 155 | 96 |
| Cuyahoga County [OH] | 540 | 223 | 120 | 84 |
| Contra Costa County [CA] | 525 | 265 | 90 | 91 |
| Union County [NJ] | 500 | 305 | 310 | 294 |
| Ventura County [CA] | 490 | 247 | 185 | 115 |
| Orange County [FL] | 485 | 237 | 175 | 108 |
| Onondaga County [NY] | 470 | 193 | 160 | 96 |
| Washoe County [NV] | 465 | 439 | 205 | 199 |
| Washtenaw County [MI] | 460 | 214 | 85 | 56 |
| San Bernardino County [CA] | 455 | 238 | 165 | 111 |
| Johnson County [KS] | 455 | 288 | 80 | 62 |
| Riverside County [CA] | 450 | 254 | 115 | 94 |
| Norfolk County [MA] | 450 | 259 | 110 | 100 |
| New Castle County [DE] | 445 | 204 | 140 | 91 |
| Worcester County [MA] | 440 | 191 | 165 | 121 |
| Duval County [FL] | 435 | 309 | 110 | 106 |
| San Francisco County [CA] | 380 | 226 | 65 | 56 |
| Will County [IL] | 380 | 226 | 90 | 69 |
| Jefferson Parish [LA] | 375 | 295 | 155 | 180 |
| Chester County [PA] | 375 | 213 | 40 | 38 |
| Arapahoe County [CO] | 370 | 191 | 150 | 112 |
| Providence County [RI] | 360 | 183 | 165 | 115 |
| Hamilton County [OH] | 340 | 199 | 95 | 87 |
| Baltimore city [MD] | 320 | 253 | 65 | 78 |
| Essex County [MA] | 320 | 245 | 230 | 235 |
| Salt Lake County [UT] | 310 | 216 | (D) | (D) |
| Clark County [NV] | 300 | 165 | 130 | 104 |
| Monroe County [NY] | 285 | 199 | 90 | 68 |
| Rockland County [NY] | 265 | 166 | (D) | (D) |
| Dane County [WI] | 245 | 153 | (D) | (D) |
| Bucks County [PA] | 235 | 156 | 120 | 105 |
| Pinellas County [FL] | 225 | 178 | 90 | 86 |
| Lee County [FL] | 215 | 216 | 125 | 131 |
| Anne Arundel County [MD] | 210 | 232 | 55 | 90 |
| Bexar County [TX] | 210 | 117 | 90 | 60 |
| Kern County [CA] | 195 | 165 | 90 | 94 |
| Denver County [CO] | 175 | 158 | 80 | 71 |
| Dakota County [MN] | 175 | 134 | 70 | 97 |
| Snohomish County [WA] | 170 | 110 | (D) | (D) |
| Fresno County [CA] | 150 | 137 | 70 | 70 |
| Jefferson County [KY] | 150 | 114 | (D) | (D) |
| Lake County [IL] | 135 | 103 | (D) | (D) |
| Milwaukee County [WI] | 135 | 96 | (D) | (D) |
| Pima County [AZ] | 130 | 113 | 45 | 49 |
| Orange County [NY] | 130 | 87 | 20 | 19 |
| Santa Barbara County [CA] | 125 | 74 | (B) | - |
| Oklahoma County [OK] | 110 | 80 | 50 | 48 |
| Ocean County [NJ] | 100 | 86 | 30 | 40 |
| Virginia Beach city [VA] | 95 | 106 | 20 | 41 |
| Anchorage Municipality [AK] | 90 | 101 | 35 | 43 |
| Honolulu County [HI] | 90 | 82 | 45 | 55 |
| Hillsborough County [NH] | 90 | 77 | (D) | (D) |
| San Joaquin County [CA] | 85 | 91 | (D) | (D) |
| Hampden County [MA] | 85 | 108 | 40 | 53 |
| Yolo County [CA] | 75 | 76 | 40 | 50 |
| Marion County [IN] | 75 | 57 | (B) | - |
| Collier County [FL] | 70 | 86 | (D) | (D) |
| Bernalillo County [NM] | 70 | 65 | (D) | (D) |
| Plymouth County [MA] | 65 | 63 | (D) | (D) |
| Monterey County [CA] | 55 | 66 | 50 | 60 |
| Ramsey County [MN] | 55 | 51 | (D) | (D) |
| Guilford County [NC] | 55 | 51 | (D) | (D) |
| Lancaster County [PA] | 55 | 40 | (B) | - |
| Polk County [IA] | 40 | 65 | (D) | (D) |
| Placer County [CA] | 25 | 29 | (D) | (D) |
| Solano County [CA] | 25 | 33 | (B) | - |
| Kane County [IL] | 20 | 45 | (D) | (D) |
| Bristol County [MA] | 20 | 36 | (B) | - |
| Sonoma County [CA] | (D) | (D) | (B) | - |
| Stanislaus County [CA] | (D) | (D) | (B) | - |
| Maui County [HI] | (D) | (D) | (B) | - |
| Multnomah County [OR] | (D) | (D) | (B) | - |
| Clark County [WA] | (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] | 105,765 | 4,453 | 51,340 | 2,766 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 16,160 | 1,906 | 5,470 | 856 |
| Detroit-Warren-Dearborn [MI] | 12,110 | 1,235 | 6,515 | 863 |
| Los Angeles-Long Beach-Anaheim [CA] | 11,625 | 1,341 | 5,375 | 818 |
| Dallas-Fort Worth-Arlington [TX] | 8,540 | 1,233 | 2,890 | 580 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 7,700 | 1,046 | 3,240 | 584 |
| Atlanta-Sandy Springs-Roswell [GA] | 7,585 | 1,201 | 2,435 | 486 |
| Chicago-Naperville-Elgin [IL-IN] | 5,200 | 999 | 1,900 | 660 |
| Houston-The Woodlands-Sugar Land [TX] | 4,985 | 1,042 | 1,535 | 458 |
| Boston-Cambridge-Newton [MA-NH] | 4,320 | 691 | 1,475 | 375 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 3,955 | 868 | 1,360 | 441 |
| San Jose-Sunnyvale-Santa Clara [CA] | 3,740 | 695 | 505 | 172 |
| San Francisco-Oakland-Hayward [CA] | 3,600 | 708 | 770 | 258 |
| Atlantic City-Hammonton [NJ] | 2,570 | 559 | 1,530 | 384 |
| Baltimore-Columbia-Towson [MD] | 2,260 | 672 | 520 | 261 |
| Phoenix-Mesa-Scottsdale [AZ] | 1,925 | 525 | 495 | 174 |
| Bridgeport-Stamford-Norwalk [CT] | 1,880 | 534 | 845 | 335 |
| St. Louis [MO-IL] | 1,575 | 553 | 495 | 220 |
| Hartford-West Hartford-East Hartford [CT] | 1,475 | 467 | 760 | 278 |
| Tampa-St. Petersburg-Clearwater [FL] | 1,395 | 384 | 315 | 124 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 1,355 | 361 | 280 | 143 |
| Orlando-Kissimmee-Sanford [FL] | 1,280 | 461 | 630 | 274 |
| Denver-Aurora-Lakewood [CO] | 1,260 | 420 | 335 | 123 |
| Seattle-Tacoma-Bellevue [WA] | 1,255 | 426 | 260 | 117 |
| Albany-Schenectady-Troy [NY] | 1,220 | 401 | 555 | 214 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 1,205 | 472 | 640 | 228 |
| New Haven-Milford [CT] | 1,090 | 439 | 445 | 264 |
| Austin-Round Rock [TX] | 1,060 | 322 | 185 | 142 |
| Richmond [VA] | 955 | 282 | 395 | 165 |
| Riverside-San Bernardino-Ontario [CA] | 905 | 356 | 275 | 144 |
| Columbus [OH] | 895 | 345 | 195 | 105 |
| Raleigh [NC] | 890 | 291 | 315 | 153 |
| San Diego-Carlsbad [CA] | 850 | 383 | 260 | 199 |
| Pittsburgh [PA] | 800 | 235 | 200 | 119 |
| Charlotte-Concord-Gastonia [NC-SC] | 795 | 363 | 175 | 117 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 730 | 319 | 185 | 126 |
| Portland-Vancouver-Hillsboro [OR-WA] | 700 | 359 | 215 | 159 |
| Memphis [TN-MS-AR] | 670 | 297 | 200 | 99 |
| Cleveland-Elyria [OH] | 660 | 217 | 185 | 90 |
| Sacramento-Roseville-Arden-Arcade [CA] | 660 | 372 | 200 | 109 |
| Trenton [NJ] | 630 | 305 | 300 | 194 |
| Kansas City [MO-KS] | 560 | 289 | 90 | 71 |
| Providence-Warwick [RI-MA] | 515 | 220 | 185 | 119 |
| Syracuse [NY] | 500 | 195 | 190 | 99 |
| Cincinnati [OH-KY-IN] | 495 | 230 | 120 | 91 |
| New Orleans-Metairie [LA] | 490 | 279 | 170 | 181 |
| Oxnard-Thousand Oaks-Ventura [CA] | 490 | 247 | 185 | 115 |
| Jacksonville [FL] | 475 | 311 | 110 | 106 |
| Reno [NV] | 465 | 439 | 205 | 199 |
| Ann Arbor [MI] | 460 | 214 | 85 | 56 |
| Durham-Chapel Hill [NC] | 455 | 233 | 125 | 146 |
| Worcester [MA-CT] | 455 | 196 | 180 | 130 |
| Rochester [NY] | 430 | 231 | 115 | 75 |
| Omaha-Council Bluffs [NE-IA] | 415 | 215 | 135 | 145 |
| Harrisburg-Carlisle [PA] | 335 | 220 | 60 | 54 |
| Springfield [MA] | 325 | 217 | 95 | 107 |
| Salt Lake City [UT] | 310 | 216 | (D) | (D) |
| Allentown-Bethlehem-Easton [PA-NJ] | 305 | 195 | 60 | 46 |
| Indianapolis-Carmel-Anderson [IN] | 300 | 161 | 40 | 37 |
| Las Vegas-Henderson-Paradise [NV] | 300 | 165 | 130 | 104 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 300 | 170 | 90 | 86 |
| Milwaukee-Waukesha-West Allis [WI] | 285 | 158 | 65 | 55 |
| Lansing-East Lansing [MI] | 275 | 135 | (D) | (D) |
| Oklahoma City [OK] | 275 | 173 | 130 | 86 |
| Deltona-Daytona Beach-Ormond Beach [FL] | 265 | 213 | 120 | 112 |
| Madison [WI] | 265 | 156 | (D) | (D) |
| Grand Rapids-Wyoming [MI] | 260 | 209 | 85 | 85 |
| Cape Coral-Fort Myers [FL] | 215 | 216 | 125 | 131 |
| Akron [OH] | 210 | 138 | 65 | 62 |
| San Antonio-New Braunfels [TX] | 210 | 117 | 90 | 60 |
| Bakersfield [CA] | 195 | 165 | 90 | 94 |
| Baton Rouge [LA] | 195 | 136 | 100 | 88 |
| Tulsa [OK] | 190 | 111 | (D) | (D) |
| Dayton [OH] | 150 | 124 | 35 | 35 |
| Fresno [CA] | 150 | 137 | 70 | 70 |
| Louisville Jefferson County [KY] | 150 | 114 | (D) | (D) |
| Tucson [AZ] | 130 | 113 | 45 | 49 |
| Santa Maria-Santa Barbara [CA] | 125 | 74 | (B) | - |
| Anchorage [AK] | 90 | 101 | 35 | 43 |
| Manchester-Nashua [NH] | 90 | 77 | (D) | (D) |
| Urban Honolulu [HI] | 90 | 82 | 45 | 55 |
| Stockton-Lodi [CA] | 85 | 91 | (D) | (D) |
| Albuquerque [NM] | 70 | 65 | (D) | (D) |
| Naples-Immokalee-Marco Island [FL] | 70 | 86 | (D) | (D) |
| Des Moines-West Des Moines [IA] | 60 | 71 | (D) | (D) |
| Greensboro-High Point [NC] | 55 | 51 | (D) | (D) |
| Lancaster [PA] | 55 | 40 | (B) | - |
| Salinas [CA] | 55 | 66 | 50 | 60 |
| Spokane-Spokane Valley [WA] | 55 | 64 | (B) | - |
| New York-Newark-Jersey City [NY-NJ-PA] | 40 | 50 | 40 | 50 |
| Lafayette [LA] | 30 | 34 | 20 | 30 |
| Vallejo-Fairfield [CA] | 25 | 33 | (B) | - |
| Kahului-Wailuku-Lahaina [HI] | (D) | (D) | (B) | - |
| Modesto [CA] | (D) | (D) | (B) | - |
| Portland-South Portland [ME] | (D) | (D) | (B) | - |
| Santa Rosa [CA] | (D) | (D) | (B) | - |