| Country | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| United States | 154,625 | 4,288 | 55,550 | 2,123 |
| State | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| California | 25,075 | 1,736 | 8,590 | 741 |
| Illinois | 16,340 | 1,241 | 7,035 | 757 |
| New York | 15,135 | 1,108 | 5,515 | 555 |
| Michigan | 11,375 | 1,050 | 4,360 | 534 |
| Florida | 9,665 | 1,223 | 3,420 | 607 |
| Washington | 8,800 | 1,468 | 3,160 | 644 |
| Texas | 6,460 | 841 | 2,005 | 394 |
| Ohio | 6,335 | 990 | 3,055 | 566 |
| Georgia | 6,305 | 1,132 | 2,085 | 494 |
| Oregon | 5,665 | 955 | 2,350 | 667 |
| New Jersey | 5,285 | 924 | 1,805 | 416 |
| Pennsylvania | 4,630 | 690 | 1,705 | 330 |
| Arizona | 4,210 | 663 | 1,660 | 376 |
| Virginia | 3,420 | 735 | 755 | 249 |
| Massachusetts | 2,675 | 558 | 1,035 | 348 |
| North Carolina | 2,475 | 668 | 935 | 337 |
| Maryland | 1,930 | 381 | 535 | 179 |
| Connecticut | 1,860 | 414 | 490 | 162 |
| Nevada | 1,760 | 476 | 745 | 298 |
| Missouri | 1,645 | 465 | 450 | 213 |
| Tennessee | 1,555 | 481 | 570 | 207 |
| Colorado | 1,455 | 354 | 415 | 186 |
| Minnesota | 1,400 | 578 | 410 | 216 |
| Indiana | 1,145 | 357 | 195 | 110 |
| Idaho | 895 | 347 | 315 | 191 |
| New Hampshire | 720 | 247 | 135 | 86 |
| Wisconsin | 710 | 204 | 170 | 98 |
| South Carolina | 650 | 223 | 145 | 78 |
| Kentucky | 470 | 222 | 215 | 141 |
| Utah | 470 | 173 | 120 | 90 |
| Alabama | 460 | 168 | 60 | 54 |
| Arkansas | 345 | 215 | 205 | 155 |
| Louisiana | 320 | 195 | 45 | 36 |
| District of Columbia | 290 | 174 | (D) | (D) |
| Kansas | 270 | 190 | 95 | 64 |
| Vermont | 265 | 122 | 85 | 82 |
| Iowa | 245 | 150 | 30 | 38 |
| Delaware | 235 | 211 | 155 | 201 |
| Oklahoma | 230 | 135 | 70 | 76 |
| Rhode Island | 225 | 154 | 75 | 69 |
| New Mexico | 210 | 95 | 75 | 65 |
| Wyoming | 185 | 166 | (D) | (D) |
| Montana | 150 | 132 | (D) | (D) |
| Hawaii | 145 | 95 | (D) | (D) |
| Nebraska | 130 | 85 | (D) | (D) |
| Mississippi | 105 | 85 | (B) | - |
| Alaska | 85 | 76 | 40 | 48 |
| Maine | 80 | 59 | 65 | 55 |
| North Dakota | 50 | 36 | 25 | 24 |
| South Dakota | 50 | 44 | (D) | (D) |
| West Virginia | 35 | 34 | (D) | (D) |
| Puerto Rico | (D) | (D) | (B) | - |
| County | Number of speakers | Margin of Error | Speak English less than "Very Well" | Margin of Error |
| Cook County [IL] | 12,290 | 1,035 | 5,520 | 675 |
| Queens County [NY] | 7,440 | 783 | 3,050 | 424 |
| Los Angeles County [CA] | 6,280 | 789 | 2,390 | 432 |
| King County [WA] | 4,425 | 917 | 1,455 | 365 |
| Orange County [CA] | 3,965 | 739 | 1,355 | 302 |
| Maricopa County [AZ] | 3,925 | 654 | 1,590 | 362 |
| Cuyahoga County [OH] | 3,820 | 761 | 2,075 | 478 |
| Broward County [FL] | 3,770 | 906 | 1,260 | 418 |
| Sacramento County [CA] | 3,720 | 923 | 1,540 | 379 |
| Gwinnett County [GA] | 3,605 | 1,042 | 1,145 | 443 |
| Multnomah County [OR] | 3,505 | 808 | 1,750 | 593 |
| Wayne County [MI] | 3,410 | 649 | 1,305 | 308 |
| Oakland County [MI] | 3,250 | 579 | 1,060 | 268 |
| Macomb County [MI] | 2,300 | 452 | 1,045 | 265 |
| Harris County [TX] | 1,605 | 475 | 640 | 233 |
| Riverside County [CA] | 1,585 | 420 | 775 | 223 |
| Clark County [WA] | 1,555 | 602 | 640 | 297 |
| Clark County [NV] | 1,525 | 452 | 660 | 284 |
| New York County [NY] | 1,515 | 485 | 375 | 162 |
| Santa Clara County [CA] | 1,415 | 395 | 295 | 104 |
| San Bernardino County [CA] | 1,320 | 442 | 565 | 243 |
| DuPage County [IL] | 1,305 | 488 | 585 | 259 |
| Kings County [NY] | 1,245 | 305 | 665 | 224 |
| Lake County [IL] | 1,170 | 333 | 435 | 162 |
| Washtenaw County [MI] | 1,165 | 455 | 515 | 234 |
| Fairfax County [VA] | 1,080 | 597 | 275 | 216 |
| Alameda County [CA] | 1,075 | 350 | 345 | 152 |
| San Diego County [CA] | 1,055 | 330 | 230 | 161 |
| Fairfield County [CT] | 1,035 | 330 | 320 | 139 |
| Palm Beach County [FL] | 1,000 | 297 | 405 | 215 |
| Pierce County [WA] | 985 | 389 | 355 | 215 |
| Snohomish County [WA] | 970 | 466 | 325 | 193 |
| Middlesex County [NJ] | 925 | 362 | 290 | 170 |
| Nassau County [NY] | 925 | 299 | 195 | 128 |
| Bergen County [NJ] | 890 | 356 | 215 | 185 |
| Westchester County [NY] | 875 | 284 | 170 | 92 |
| Philadelphia County [PA] | 820 | 269 | 350 | 130 |
| Duval County [FL] | 770 | 426 | 215 | 189 |
| Montgomery County [MD] | 765 | 248 | 205 | 117 |
| Dallas County [TX] | 735 | 261 | 280 | 135 |
| Washington County [OR] | 685 | 277 | 235 | 174 |
| Middlesex County [MA] | 665 | 230 | 140 | 85 |
| Denton County [TX] | 625 | 312 | 145 | 88 |
| Suffolk County [NY] | 610 | 230 | 105 | 84 |
| Placer County [CA] | 560 | 208 | 275 | 127 |
| Stanislaus County [CA] | 555 | 569 | 85 | 67 |
| Essex County [NJ] | 550 | 313 | 155 | 90 |
| Montgomery County [PA] | 545 | 211 | 205 | 96 |
| Miami-Dade County [FL] | 525 | 221 | 215 | 168 |
| Hennepin County [MN] | 510 | 195 | 95 | 81 |
| Hillsborough County [NH] | 490 | 243 | 120 | 85 |
| Collin County [TX] | 470 | 247 | 120 | 68 |
| Bexar County [TX] | 455 | 221 | 95 | 73 |
| Collier County [FL] | 450 | 296 | 250 | 202 |
| Orange County [FL] | 435 | 217 | 80 | 57 |
| Cobb County [GA] | 435 | 239 | 205 | 138 |
| San Mateo County [CA] | 425 | 219 | 95 | 109 |
| Tarrant County [TX] | 420 | 201 | 95 | 61 |
| Bronx County [NY] | 410 | 166 | 165 | 82 |
| Contra Costa County [CA] | 390 | 196 | 80 | 74 |
| Suffolk County [MA] | 390 | 316 | 200 | 191 |
| Hartford County [CT] | 385 | 171 | 110 | 62 |
| Mecklenburg County [NC] | 385 | 199 | 125 | 78 |
| Hillsborough County [FL] | 370 | 187 | 20 | 22 |
| San Joaquin County [CA] | 365 | 213 | 45 | 47 |
| Wake County [NC] | 355 | 265 | 110 | 114 |
| Fulton County [GA] | 350 | 171 | 145 | 125 |
| Hampden County [MA] | 350 | 229 | 215 | 168 |
| El Paso County [CO] | 345 | 189 | 130 | 96 |
| Hudson County [NJ] | 340 | 156 | 155 | 98 |
| Rockland County [NY] | 340 | 259 | 175 | 187 |
| Norfolk County [MA] | 330 | 180 | 70 | 77 |
| Will County [IL] | 325 | 217 | 60 | 58 |
| Travis County [TX] | 325 | 229 | 100 | 89 |
| Prince William County [VA] | 325 | 194 | 80 | 59 |
| Morris County [NJ] | 320 | 112 | 160 | 85 |
| Davidson County [TN] | 320 | 160 | 115 | 77 |
| San Francisco County [CA] | 315 | 137 | 65 | 67 |
| Pinellas County [FL] | 310 | 158 | 165 | 104 |
| Union County [NJ] | 310 | 170 | 110 | 89 |
| New Haven County [CT] | 300 | 159 | (D) | (D) |
| Monmouth County [NJ] | 300 | 208 | 105 | 122 |
| Salt Lake County [UT] | 300 | 165 | 90 | 91 |
| Ventura County [CA] | 295 | 142 | (D) | (D) |
| District of Columbia [DC] | 290 | 174 | (D) | (D) |
| St. Louis County [MO] | 290 | 163 | (D) | (D) |
| Lancaster County [PA] | 290 | 238 | 150 | 126 |
| Henrico County [VA] | 290 | 193 | (D) | (D) |
| Kane County [IL] | 265 | 211 | 150 | 148 |
| Essex County [MA] | 255 | 120 | 60 | 72 |
| DeKalb County [GA] | 250 | 135 | (D) | (D) |
| Passaic County [NJ] | 225 | 134 | 105 | 69 |
| Burlington County [NJ] | 220 | 142 | 120 | 85 |
| Mercer County [NJ] | 205 | 165 | 80 | 86 |
| Franklin County [OH] | 205 | 101 | 70 | 60 |
| Pima County [AZ] | 200 | 114 | 40 | 57 |
| Allegheny County [PA] | 200 | 99 | 45 | 39 |
| Prince George s County [MD] | 195 | 148 | 135 | 106 |
| Erie County [NY] | 190 | 118 | 70 | 52 |
| Denver County [CO] | 185 | 108 | 40 | 51 |
| Camden County [NJ] | 185 | 116 | 65 | 51 |
| Lee County [FL] | 175 | 105 | 145 | 94 |
| Johnson County [KS] | 170 | 189 | (D) | (D) |
| Washoe County [NV] | 165 | 133 | 50 | 78 |
| Somerset County [NJ] | 160 | 126 | 40 | 51 |
| Fort Bend County [TX] | 160 | 139 | (D) | (D) |
| Monterey County [CA] | 155 | 115 | (D) | (D) |
| Worcester County [MA] | 155 | 94 | 50 | 41 |
| Atlantic County [NJ] | 145 | 164 | 35 | 41 |
| Richmond County [NY] | 145 | 93 | 50 | 45 |
| Delaware County [PA] | 145 | 84 | 40 | 37 |
| Ocean County [NJ] | 140 | 106 | 70 | 65 |
| Honolulu County [HI] | 130 | 90 | (D) | (D) |
| Howard County [MD] | 125 | 101 | (D) | (D) |
| Onondaga County [NY] | 125 | 96 | (D) | (D) |
| Baltimore County [MD] | 120 | 67 | 40 | 29 |
| Monroe County [NY] | 120 | 119 | 20 | 41 |
| Bucks County [PA] | 120 | 84 | 55 | 51 |
| Loudoun County [VA] | 115 | 95 | (D) | (D) |
| Arapahoe County [CO] | 110 | 74 | 20 | 25 |
| Jefferson County [KY] | 110 | 130 | 90 | 129 |
| Plymouth County [MA] | 110 | 92 | (D) | (D) |
| Anne Arundel County [MD] | 105 | 85 | (D) | (D) |
| Baltimore city [MD] | 105 | 127 | (B) | - |
| Bernalillo County [NM] | 105 | 64 | (D) | (D) |
| Arlington County [VA] | 105 | 82 | (B) | - |
| New Castle County [DE] | 100 | 69 | 30 | 38 |
| Milwaukee County [WI] | 100 | 93 | 45 | 53 |
| Yolo County [CA] | 95 | 69 | (D) | (D) |
| Dakota County [MN] | 95 | 80 | 40 | 46 |
| Dane County [WI] | 95 | 89 | (D) | (D) |
| Chester County [PA] | 90 | 81 | 50 | 46 |
| Fresno County [CA] | 85 | 70 | (D) | (D) |
| Virginia Beach city [VA] | 85 | 76 | 20 | 23 |
| Marion County [IN] | 80 | 56 | (D) | (D) |
| Guilford County [NC] | 80 | 65 | (D) | (D) |
| Santa Barbara County [CA] | 75 | 64 | (B) | - |
| Ramsey County [MN] | 70 | 57 | (D) | (D) |
| Shelby County [TN] | 65 | 81 | (D) | (D) |
| Polk County [IA] | 55 | 61 | (B) | - |
| Albany County [NY] | 55 | 73 | 55 | 73 |
| Hamilton County [OH] | 50 | 53 | (D) | (D) |
| Orange County [NY] | 45 | 47 | (B) | - |
| Sonoma County [CA] | 35 | 32 | 25 | 24 |
| Providence County [RI] | 35 | 41 | (D) | (D) |
| Solano County [CA] | 30 | 51 | (D) | (D) |
| Kern County [CA] | 15 | 21 | (B) | - |
| Oklahoma County [OK] | 15 | 21 | (B) | - |
| Anchorage Municipality [AK] | (D) | (D) | (B) | - |
| Maui County [HI] | (D) | (D) | (B) | - |
| Jefferson Parish [LA] | (D) | (D) | (B) | - |
| Bristol County [MA] | (D) | (D) | (D) | (D) |
| 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] | 18,240 | 1,338 | 6,520 | 700 |
| Chicago-Naperville-Elgin [IL-IN] | 15,945 | 1,182 | 6,915 | 716 |
| Los Angeles-Long Beach-Anaheim [CA] | 10,240 | 1,129 | 3,745 | 566 |
| Detroit-Warren-Dearborn [MI] | 9,240 | 940 | 3,485 | 471 |
| Portland-Vancouver-Hillsboro [OR-WA] | 6,545 | 1,171 | 2,825 | 762 |
| Seattle-Tacoma-Bellevue [WA] | 6,380 | 1,117 | 2,135 | 526 |
| Atlanta-Sandy Springs-Roswell [GA] | 5,740 | 1,088 | 1,955 | 485 |
| Miami-Fort Lauderdale-West Palm Beach [FL] | 5,295 | 969 | 1,880 | 481 |
| Sacramento-Roseville-Arden-Arcade [CA] | 4,490 | 961 | 1,860 | 408 |
| Cleveland-Elyria [OH] | 4,485 | 860 | 2,305 | 509 |
| Phoenix-Mesa-Scottsdale [AZ] | 3,945 | 653 | 1,595 | 361 |
| Washington-Arlington-Alexandria [DC-VA-MD-WV] | 3,755 | 731 | 950 | 256 |
| Riverside-San Bernardino-Ontario [CA] | 2,910 | 592 | 1,340 | 331 |
| Dallas-Fort Worth-Arlington [TX] | 2,350 | 499 | 690 | 189 |
| Philadelphia-Camden-Wilmington [PA-NJ-DE-MD] | 2,320 | 439 | 930 | 209 |
| San Francisco-Oakland-Hayward [CA] | 2,285 | 432 | 635 | 222 |
| Houston-The Woodlands-Sugar Land [TX] | 2,160 | 528 | 815 | 251 |
| Boston-Cambridge-Newton [MA-NH] | 1,800 | 433 | 495 | 222 |
| Las Vegas-Henderson-Paradise [NV] | 1,525 | 452 | 660 | 284 |
| San Jose-Sunnyvale-Santa Clara [CA] | 1,415 | 395 | 295 | 104 |
| Minneapolis-St. Paul-Bloomington [MN-WI] | 1,240 | 569 | 385 | 213 |
| Ann Arbor [MI] | 1,165 | 455 | 515 | 234 |
| San Diego-Carlsbad [CA] | 1,055 | 330 | 230 | 161 |
| Bridgeport-Stamford-Norwalk [CT] | 1,035 | 330 | 320 | 139 |
| Jacksonville [FL] | 900 | 447 | 225 | 190 |
| Denver-Aurora-Lakewood [CO] | 800 | 203 | 200 | 102 |
| Tampa-St. Petersburg-Clearwater [FL] | 750 | 253 | 200 | 103 |
| Nashville-Davidson-Murfreesboro-Franklin [TN] | 710 | 308 | 255 | 112 |
| Charlotte-Concord-Gastonia [NC-SC] | 675 | 249 | 165 | 80 |
| Orlando-Kissimmee-Sanford [FL] | 630 | 242 | 125 | 72 |
| Modesto [CA] | 555 | 569 | 85 | 67 |
| St. Louis [MO-IL] | 530 | 223 | 155 | 115 |
| Manchester-Nashua [NH] | 490 | 243 | 120 | 85 |
| Richmond [VA] | 480 | 224 | 85 | 78 |
| San Antonio-New Braunfels [TX] | 480 | 221 | 95 | 73 |
| Baltimore-Columbia-Towson [MD] | 475 | 198 | 80 | 67 |
| Naples-Immokalee-Marco Island [FL] | 450 | 296 | 250 | 202 |
| Hartford-West Hartford-East Hartford [CT] | 430 | 181 | 110 | 62 |
| New York-Newark-Jersey City [NY-NJ-PA] | 405 | 162 | 190 | 100 |
| Springfield [MA] | 395 | 236 | 215 | 168 |
| Austin-Round Rock [TX] | 385 | 224 | 120 | 92 |
| Raleigh [NC] | 380 | 268 | 135 | 119 |
| Stockton-Lodi [CA] | 365 | 213 | 45 | 47 |
| Kansas City [MO-KS] | 350 | 266 | 135 | 122 |
| Colorado Springs [CO] | 345 | 189 | 130 | 96 |
| Akron [OH] | 325 | 154 | 155 | 83 |
| Pittsburgh [PA] | 320 | 165 | 80 | 60 |
| Providence-Warwick [RI-MA] | 320 | 210 | 170 | 162 |
| New Haven-Milford [CT] | 300 | 159 | (D) | (D) |
| Salt Lake City [UT] | 300 | 165 | 90 | 91 |
| Spokane-Spokane Valley [WA] | 300 | 298 | 75 | 78 |
| Allentown-Bethlehem-Easton [PA-NJ] | 295 | 223 | 100 | 94 |
| Oxnard-Thousand Oaks-Ventura [CA] | 295 | 142 | (D) | (D) |
| Lancaster [PA] | 290 | 238 | 150 | 126 |
| Virginia Beach-Norfolk-Newport News [VA-NC] | 285 | 131 | 50 | 46 |
| Cincinnati [OH-KY-IN] | 275 | 182 | 85 | 76 |
| Columbus [OH] | 275 | 108 | 85 | 64 |
| Grand Rapids-Wyoming [MI] | 270 | 162 | 95 | 84 |
| Milwaukee-Waukesha-West Allis [WI] | 260 | 132 | 50 | 54 |
| Indianapolis-Carmel-Anderson [IN] | 250 | 159 | (D) | (D) |
| Trenton [NJ] | 205 | 165 | 80 | 86 |
| Rochester [NY] | 200 | 139 | 50 | 52 |
| Tucson [AZ] | 200 | 114 | 40 | 57 |
| Buffalo-Cheektowaga-Niagara Falls [NY] | 190 | 118 | 70 | 52 |
| Cape Coral-Fort Myers [FL] | 175 | 105 | 145 | 94 |
| Reno [NV] | 165 | 133 | 50 | 78 |
| Albany-Schenectady-Troy [NY] | 155 | 116 | 110 | 96 |
| Salinas [CA] | 155 | 115 | (D) | (D) |
| Worcester [MA-CT] | 155 | 94 | 50 | 41 |
| Atlantic City-Hammonton [NJ] | 145 | 164 | 35 | 41 |
| Dayton [OH] | 145 | 166 | (D) | (D) |
| Syracuse [NY] | 135 | 97 | (D) | (D) |
| Albuquerque [NM] | 130 | 77 | 50 | 54 |
| Urban Honolulu [HI] | 130 | 90 | (D) | (D) |
| Louisville Jefferson County [KY] | 125 | 132 | 105 | 131 |
| Madison [WI] | 120 | 91 | (D) | (D) |
| Omaha-Council Bluffs [NE-IA] | 110 | 64 | (D) | (D) |
| Durham-Chapel Hill [NC] | 90 | 68 | (D) | (D) |
| Fresno [CA] | 85 | 70 | (D) | (D) |
| Lansing-East Lansing [MI] | 85 | 63 | (D) | (D) |
| Greensboro-High Point [NC] | 80 | 65 | (D) | (D) |
| Deltona-Daytona Beach-Ormond Beach [FL] | 75 | 73 | 55 | 52 |
| New Orleans-Metairie [LA] | 75 | 46 | (D) | (D) |
| Portland-South Portland [ME] | 75 | 60 | 65 | 55 |
| Santa Maria-Santa Barbara [CA] | 75 | 64 | (B) | - |
| Memphis [TN-MS-AR] | 65 | 81 | (D) | (D) |
| Des Moines-West Des Moines [IA] | 55 | 61 | (B) | - |
| Tulsa [OK] | 40 | 52 | (B) | - |
| Harrisburg-Carlisle [PA] | 35 | 49 | (B) | - |
| Oklahoma City [OK] | 35 | 33 | (B) | - |
| Santa Rosa [CA] | 35 | 32 | 25 | 24 |
| Baton Rouge [LA] | 30 | 26 | (D) | (D) |
| Vallejo-Fairfield [CA] | 30 | 51 | (D) | (D) |
| Bakersfield [CA] | 15 | 21 | (B) | - |
| Anchorage [AK] | (D) | (D) | (B) | - |
| Kahului-Wailuku-Lahaina [HI] | (D) | (D) | (B) | - |
| Lafayette [LA] | (D) | (D) | (D) | (D) |