The current Medicare Advantage penetration rates as of December 2020 for the 200 most populous counties in America, in terms of Medicare eligible beneficiaries.
For these 200 counties:
- 2 million Medicare beneficiaries and 14.3 million enrolled in MA
- Collectively, 44% Medicare Advantage Penetration
- The highest MA Penetration rate: Miami-Dade, Florida at 72%
- The lowest MA Penetration rate: Monterey, California at 10%
| County, State | Medicare Eligibles | Medicare Advantage Enrolled | MA Penetration |
|---|---|---|---|
| Los Angeles, California | 1,535,852 | 799,286 | 52.04% |
| Cook, Illinois | 833,207 | 276,608 | 33.20% |
| Maricopa, Arizona | 723,027 | 329,798 | 45.61% |
| Harris, Texas | 566,201 | 290,331 | 51.28% |
| San Diego, California | 550,178 | 276,252 | 50.21% |
| Orange, California | 524,459 | 276,971 | 52.81% |
| Miami-Dade, Florida | 477,983 | 344,494 | 72.07% |
| Riverside, California | 391,555 | 232,576 | 59.40% |
| Kings, New York | 378,738 | 179,167 | 47.31% |
| Clark, Nevada | 373,020 | 172,124 | 46.14% |
| Queens, New York | 371,634 | 189,549 | 51.00% |
| Broward, Florida | 334,203 | 197,859 | 59.20% |
| Wayne, Michigan | 332,494 | 169,812 | 51.07% |
| Palm Beach, Florida | 332,080 | 140,266 | 42.24% |
| Dallas, Texas | 328,225 | 142,798 | 43.51% |
| King, Washington | 328,037 | 140,396 | 42.80% |
| San Bernardino, California | 309,781 | 192,316 | 62.08% |
| Bexar, Texas | 302,886 | 150,286 | 49.62% |
| Suffolk, New York | 298,338 | 66,772 | 22.38% |
| New York, New York | 287,298 | 117,911 | 41.04% |
| Tarrant, Texas | 282,137 | 136,255 | 48.29% |
| Middlesex, Massachusetts | 276,254 | 77,489 | 28.05% |
| Santa Clara, California | 275,975 | 128,556 | 46.58% |
| Nassau, New York | 272,823 | 71,158 | 26.08% |
| Allegheny, Pennsylvania | 267,446 | 169,424 | 63.35% |
| Sacramento, California | 266,531 | 141,479 | 53.08% |
| Cuyahoga, Ohio | 261,137 | 128,434 | 49.18% |
| Philadelphia, Pennsylvania | 260,694 | 124,260 | 47.67% |
| Alameda, California | 250,253 | 115,329 | 46.08% |
| Pinellas, Florida | 250,065 | 133,344 | 53.32% |
| Oakland, Michigan | 248,312 | 107,833 | 43.43% |
| Hillsborough, Florida | 243,126 | 132,508 | 54.50% |
| Pima, Arizona | 233,411 | 119,780 | 51.32% |
| Bronx, New York | 211,682 | 130,184 | 61.50% |
| St. Louis, Missouri | 208,568 | 96,614 | 46.32% |
| Contra Costa, California | 204,279 | 101,381 | 49.63% |
| Hennepin, Minnesota | 203,042 | 105,225 | 51.82% |
| Erie, New York | 201,932 | 128,376 | 63.57% |
| Lee, Florida | 201,750 | 81,107 | 40.20% |
| Orange, Florida | 194,190 | 104,932 | 54.04% |
| Honolulu, Hawaii | 188,365 | 94,906 | 50.38% |
| Franklin, Ohio | 186,995 | 92,003 | 49.20% |
| Macomb, Michigan | 180,097 | 83,115 | 46.15% |
| Westchester, New York | 178,974 | 55,031 | 30.75% |
| Hartford, Connecticut | 175,320 | 92,260 | 52.62% |
| Bergen, New Jersey | 173,776 | 48,314 | 27.80% |
| Montgomery, Maryland | 170,569 | 24,511 | 14.37% |
| Duval, Florida | 169,803 | 73,961 | 43.56% |
| Montgomery, Pennsylvania | 168,923 | 51,059 | 30.23% |
| New Haven, Connecticut | 168,452 | 80,513 | 47.80% |
| DuPage, Illinois | 163,481 | 44,067 | 26.96% |
| Baltimore, Maryland | 163,319 | 23,744 | 14.54% |
| Essex, Massachusetts | 162,667 | 43,530 | 26.76% |
| Worcester, Massachusetts | 161,191 | 59,736 | 37.06% |
| Monroe, New York | 161,086 | 112,944 | 70.11% |
| Polk, Florida | 160,560 | 94,374 | 58.78% |
| Fairfield, Connecticut | 160,376 | 57,185 | 35.66% |
| Brevard, Florida | 159,790 | 69,610 | 43.56% |
| Fairfax, Virginia | 159,541 | 34,226 | 21.45% |
| Milwaukee, Wisconsin | 157,994 | 86,738 | 54.90% |
| Shelby, Tennessee | 156,821 | 59,970 | 38.24% |
| Ocean, New Jersey | 156,288 | 56,353 | 36.06% |
| Ventura, California | 155,269 | 49,253 | 31.72% |
| Volusia, Florida | 154,108 | 57,099 | 37.05% |
| Wake, North Carolina | 152,734 | 82,487 | 54.01% |
| Wake, North Carolina | 151,764 | 59,496 | 39.20% |
| Hamilton, Ohio | 150,685 | 72,086 | 47.84% |
| Jefferson, Kentucky | 150,674 | 60,609 | 40.23% |
| San Francisco, California | 150,063 | 64,654 | 43.08% |
| Sarasota, Florida | 148,899 | 51,783 | 34.78% |
| Marion, Indiana | 148,084 | 63,197 | 42.68% |
| Salt Lake, Utah | 146,755 | 69,426 | 47.31% |
| Fresno, California | 146,561 | 53,295 | 36.36% |
| Mecklenburg, North Carolina | 143,477 | 60,444 | 42.13% |
| Travis, Texas | 142,184 | 50,479 | 35.50% |
| Bucks, Pennsylvania | 140,954 | 50,014 | 35.48% |
| Fulton, Georgia | 140,673 | 64,154 | 45.61% |
| Middlesex, New Jersey | 139,369 | 44,626 | 32.02% |
| Prince George's, Maryland | 137,162 | 24,242 | 17.67% |
| Pasco, Florida | 136,580 | 82,348 | 60.29% |
| Norfolk, Massachusetts | 135,022 | 32,817 | 24.30% |
| El Paso, Texas | 133,842 | 86,590 | 64.70% |
| Jefferson, Alabama | 133,757 | 75,473 | 56.43% |
| Snohomish, Washington | 132,898 | 66,155 | 49.78% |
| Oklahoma, Oklahoma | 132,422 | 41,952 | 31.68% |
| Bernalillo, New Mexico | 132,128 | 71,385 | 54.03% |
| Multnomah, Oregon | 130,096 | 80,451 | 61.84% |
| San Mateo, California | 129,566 | 61,405 | 47.39% |
| Monmouth, New Jersey | 128,797 | 32,075 | 24.90% |
| Jackson, Missouri | 127,098 | 57,589 | 45.31% |
| Collin, Texas | 125,369 | 43,609 | 34.78% |
| Bristol, Massachusetts | 123,458 | 28,578 | 23.15% |
| Providence, Rhode Island | 122,147 | 63,239 | 51.77% |
| Kern, California | 121,912 | 50,312 | 41.27% |
| Marion, Florida | 119,939 | 61,241 | 51.06% |
| Essex, New Jersey | 119,872 | 49,389 | 41.20% |
| Summit, Ohio | 115,709 | 65,339 | 56.47% |
| Tulsa, Oklahoma | 115,546 | 44,685 | 38.67% |
| San Joaquin, California | 115,388 | 51,547 | 44.67% |
| Plymouth, Massachusetts | 115,210 | 25,014 | 21.71% |
| Lake, Illinois | 115,104 | 24,150 | 20.98% |
| Lancaster, Pennsylvania | 113,916 | 49,206 | 43.19% |
| El Paso, Colorado | 113,049 | 45,107 | 39.90% |
| Montgomery, Ohio | 112,456 | 59,725 | 53.11% |
| Gwinnett, Georgia | 112,333 | 53,229 | 47.39% |
| Kent, Michigan | 110,468 | 68,569 | 62.07% |
| Delaware, Pennsylvania | 109,650 | 33,436 | 30.49% |
| Jefferson, Colorado | 109,552 | 63,922 | 58.35% |
| Sonoma, California | 109,106 | 53,421 | 48.96% |
| Spokane, Washington | 108,898 | 49,279 | 45.25% |
| Suffolk, Massachusetts | 108,291 | 35,239 | 32.54% |
| Will, Illinois | 107,866 | 31,574 | 29.27% |
| Cobb, Georgia | 107,692 | 43,108 | 40.03% |
| Hidalgo, Texas | 107,636 | 65,815 | 61.15% |
| DeKalb, Georgia | 107,138 | 54,488 | 50.86% |
| Lake, Florida | 107,001 | 48,701 | 45.51% |
| Manatee, Florida | 105,488 | 43,586 | 41.32% |
| Collier, Florida | 104,776 | 31,113 | 29.69% |
| Horry, South Carolina | 104,415 | 30,886 | 29.58% |
| Denton, Texas | 104,099 | 38,481 | 36.97% |
| Hampden, Massachusetts | 103,698 | 38,264 | 36.90% |
| New Castle, Delaware | 103,594 | 22,010 | 21.25% |
| Fort Bend, Texas | 101,895 | 46,022 | 45.17% |
| Johnson, Kansas | 100,970 | 33,837 | 33.51% |
| Greenville, South Carolina | 100,921 | 39,587 | 39.23% |
| Baltimore City, Maryland | 99,887 | 20,499 | 20.52% |
| Davidson, Tennessee | 98,319 | 45,405 | 46.18% |
| Guilford, North Carolina | 98,156 | 57,801 | 58.89% |
| Anne Arundel, Maryland | 97,763 | 11,240 | 11.50% |
| Camden, New Jersey | 97,661 | 33,153 | 33.95% |
| Chester, Pennsylvania | 97,486 | 25,832 | 26.50% |
| Onondaga, New York | 96,987 | 50,086 | 51.64% |
| Arapahoe, Colorado | 96,440 | 48,362 | 50.15% |
| Lake, Indiana | 95,852 | 33,439 | 34.89% |
| York, Pennsylvania | 95,599 | 39,392 | 41.21% |
| Westmoreland, Pennsylvania | 95,280 | 61,992 | 65.06% |
| District of Columbia, Washington D.C. | 94,922 | 21,338 | 22.48% |
| Montgomery, Texas | 93,826 | 41,196 | 43.91% |
| Denver, Colorado | 93,245 | 51,086 | 54.79% |
| Clark, Washington | 92,739 | 56,897 | 61.35% |
| Washington, Oregon | 92,493 | 56,092 | 60.64% |
| Ramsey, Minnesota | 92,459 | 46,778 | 50.59% |
| Morris, New Jersey | 92,164 | 24,617 | 26.71% |
| Washoe, Nevada | 91,978 | 31,392 | 34.13% |
| Sedgwick, Kansas | 91,626 | 26,890 | 29.35% |
| Knox, Tennessee | 91,477 | 42,076 | 46.00% |
| Genesee, Michigan | 91,366 | 50,733 | 55.53% |
| Richmond, New York | 91,030 | 37,441 | 41.13% |
| Burlington, New Jersey | 90,988 | 31,046 | 34.12% |
| Dane, Wisconsin | 90,857 | 28,227 | 31.07% |
| Lane, Oregon | 90,646 | 49,418 | 54.52% |
| Douglas, Nebraska | 90,199 | 30,438 | 33.75% |
| Pinal, Arizona | 90,167 | 39,004 | 43.26% |
| Waukesha, Wisconsin | 89,297 | 43,462 | 48.67% |
| Jefferson, Louisiana | 89,217 | 56,757 | 63.62% |
| Stanislaus, California | 88,973 | 44,107 | 49.57% |
| Clackamas, Oregon | 87,976 | 55,626 | 63.23% |
| Placer, California | 87,677 | 44,791 | 51.09% |
| Union, New Jersey | 87,575 | 33,273 | 37.99% |
| Stark, Ohio | 86,939 | 52,037 | 59.85% |
| Lucas, Ohio | 86,804 | 43,292 | 49.87% |
| Berks, Pennsylvania | 86,265 | 33,107 | 38.38% |
| Ada, Idaho | 85,925 | 44,377 | 51.65% |
| Mobile, Alabama | 85,676 | 51,169 | 59.72% |
| Yavapai, Arizona | 85,548 | 27,529 | 32.18% |
| Passaic, New Jersey | 85,185 | 33,010 | 38.75% |
| Williamson, Texas | 83,681 | 30,718 | 36.71% |
| St. Lucie, Florida | 83,034 | 38,655 | 46.55% |
| Seminole, Florida | 82,956 | 39,292 | 47.36% |
| Hudson, New Jersey | 82,649 | 35,010 | 42.36% |
| Solano, California | 82,530 | 38,961 | 47.21% |
| San Juan, Puerto Rico | 81,832 | 55,253 | 67.52% |
| Hillsborough, New Hampshire | 81,661 | 19,637 | 24.05% |
| Kane, Illinois | 81,421 | 24,042 | 29.53% |
| Pulaski, Arkansas | 79,557 | 22,489 | 28.27% |
| Santa Barbara, California | 78,678 | 12,999 | 16.52% |
| Barnstable, Massachusetts | 78,539 | 13,947 | 17.76% |
| Polk, Iowa | 78,152 | 24,647 | 31.54% |
| Charleston, South Carolina | 76,851 | 20,249 | 26.35% |
| East Baton Rouge, Louisiana | 76,846 | 40,281 | 52.42% |
| Virginia Beach City, Virginia | 76,520 | 17,123 | 22.38% |
| Lehigh, Pennsylvania | 75,809 | 28,747 | 37.92% |
| Sussex, Delaware | 75,363 | 11,968 | 15.88% |
| Luzerne, Pennsylvania | 75,140 | 23,741 | 31.60% |
| Hamilton, Tennessee | 75,060 | 34,067 | 45.39% |
| Sumter, Florida | 74,784 | 35,381 | 47.31% |
| Forsyth, North Carolina | 74,040 | 42,586 | 57.52% |
| St. Charles, Missouri | 72,609 | 35,777 | 49.27% |
| Dakota, Minnesota | 72,452 | 36,290 | 50.09% |
| Escambia, Florida | 71,669 | 27,198 | 37.95% |
| Charlotte, Florida | 71,534 | 29,804 | 41.66% |
| Northampton, Pennsylvania | 69,995 | 24,131 | 34.48% |
| Butler, Ohio | 69,352 | 32,106 | 46.29% |
| Lorain, Ohio | 69,032 | 32,798 | 47.51% |
| Rockingham, New Hampshire | 68,838 | 14,458 | 21.00% |
| Mohave, Arizona | 68,760 | 24,647 | 35.84% |
| Richland, South Carolina | 68,595 | 20,016 | 29.18% |
| Madison, Alabama | 68,223 | 22,858 | 33.50% |
| Allen, Indiana | 68,210 | 36,312 | 53.24% |
| Monterey, California | 67,397 | 6,860 | 10.18% |