| Uab | 159 | $172,850 |
| Ual United Airlines | 102 | $27,278 |
| Uams | 122 | $146,876 |
| Uber | 405 | $692,504 |
| Ubs | 279 | $804,959 |
| Uc | 107 | $214,157 |
| Ucb | 179 | $148,260 |
| Uc Berkeley | 563 | $1,904,201 |
| Uc Davis | 312 | $700,255 |
| Uchealth | 170 | $113,567 |
| Uci | 101 | $161,329 |
| Uc Irvine | 128 | $189,233 |
| Ucla | 853 | $1,605,504 |
| Uc San Diego | 157 | $400,820 |
| Ucsb | 108 | $138,714 |
| Ucsd | 301 | $526,061 |
| Ucsf | 860 | $3,901,808 |
| Uec Ameren Missouri | 124 | $117,623 |
| Ufcw Local No 3000 | 219 | $34,867 |
| Uhc | 137 | $100,509 |
| Uhg | 138 | $120,226 |
| Uhs | 123 | $117,185 |
| Uhs of Delaware | 164 | $113,476 |
| Unc | 235 | $303,138 |
| Unc Chapel Hill | 147 | $179,914 |
| Union Pacific | 449 | $218,695 |
| United | 200 | $238,555 |
| United Airlines | 3,981 | $3,849,602 |
| United Bank | 232 | $159,903 |
| United Healthcare | 161 | $122,713 |
| Unitedhealthcare | 155 | $118,546 |
| United Healthcare Services | 894 | $1,992,246 |
| Unitedhealth Group | 106 | $115,977 |
| United Methodist Church | 194 | $152,414 |
| United Nations | 108 | $99,595 |
| United Parcel Service | 5,959 | $1,849,563 |
| United Services Automobile Asn | 551 | $637,803 |
| United States Air Force | 108 | $97,696 |
| United States Postal Service | 483 | $432,558 |
| United States Steel | 776 | $253,941 |
| United States Sugar | 178 | $139,187 |
| Unite Here | 139 | $108,839 |
| Universal Music Group | 135 | $363,082 |
| University | 529 | $500,292 |
| University Hospitals | 136 | $222,122 |
| University of Arizona | 397 | $499,106 |
| University of California | 917 | $2,430,041 |
| University of California Irvine | 107 | $189,200 |
| University of Chicago | 593 | $1,683,984 |
| University of Cincinnati | 203 | $321,805 |
| University of Colorado | 531 | $833,233 |
| University of Connecticut | 138 | $228,356 |
| University of Delaware | 182 | $320,289 |
| University of Denver | 130 | $234,087 |
| University of Florida | 357 | $468,786 |
| University of Georgia | 151 | $335,448 |
| University of Hawaii | 126 | $343,762 |
| University of Houston | 130 | $180,617 |
| University of Illinois | 332 | $437,778 |
| University of Iowa | 332 | $487,250 |
| University of Kansas | 171 | $311,437 |
| University of Kentucky | 214 | $222,137 |
| University of Louisville | 113 | $148,224 |
| University of Maryland | 489 | $883,328 |
| University of Massachusetts | 126 | $132,966 |
| University of Miami | 300 | $499,892 |
| University of Michigan | 1,111 | $2,371,776 |
| University of Minnesota | 657 | $1,340,788 |
| University of Missouri | 174 | $221,872 |
| University of Nebraska | 102 | $146,148 |
| University of New Mexico | 210 | $504,676 |
| University of North Carolina | 109 | $374,372 |
| University of Notre Dame | 149 | $214,174 |
| University of Oklahoma | 160 | $212,971 |
| University of Oregon | 219 | $313,276 |
| University of Pennsylvania | 713 | $1,525,047 |
| University of Pittsburgh | 406 | $711,621 |
| University of Rochester | 307 | $408,376 |
| University of Southern California | 297 | $585,409 |
| University of Tennessee | 142 | $145,341 |
| University of Texas | 250 | $465,048 |
| University of Texas At Austin | 216 | $401,975 |
| University of Utah | 469 | $628,350 |
| University of Vermont | 100 | $90,541 |
| University of Virginia | 306 | $541,557 |
| University of Washington | 1,018 | $2,469,041 |
| University of Wisconsin | 305 | $513,748 |
| University of Wisconsin Madison | 205 | $429,593 |
| Unum | 368 | $462,358 |
| Upmc | 557 | $670,444 |
| Up Railroad | 1,553 | $1,811,878 |
| Ups | 1,031 | $846,146 |
| USA | 145 | $174,646 |
| Usaa | 287 | $244,625 |
| Usace | 107 | $82,816 |
| Usacs | 104 | $208,875 |
| Usacs Medical Group | 126 | $178,643 |
| Usaf | 911 | $746,444 |
| Usaid | 260 | $333,013 |
| US Air Force | 299 | $205,374 |
| Usap | 486 | $901,319 |
| U S Army | 320 | $315,690 |
| US Army | 1,245 | $1,136,168 |
| US Army Corps of Engineers | 109 | $106,277 |
| US Bancorp | 822 | $862,255 |
| U S Bank | 177 | $166,608 |
| US Bank | 277 | $290,691 |
| Usc | 376 | $614,527 |
| Uscc Services | 101 | $150,488 |
| Usda | 582 | $615,727 |
| US Department of Agriculture | 139 | $56,569 |
| U S Department of Defense | 110 | $54,766 |
| U S Department of Justice | 132 | $222,448 |
| U S Department of State | 236 | $499,086 |
| US Department of State | 171 | $655,556 |
| US Epa | 190 | $457,872 |
| Usg | 412 | $584,726 |
| US Gov | 152 | $142,116 |
| U S Government | 305 | $746,880 |
| US Government | 862 | $1,250,130 |
| US Govt | 210 | $243,417 |
| U S House of Representatives | 141 | $1,433,462 |
| US House of Representatives | 223 | $2,425,219 |
| Usi | 104 | $156,427 |
| Usmc | 155 | $170,019 |
| Usn | 183 | $147,788 |
| U S Navy | 168 | $147,009 |
| US Navy | 779 | $803,466 |
| US Novartis Pharmaceuticals | 151 | $169,798 |
| U S Postal Service | 125 | $85,585 |
| US Postal Service | 427 | $326,332 |
| Usps | 8,554 | $3,401,653 |
| Uspto | 159 | $263,121 |
| US Senate | 170 | $5,354,314 |
| Uswa Intl | 548 | $441,870 |
| Ut Austin | 125 | $169,997 |
| Ut Southwestern Medical Center | 103 | $215,017 |
| Uva | 136 | $221,540 |
| Uw | 199 | $218,408 |
| Uw Health | 168 | $369,068 |
| Uw Madison | 315 | $492,599 |