Mendocino County, California
Precinct data
Results by precinct
165 precincts · 39,057 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -100003100003 | 369 | 479 | 53 | 901 | 41.0% | 53.2% | R+12.2 |
|---|---|---|---|---|---|---|---|
| Precinct -400005400005 | 586 | 211 | 25 | 822 | 71.3% | 25.7% | D+45.6 |
| Precinct -300006300006 | 476 | 287 | 38 | 801 | 59.4% | 35.8% | D+23.6 |
| Precinct -200002200002 | 528 | 221 | 28 | 777 | 68.0% | 28.4% | D+39.5 |
| Precinct -500005500005 | 544 | 186 | 39 | 769 | 70.7% | 24.2% | D+46.6 |
| Precinct -400002400002 | 478 | 242 | 45 | 765 | 62.5% | 31.6% | D+30.8 |
| Precinct -999405999405 | 467 | 261 | 26 | 754 | 61.9% | 34.6% | D+27.3 |
| Precinct -400004400004 | 488 | 219 | 23 | 730 | 66.8% | 30.0% | D+36.8 |
| Precinct -300002300002 | 391 | 295 | 32 | 718 | 54.5% | 41.1% | D+13.4 |
| Precinct -999423999423 | 515 | 151 | 28 | 694 | 74.2% | 21.8% | D+52.4 |
| Precinct -500004500004 | 549 | 109 | 28 | 686 | 80.0% | 15.9% | D+64.1 |
| Precinct -300001300001 | 357 | 292 | 24 | 673 | 53.0% | 43.4% | D+9.7 |
| Precinct -999507999507 | 528 | 118 | 27 | 673 | 78.5% | 17.5% | D+60.9 |
| Precinct -400001400001 | 434 | 198 | 23 | 655 | 66.3% | 30.2% | D+36.0 |
| Precinct -500007500007 | 512 | 116 | 24 | 652 | 78.5% | 17.8% | D+60.7 |
| Precinct -300008300008 | 383 | 207 | 29 | 619 | 61.9% | 33.4% | D+28.4 |
| Precinct -100004100004 | 269 | 327 | 18 | 614 | 43.8% | 53.3% | R+9.4 |
| Precinct -999318999318 | 343 | 216 | 33 | 592 | 57.9% | 36.5% | D+21.5 |
| Precinct -999415999415 | 391 | 178 | 22 | 591 | 66.2% | 30.1% | D+36.0 |
| Precinct -999424999424 | 421 | 143 | 24 | 588 | 71.6% | 24.3% | D+47.3 |
| Precinct -300007300007 | 324 | 233 | 26 | 583 | 55.6% | 40.0% | D+15.6 |
| Precinct -999204999204 | 356 | 162 | 32 | 550 | 64.7% | 29.5% | D+35.3 |
| Precinct -100006100006 | 322 | 202 | 21 | 545 | 59.1% | 37.1% | D+22.0 |
| Precinct -300003300003 | 321 | 206 | 18 | 545 | 58.9% | 37.8% | D+21.1 |
| Precinct -300004300004 | 250 | 258 | 16 | 524 | 47.7% | 49.2% | R+1.5 |
| Precinct -999212999212 | 301 | 188 | 27 | 516 | 58.3% | 36.4% | D+21.9 |
| Precinct -100001100001 | 254 | 248 | 12 | 514 | 49.4% | 48.2% | D+1.2 |
| Precinct -100009100009 | 178 | 301 | 22 | 501 | 35.5% | 60.1% | R+24.6 |
| Precinct -300005300005 | 262 | 196 | 23 | 481 | 54.5% | 40.7% | D+13.7 |
| Precinct -999108999108 | 239 | 224 | 16 | 479 | 49.9% | 46.8% | D+3.1 |
| Precinct -200001200001 | 242 | 208 | 14 | 464 | 52.2% | 44.8% | D+7.3 |
| Precinct -999516999516 | 238 | 201 | 25 | 464 | 51.3% | 43.3% | D+8.0 |
| Precinct -200004200004 | 281 | 148 | 15 | 444 | 63.3% | 33.3% | D+30.0 |
| Precinct -999501999501 | 365 | 50 | 25 | 440 | 83.0% | 11.4% | D+71.6 |
| Precinct -500002500002 | 364 | 53 | 17 | 434 | 83.9% | 12.2% | D+71.7 |
| Precinct -999409999409 | 297 | 121 | 10 | 428 | 69.4% | 28.3% | D+41.1 |
| Precinct -999304999304 | 217 | 186 | 24 | 427 | 50.8% | 43.6% | D+7.3 |
| Precinct -999208999208 | 246 | 156 | 19 | 421 | 58.4% | 37.1% | D+21.4 |
| Precinct -999214999214 | 283 | 117 | 16 | 416 | 68.0% | 28.1% | D+39.9 |
| Precinct -200003200003 | 238 | 137 | 22 | 397 | 59.9% | 34.5% | D+25.4 |
| Precinct -999201999201 | 213 | 163 | 13 | 389 | 54.8% | 41.9% | D+12.9 |
| Precinct -999513999513 | 295 | 82 | 12 | 389 | 75.8% | 21.1% | D+54.8 |
| Precinct -500008500008 | 285 | 80 | 9 | 374 | 76.2% | 21.4% | D+54.8 |
| Precinct -999102999102 | 196 | 164 | 12 | 372 | 52.7% | 44.1% | D+8.6 |
| Precinct -100008100008 | 200 | 151 | 17 | 368 | 54.3% | 41.0% | D+13.3 |
| Precinct -400006400006 | 284 | 56 | 15 | 355 | 80.0% | 15.8% | D+64.2 |
| Precinct -100500100500 | 183 | 149 | 6 | 338 | 54.1% | 44.1% | D+10.1 |
| Precinct -999213999213 | 211 | 95 | 26 | 332 | 63.6% | 28.6% | D+34.9 |
| Precinct -999205999205 | 163 | 145 | 6 | 314 | 51.9% | 46.2% | D+5.7 |
| Precinct -999313999313 | 160 | 123 | 26 | 309 | 51.8% | 39.8% | D+12.0 |
| Precinct -999150999150 | 150 | 152 | 5 | 307 | 48.9% | 49.5% | R+0.7 |
| Precinct -999124999124 | 165 | 133 | 4 | 302 | 54.6% | 44.0% | D+10.6 |
| Precinct -500006500006 | 207 | 78 | 14 | 299 | 69.2% | 26.1% | D+43.1 |
| Precinct -100005100005 | 154 | 122 | 6 | 282 | 54.6% | 43.3% | D+11.3 |
| Precinct -999510999510 | 192 | 73 | 9 | 274 | 70.1% | 26.6% | D+43.4 |
| Precinct -999427999427 | 188 | 74 | 10 | 272 | 69.1% | 27.2% | D+41.9 |
| Precinct -500003500003 | 170 | 69 | 26 | 265 | 64.2% | 26.0% | D+38.1 |
| Precinct -100007100007 | 153 | 97 | 13 | 263 | 58.2% | 36.9% | D+21.3 |
| Precinct -500009500009 | 160 | 88 | 10 | 258 | 62.0% | 34.1% | D+27.9 |
| Precinct -400007400007 | 190 | 50 | 7 | 247 | 76.9% | 20.2% | D+56.7 |
| Precinct -400003400003 | 163 | 74 | 8 | 245 | 66.5% | 30.2% | D+36.3 |
| Precinct -999307999307 | 120 | 113 | 11 | 244 | 49.2% | 46.3% | D+2.9 |
| Precinct -500001500001 | 173 | 52 | 8 | 233 | 74.2% | 22.3% | D+51.9 |
| Precinct -999211999211 | 145 | 78 | 8 | 231 | 62.8% | 33.8% | D+29.0 |
| Precinct -100002100002 | 116 | 110 | 4 | 230 | 50.4% | 47.8% | D+2.6 |
| Precinct -999115999115 | 103 | 100 | 6 | 209 | 49.3% | 47.8% | D+1.4 |
| Precinct -999207999207 | 107 | 88 | 9 | 204 | 52.5% | 43.1% | D+9.3 |
| Precinct -999505999505 | 152 | 40 | 12 | 204 | 74.5% | 19.6% | D+54.9 |
| Precinct -999514999514 | 153 | 33 | 16 | 202 | 75.7% | 16.3% | D+59.4 |
| Precinct -999216999216 | 120 | 70 | 9 | 199 | 60.3% | 35.2% | D+25.1 |
| Precinct -999109999109 | 108 | 79 | 10 | 197 | 54.8% | 40.1% | D+14.7 |
| Precinct -999526999526 | 131 | 54 | 8 | 193 | 67.9% | 28.0% | D+39.9 |
| Precinct -999314999314 | 140 | 40 | 8 | 188 | 74.5% | 21.3% | D+53.2 |
| Precinct -999428999428 | 120 | 55 | 8 | 183 | 65.6% | 30.1% | D+35.5 |
| Precinct -999519999519 | 137 | 35 | 10 | 182 | 75.3% | 19.2% | D+56.0 |
| Precinct -999544999544 | 83 | 83 | 9 | 175 | 47.4% | 47.4% | Even |
| Precinct -999221999221 | 91 | 78 | 5 | 174 | 52.3% | 44.8% | D+7.5 |
| Precinct -999116999116 | 88 | 70 | 9 | 167 | 52.7% | 41.9% | D+10.8 |
| Precinct -999404999404 | 94 | 60 | 13 | 167 | 56.3% | 35.9% | D+20.4 |
| Precinct -999225999225 | 91 | 62 | 9 | 162 | 56.2% | 38.3% | D+17.9 |
| Precinct -999215999215 | 92 | 62 | 3 | 157 | 58.6% | 39.5% | D+19.1 |
| Precinct -999224999224 | 85 | 65 | 2 | 152 | 55.9% | 42.8% | D+13.2 |
| Precinct -999110999110 | 78 | 64 | 3 | 145 | 53.8% | 44.1% | D+9.7 |
| Precinct -999121999121 | 91 | 41 | 4 | 136 | 66.9% | 30.1% | D+36.8 |
| Precinct -999563999563 | 108 | 23 | 5 | 136 | 79.4% | 16.9% | D+62.5 |
| Precinct -999562999562 | 63 | 57 | 9 | 129 | 48.8% | 44.2% | D+4.7 |
| Precinct -999142999142 | 52 | 70 | 6 | 128 | 40.6% | 54.7% | R+14.1 |
| Precinct -999522999522 | 92 | 25 | 11 | 128 | 71.9% | 19.5% | D+52.3 |
| Precinct -999111999111 | 73 | 50 | 1 | 124 | 58.9% | 40.3% | D+18.5 |
| Precinct -999425999425 | 77 | 40 | 6 | 123 | 62.6% | 32.5% | D+30.1 |
| Precinct -999436999436 | 94 | 20 | 4 | 118 | 79.7% | 16.9% | D+62.7 |
| Precinct -999533999533 | 54 | 58 | 2 | 114 | 47.4% | 50.9% | R+3.5 |
| Precinct -999320999320 | 52 | 52 | 5 | 109 | 47.7% | 47.7% | Even |
| Precinct -999112999112 | 41 | 64 | 3 | 108 | 38.0% | 59.3% | R+21.3 |
| Precinct -999227999227 | 73 | 33 | 0 | 106 | 68.9% | 31.1% | D+37.7 |
| Precinct -999220999220 | 64 | 38 | 2 | 104 | 61.5% | 36.5% | D+25.0 |
| Precinct -999407999407 | 78 | 20 | 6 | 104 | 75.0% | 19.2% | D+55.8 |
| Precinct -999203999203 | 49 | 48 | 6 | 103 | 47.6% | 46.6% | D+1.0 |
| Precinct -999309999309 | 57 | 38 | 7 | 102 | 55.9% | 37.3% | D+18.6 |
| Precinct -999542999542 | 36 | 60 | 3 | 99 | 36.4% | 60.6% | R+24.2 |
| Precinct -999429999429 | 69 | 23 | 5 | 97 | 71.1% | 23.7% | D+47.4 |
| Precinct -999439999439 | 56 | 35 | 6 | 97 | 57.7% | 36.1% | D+21.6 |
| Precinct -999151999151 | 25 | 57 | 5 | 87 | 28.7% | 65.5% | R+36.8 |
| Precinct -999315999315 | 58 | 20 | 8 | 86 | 67.4% | 23.3% | D+44.2 |
| Precinct -999206999206 | 55 | 26 | 4 | 85 | 64.7% | 30.6% | D+34.1 |
| Precinct -999321999321 | 45 | 33 | 7 | 85 | 52.9% | 38.8% | D+14.1 |
| Precinct -999303999303 | 58 | 20 | 6 | 84 | 69.0% | 23.8% | D+45.2 |
| Precinct -999539999539 | 43 | 35 | 5 | 83 | 51.8% | 42.2% | D+9.6 |
| Precinct -999555999555 | 47 | 34 | 2 | 83 | 56.6% | 41.0% | D+15.7 |
| Precinct -999103999103 | 38 | 43 | 1 | 82 | 46.3% | 52.4% | R+6.1 |
| Precinct -999426999426 | 53 | 28 | 1 | 82 | 64.6% | 34.1% | D+30.5 |
| Precinct -999105999105 | 36 | 40 | 2 | 78 | 46.2% | 51.3% | R+5.1 |
| Precinct -999306999306 | 52 | 20 | 6 | 78 | 66.7% | 25.6% | D+41.0 |
| Precinct -999132999132 | 40 | 32 | 3 | 75 | 53.3% | 42.7% | D+10.7 |
| Precinct -999520999520 | 51 | 14 | 4 | 69 | 73.9% | 20.3% | D+53.6 |
| Precinct -999312999312 | 39 | 24 | 4 | 67 | 58.2% | 35.8% | D+22.4 |
| Precinct -999508999508 | 59 | 7 | 0 | 66 | 89.4% | 10.6% | D+78.8 |
| Precinct -999538999538 | 34 | 28 | 1 | 63 | 54.0% | 44.4% | D+9.5 |
| Precinct -999152999152 | 25 | 33 | 2 | 60 | 41.7% | 55.0% | R+13.3 |
| Precinct -999218999218 | 28 | 31 | 0 | 59 | 47.5% | 52.5% | R+5.1 |
| Precinct -999140999140 | 20 | 32 | 3 | 55 | 36.4% | 58.2% | R+21.8 |
| Precinct -999401999401 | 29 | 24 | 2 | 55 | 52.7% | 43.6% | D+9.1 |
| Precinct -999438999438 | 28 | 20 | 4 | 52 | 53.8% | 38.5% | D+15.4 |
| Precinct -999506999506 | 40 | 5 | 3 | 48 | 83.3% | 10.4% | D+72.9 |
| Precinct -999532999532 | 29 | 10 | 7 | 46 | 63.0% | 21.7% | D+41.3 |
| Precinct -999543999543 | 25 | 20 | 1 | 46 | 54.3% | 43.5% | D+10.9 |
| Precinct -999557999557 | 30 | 14 | 1 | 45 | 66.7% | 31.1% | D+35.6 |
| Precinct -999551999551 | 32 | 3 | 2 | 37 | 86.5% | 8.1% | D+78.4 |
| Precinct -999305999305 | 25 | 7 | 3 | 35 | 71.4% | 20.0% | D+51.4 |
| Precinct -999406999406 | 23 | 10 | 0 | 33 | 69.7% | 30.3% | D+39.4 |
| Precinct -999518999518 | 28 | 3 | 2 | 33 | 84.8% | 9.1% | D+75.8 |
| Precinct -999411999411 | 22 | 9 | 1 | 32 | 68.8% | 28.1% | D+40.6 |
| Precinct -999421999421 | 24 | 4 | 3 | 31 | 77.4% | 12.9% | D+64.5 |
| Precinct -999432999432 | 19 | 12 | 0 | 31 | 61.3% | 38.7% | D+22.6 |
| Precinct -999523999523 | 17 | 12 | 2 | 31 | 54.8% | 38.7% | D+16.1 |
| Precinct -999528999528 | 10 | 18 | 2 | 30 | 33.3% | 60.0% | R+26.7 |
| Precinct -999126999126 | 19 | 8 | 0 | 27 | 70.4% | 29.6% | D+40.7 |
| Precinct -999541999541 | 12 | 13 | 2 | 27 | 44.4% | 48.1% | R+3.7 |
| Precinct -999125999125 | 10 | 16 | 0 | 26 | 38.5% | 61.5% | R+23.1 |
| Precinct -999540999540 | 19 | 7 | 0 | 26 | 73.1% | 26.9% | D+46.2 |
| Precinct -999437999437 | 11 | 8 | 3 | 22 | 50.0% | 36.4% | D+13.6 |
| Precinct -999311999311 | 13 | 8 | 0 | 21 | 61.9% | 38.1% | D+23.8 |
| Precinct -999301999301 | 15 | 5 | 0 | 20 | 75.0% | 25.0% | D+50.0 |
| Precinct -999530999530 | 14 | 5 | 1 | 20 | 70.0% | 25.0% | D+45.0 |
| Precinct -999559999559 | 7 | 13 | 0 | 20 | 35.0% | 65.0% | R+30.0 |
| Precinct -999129999129 | 8 | 11 | 0 | 19 | 42.1% | 57.9% | R+15.8 |
| Precinct -999525999525 | 14 | 4 | 1 | 19 | 73.7% | 21.1% | D+52.6 |
| Precinct -999316999316 | 14 | 2 | 1 | 17 | 82.4% | 11.8% | D+70.6 |
| Precinct -999403999403 | 13 | 3 | 0 | 16 | 81.3% | 18.8% | D+62.5 |
| Precinct -999123999123 | 2 | 12 | 1 | 15 | 13.3% | 80.0% | R+66.7 |
| Precinct -999512999512 | 10 | 4 | 1 | 15 | 66.7% | 26.7% | D+40.0 |
| Precinct -999117999117 | 11 | 3 | 0 | 14 | 78.6% | 21.4% | D+57.1 |
| Precinct -999131999131 | 7 | 7 | 0 | 14 | 50.0% | 50.0% | Even |
| Precinct -999138999138 | 3 | 11 | 0 | 14 | 21.4% | 78.6% | R+57.1 |
| Precinct -999148999148 | 8 | 6 | 0 | 14 | 57.1% | 42.9% | D+14.3 |
| Precinct -999535999535 | 7 | 6 | 1 | 14 | 50.0% | 42.9% | D+7.1 |
| Precinct -999416999416 | 10 | 2 | 1 | 13 | 76.9% | 15.4% | D+61.5 |
| Precinct -999527999527 | 8 | 5 | 0 | 13 | 61.5% | 38.5% | D+23.1 |
| Precinct -999118999118 | 4 | 8 | 0 | 12 | 33.3% | 66.7% | R+33.3 |
| Precinct -999130999130 | 4 | 4 | 4 | 12 | 33.3% | 33.3% | Even |
| Precinct -999146999146 | 8 | 2 | 1 | 11 | 72.7% | 18.2% | D+54.5 |
| Precinct -999413999413 | 1 | 9 | 0 | 10 | 10.0% | 90.0% | R+80.0 |
| Precinct -999515999515 | 4 | 6 | 0 | 10 | 40.0% | 60.0% | R+20.0 |
| Precinct -999531999531 | 10 | 0 | 0 | 10 | 100.0% | 0.0% | D+100.0 |
| Precinct -999558999558 | 8 | 1 | 1 | 10 | 80.0% | 10.0% | D+70.0 |
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | +16.0% |
| 1880 | +15.0% |
| 1884 | +9.0% |
| 1888 | +7.7% |
| 1892 | +7.7% |
| 1896 | +0.6% |
| 1900 | −8.0% |
| 1904 | −30.0% |
| 1908 | −20.1% |
| 1912 | +44.4% |
| 1916 | −1.6% |
| 1920 | −39.3% |
| 1924 | −44.4% |
| 1928 | −28.8% |
| 1932 | +26.2% |
| 1936 | +26.9% |
| 1940 | +13.6% |
| 1944 | +7.9% |
| 1948 | −6.5% |
| 1952 | −22.2% |
| 1956 | −14.1% |
| 1960 | +0.9% |
| 1964 | +30.4% |
| 1968 | −2.1% |
| 1972 | −7.8% |
| 1976 | +4.0% |
| 1980 | −5.8% |
| 1984 | −6.2% |
| 1988 | +13.5% |
| 1992 | +28.4% |
| 1996 | +15.9% |
| 2000 | +12.7% |
| 2004 | +29.7% |
| 2008 | +42.6% |
| 2012 | +38.5% |
| 2016 | +29.5% |
| 2020 | +35.8% |
| 2024 | +26.8% |
U.S. Senate
Registered voters
By party of registration, over time
Registration and the presidential vote track closely here — within 1.8 points.
53,748 registered voters · 2024 · up from 53,009 in 2022
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−741 net domestic migration · 2025
Net −5,726 over 2011–2025 · gain loss
Arrivals reported $68,212 in average income, against $71,843 for residents who stayed — 5% lower. (IRS SOI, 2022–23)
The places arrivals came from lean D+34.0 on average — 7.1 points more Democratic-leaning than Mendocino County, CA itself (D+26.8).
Where arrivals came from lean of each source
- Sonoma County, CA231D+46.2
- Lake County, CA122R+1.4
- Alameda County, CA59D+53.6
- Sacramento County, CA57D+19.7
- Los Angeles County, CA55D+32.9
- Humboldt County, CA48D+28.4
Where departures went households, 2022–23
- Sonoma County, CA259
- Lake County, CA141
- Sacramento County, CA68
- Los Angeles County, CA50
- San Francisco County, CA43
- Alameda County, CA41
Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.
| Year | Net domestic migration |
|---|---|
| 2011 | −652 |
| 2012 | −309 |
| 2013 | −443 |
| 2014 | −19 |
| 2015 | −272 |
| 2016 | +39 |
| 2017 | +157 |
| 2018 | −213 |
| 2019 | −660 |
| 2021 | +6 |
| 2022 | −1,225 |
| 2023 | −867 |
| 2024 | −527 |
| 2025 | −741 |
Mendocino's sparse population, rugged Pacific coastline, and long-established counterculture communities have anchored its Democratic lean for decades, with 2024's D+26.8 margin consistent with its recent presidential-cycle pattern.
Across the recorded series it reached a Democratic high of 44.4 points in 1912 and a Republican high of 44.4 points in 1924. Between 2020 and 2024 the county moved 9.0 points toward the Republican candidate; the 2024 margin was 26.8 points.
A population of 90,244, a 61% non-Hispanic-white share, and a median household income of $68,092 describe the county. The county's voting pattern over the last decade is most similar to that of Sonoma County and Santa Cruz County.
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Mendocino County, California. Akashic. https://akashic.app/county/06045/. Accessed May 20, 2026. License: CC BY 4.0.