(CO-99-13) Population Estimates for Counties by Age Group: July 1, 1991 Source: Population Estimates Program, Population Division, U.S. Census Bureau, Washington, DC 20233 Contact: Statistical Information Staff, Population Division, U.S. Census Bureau (301-457-2422) pop@census.gov (please include a phone number with email correspondence) Internet Release Date: August 30, 2000 Total Ages Ages Ages Ages Ages Ages Ages Ages Ages Area Name Population 0-4 5-17 18-24 25-44 45-64 16+ 21+ 65+ 85+ CALIFORNIA 30414114 2664214 5548528 3327546 10522961 5146909 22976856 20863139 3203956 308530 Alameda County 1315144 107688 220685 139791 480926 227374 1017574 931091 138680 14250 Alpine County 1158 86 204 106 447 236 893 831 79 5 Amador County 31262 1677 4477 3003 9990 6620 25710 23753 5495 470 Butte County 186851 13887 32155 24411 53081 31574 144929 130656 31743 2928 Calaveras County 34030 2411 6299 1621 9906 7950 26142 24597 5843 410 Colusa County 16596 1489 3756 1419 4917 2935 11871 10720 2080 193 Contra Costa County 822332 66609 146362 69946 288233 160688 629487 580424 90494 8247 Del Norte County 25849 2063 5175 2260 8757 4482 19233 17790 3112 220 El Dorado County 133480 10609 25667 8480 46815 25844 100385 93434 16065 1068 Fresno County 688511 70573 152236 73502 214404 106977 485181 435633 70819 7128 Glenn County 25199 2318 5608 2018 7287 4414 18015 16408 3554 374 Humboldt County 120612 9278 22693 12589 40212 20850 91451 83049 14990 1371 Imperial County 117663 11652 29705 11211 34141 19381 80559 71131 11573 844 Inyo County 18321 1274 3287 972 5382 3993 14176 13339 3413 365 Kern County 569829 59251 124858 55152 186093 90316 401195 363019 54159 4317 Kings County 104357 10373 21927 12735 36924 14354 74787 67525 8044 694 Lake County 52802 3883 9290 2824 14338 10921 40757 38403 11546 843 Lassen County 28038 1940 5193 3075 10249 4696 21596 19758 2885 229 Los Angeles County 8931985 807722 1614962 1052766 3113048 1472220 6747676 6091200 871267 87107 Madera County 95042 8452 21191 8812 28595 16577 68209 61426 11415 993 Marin County 232088 14793 31020 16708 87749 52880 190895 180002 28938 2929 Mariposa County 14862 1009 2517 899 4479 3464 11673 10948 2494 186 Mendocino County 81543 6431 16498 5763 26223 15527 60791 56041 11101 1015 Merced County 185381 20566 44518 19251 56482 27797 125910 112346 16767 1392 Modoc County 9693 680 2038 552 2763 2020 7248 6718 1640 158 Mono County 9806 861 1613 879 4142 1680 7541 7018 631 42 Monterey County 361559 34593 68525 45080 123664 54504 267662 240323 35193 3445 Napa County 111897 8082 18712 9768 34922 21739 87703 80822 18674 2187 Nevada County 81419 5437 14865 4212 25126 16973 62985 59107 14806 1143 Orange County 2445044 204329 416609 291008 869958 435367 1888438 1710601 227773 24083 Placer County 181342 14302 34928 13140 62068 35955 136655 126183 20949 2028 Plumas County 20095 1383 3867 951 5893 4588 15316 14372 3413 230 Riverside County 1248277 121771 247775 116762 402049 200063 910315 830221 159857 13415 Sacramento County 1103715 96361 206875 109759 387720 188131 827111 758226 114869 10269 San Benito County 37305 3555 8337 3524 12132 6067 26528 23885 3690 352 San Bernardino County 1491021 157616 321134 153124 508775 222133 1053083 949371 128239 11268 San Diego County 2554271 216104 432347 329554 895633 400600 1965625 1774941 280033 25971 San Francisco County 725237 38897 83045 73468 287006 137606 616567 579187 105215 12059 San Joaquin County 494221 47369 103995 48943 158675 80757 356556 322219 54482 5353 San Luis Obispo County 219091 15180 34646 30057 71798 36005 173977 156298 31405 2856 San Mateo County 654577 48973 99566 59838 233847 130388 520506 483465 81965 7791 Santa Barbara County 374051 29747 60596 52370 122270 62658 292262 260391 46410 5223 Santa Clara County 1508020 122040 251644 164680 562208 272702 1171021 1069005 134746 12683 Santa Cruz County 228984 17909 38710 27035 83328 36400 177892 160149 25602 3076 Shasta County 154034 12737 31101 11556 46703 30487 114385 104994 21450 1728 Sierra County 3318 246 651 144 974 720 2503 2356 583 57 Siskiyou County 43917 3160 8920 2679 12862 9033 32996 30526 7263 649 Solano County 354889 33171 72068 34353 129752 56730 258792 235671 28815 2214 Sonoma County 396592 31243 70042 33752 139130 69295 304493 280924 53130 5367 Stanislaus County 385831 38330 83867 35800 124027 62763 274206 248842 41044 4013 Sutter County 67159 6065 13772 5945 20464 13068 49209 44854 7845 679 Tehama County 51025 4047 10319 3507 14195 10479 38022 35142 8478 781 Trinity County 13087 950 2597 714 4000 2866 9898 9233 1960 134 Tulare County 322884 33030 77222 31135 95963 51373 222664 198938 34161 3199 Tuolumne County 50105 3090 8521 3638 16310 10186 39562 37054 8360 596 Ventura County 675485 58770 131937 68400 232169 119566 503564 455517 64643 6007 Yolo County 143853 11484 24523 25968 45841 22165 111105 95694 13872 1404 Yuba County 59375 6668 12878 5937 17916 9772 41371 37368 6204 492 The estimates presented here were produced by a method which is still in a developmental stage. They may not be accurate for populations which are very small or have unusual distributions. These figures should be used with caution.