Last official estimated population of San Diego County was 3,104,543 (year 2014)[1]. This was 0.974% of total US population and 7.9% of total California state population. Area of San Diego County is 4,525.7 mi² (=11721.5 km²), in this year population density was 685.98 p/mi². If population growth rate would be same as in period 2010-2014 (+0.07%/yr), San Diego County population in 2024 would be 3,127,739 [0].
Historical population of San Diego County for period 1850-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position
[1850-1860] +18.41 %/yr
[1860-1870] +1.36 %/yr
[1870-1880] +5.7 %/yr
[1880-1890] +15.04 %/yr
[1890-1900] +0.03 %/yr
[1900-1910] +5.8 %/yr
[1910-1920] +6.17 %/yr
[1920-1930] +6.45 %/yr
[1930-1940] +3.27 %/yr
[1940-1950] +6.76 %/yr
[1950-1960] +6.38 %/yr
[1960-1970] +2.77 %/yr
[1970-1980] +3.21 %/yr
[1980-1990] +2.98 %/yr
[1990-2000] +1.2 %/yr
[2000-2005] +0.87 %/yr
[2005-2010] +1.05 %/yr
[2010-2014] +0.07 %/yr
Looking for settlements in San Diego County? Visit this page: Settlements in San Diego County, CA
Population of San Diego County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 109148 | 104631 | 213,779 |
| 5 to 9 | 102212 | 98305 | 200,517 |
| 10 to 14 | 99385 | 95194 | 194,579 |
| 15 to 19 | 111095 | 101224 | 212,319 |
| 20 to 24 | 152042 | 121140 | 273,182 |
| 25 to 29 | 144594 | 131125 | 275,719 |
| 30 to 34 | 129176 | 120515 | 249,691 |
| 35 to 39 | 110201 | 106743 | 216,944 |
| 40 to 44 | 106645 | 106169 | 212,814 |
| 45 to 49 | 104029 | 104349 | 208,378 |
| 50 to 54 | 108569 | 109977 | 218,546 |
| 55 to 59 | 98746 | 103764 | 202,510 |
| 60 to 64 | 81404 | 88218 | 169,622 |
| 65 to 69 | 64623 | 72651 | 137,274 |
| 70 to 74 | 42982 | 51219 | 94,201 |
| 75 to 79 | 30271 | 38877 | 69,148 |
| 80 to 84 | 22518 | 30844 | 53,362 |
| 85+ | 22228 | 38618 | 60,846 |
San Diego County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
| Race | Male | Female | Total |
| WAC | 1319990 | 1292427 | 2,612,417 |
| WA | 1258474 | 1230976 | 2,489,450 |
| NH | 1103225 | 1077178 | 2,180,403 |
| NHWAC | 825036 | 788294 | 1,613,330 |
| NHWA | 779929 | 743622 | 1,523,551 |
| H | 536643 | 546385 | 1,083,028 |
| HWAC | 494954 | 504133 | 999,087 |
| HWA | 478545 | 487354 | 965,899 |
| AAC | 223286 | 247641 | 470,927 |
| NHAAC | 205386 | 229033 | 434,419 |
| AA | 182530 | 207275 | 389,805 |
| NHAA | 172669 | 196970 | 369,639 |
| BAC | 117288 | 105489 | 222,777 |
| NHBAC | 99252 | 86614 | 185,866 |
| BA | 97063 | 84777 | 181,840 |
| NHBA | 84229 | 71342 | 155,571 |
| TOM | 69698 | 69801 | 139,499 |
| NHTOM | 51507 | 51117 | 102,624 |
| IAC | 37446 | 36805 | 74,251 |
| IA | 22189 | 21051 | 43,240 |
| HIAC | 21618 | 21224 | 42,842 |
| HBAC | 18036 | 18875 | 36,911 |
| HTOM | 18191 | 18684 | 36,875 |
| HAAC | 17900 | 18608 | 36,508 |
| NAC | 18259 | 18113 | 36,372 |
| NHIAC | 15828 | 15581 | 31,409 |
| HIA | 14659 | 14087 | 28,746 |
| NHNAC | 13572 | 13412 | 26,984 |
| HBA | 12834 | 13435 | 26,269 |
| HAA | 9861 | 10305 | 20,166 |
| NA | 9914 | 9683 | 19,597 |
| NHNA | 7361 | 7163 | 14,524 |
| NHIA | 7530 | 6964 | 14,494 |
| HNAC | 4687 | 4701 | 9,388 |
| HNA | 2553 | 2520 | 5,073 |
• Los Angeles County population
117.8 mi, 
313°
• Orange County
73.3 mi, 307°
• Riverside County
66.1 mi, 
42°
• San Bernardino County
131.2 mi, 
15°
• Kern County
195.5 mi, 
325°
• Ventura County
163.9 mi, 
304°
• Santa Barbara County
214.6 mi, 299°
• Yuma County
167.1 mi, 
95°
• Imperial County
82.3 mi, 
89°
• La Paz County
165.2 mi, 
72°
[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
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