Last official estimated population of San Joaquin County was 687,513 (year 2014)[1]. This was 0.216% of total US population and 1.8% of total California state population. Area of San Joaquin County is 1,426.6 mi² (=3694.8 km²), in this year population density was 481.94 p/mi². If population growth rate would be same as in period 2010-2014 (+0.08%/yr), San Joaquin County population in 2022 would be 691,948 [0].
Historical population of San Joaquin 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] +9.97 %/yr
[1860-1870] +8.36 %/yr
[1870-1880] +1.47 %/yr
[1880-1890] +1.63 %/yr
[1890-1900] +2.16 %/yr
[1900-1910] +3.65 %/yr
[1910-1920] +4.65 %/yr
[1920-1930] +2.57 %/yr
[1930-1940] +2.69 %/yr
[1940-1950] +4.11 %/yr
[1950-1960] +2.22 %/yr
[1960-1970] +1.5 %/yr
[1970-1980] +1.81 %/yr
[1980-1990] +3.3 %/yr
[1990-2000] +1.61 %/yr
[2000-2005] +3.11 %/yr
[2005-2010] +0.85 %/yr
[2010-2014] +0.08 %/yr
Looking for settlements in San Joaquin County? Visit this page: Settlements in San Joaquin County, CA
Population of San Joaquin County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 26939 | 25540 | 52,479 |
| 5 to 9 | 29014 | 27515 | 56,529 |
| 10 to 14 | 28603 | 27302 | 55,905 |
| 15 to 19 | 28228 | 26465 | 54,693 |
| 20 to 24 | 27411 | 25716 | 53,127 |
| 25 to 29 | 24821 | 23641 | 48,462 |
| 30 to 34 | 24430 | 23983 | 48,413 |
| 35 to 39 | 22781 | 22924 | 45,705 |
| 40 to 44 | 22531 | 23209 | 45,740 |
| 45 to 49 | 23104 | 22683 | 45,787 |
| 50 to 54 | 23285 | 23468 | 46,753 |
| 55 to 59 | 20990 | 21365 | 42,355 |
| 60 to 64 | 16972 | 18467 | 35,439 |
| 65 to 69 | 13478 | 15219 | 28,697 |
| 70 to 74 | 9212 | 10961 | 20,173 |
| 75 to 79 | 6166 | 7802 | 13,968 |
| 80 to 84 | 4174 | 5877 | 10,051 |
| 85+ | 4070 | 7251 | 11,321 |
San Joaquin 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 | 259443 | 258809 | 518,252 |
| WA | 244038 | 243169 | 487,207 |
| NH | 209026 | 217105 | 426,131 |
| H | 147183 | 142283 | 289,466 |
| NHWAC | 128896 | 133222 | 262,118 |
| HWAC | 130547 | 125587 | 256,134 |
| HWA | 124607 | 119625 | 244,232 |
| NHWA | 119431 | 123544 | 242,975 |
| AAC | 65081 | 68645 | 133,726 |
| NHAAC | 56754 | 60201 | 116,955 |
| AA | 55158 | 58691 | 113,849 |
| NHAA | 49830 | 53242 | 103,072 |
| BAC | 34220 | 34881 | 69,101 |
| BA | 28827 | 29327 | 58,154 |
| NHBAC | 28366 | 28792 | 57,158 |
| NHBA | 24877 | 25179 | 50,056 |
| TOM | 18251 | 18611 | 36,862 |
| IAC | 13197 | 13199 | 26,396 |
| NHTOM | 11347 | 11663 | 23,010 |
| HIAC | 8981 | 8724 | 17,705 |
| HAAC | 8327 | 8444 | 16,771 |
| IA | 7244 | 6993 | 14,237 |
| HTOM | 6904 | 6948 | 13,852 |
| HBAC | 5854 | 6089 | 11,943 |
| HIA | 5622 | 5360 | 10,982 |
| HAA | 5328 | 5449 | 10,777 |
| NAC | 4764 | 4754 | 9,518 |
| NHIAC | 4216 | 4475 | 8,691 |
| HBA | 3950 | 4148 | 8,098 |
| NHNAC | 3276 | 3301 | 6,577 |
| NA | 2691 | 2597 | 5,288 |
| NHNA | 1919 | 1844 | 3,763 |
| NHIA | 1622 | 1633 | 3,255 |
| HNAC | 1488 | 1453 | 2,941 |
| HNA | 772 | 753 | 1,525 |
• Santa Clara County population
54.4 mi, 
204°
• Alameda County
40.2 mi, 
240°
• Sacramento County
35.8 mi, 
354°
• Contra Costa County
37 mi, 
268°
• Stanislaus County
29.7 mi, 
150°
• Solano County
42.9 mi, 
302°
• Merced County
59.3 mi, 149°
• Yolo County
61.8 mi, 
326°
• Calaveras County
42.3 mi, 
66°
• Amador County
48.6 mi, 
43°
[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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