Last official estimated population of Imperial County was 174,779 (year 2014)[1]. This was 0.055% of total US population and 0.4% of total California state population. Area of Imperial County is 4,481.7 mi² (=11607.6 km²), in this year population density was 39.00 p/mi². If population growth rate would be same as in period 2010-2014 (+0.04%/yr), Imperial County population in 2025 would be 175,471 [0].
Historical population of Imperial County for period 1910-2014 [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

[1910-1920] +12.33 %/yr
[1920-1930] +3.43 %/yr
[1930-1940] -0.19 %/yr
[1940-1950] +0.53 %/yr
[1950-1960] +1.36 %/yr
[1960-1970] +0.33 %/yr
[1970-1980] +2.15 %/yr
[1980-1990] +1.73 %/yr
[1990-2000] +2.68 %/yr
[2000-2005] +1.87 %/yr
[2005-2010] +2.26 %/yr
[2010-2014] +0.04 %/yr
Looking for settlements in Imperial County? Visit this page: Settlements in Imperial County, CA
Population of Imperial County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 7644 | 7285 | 14,929 |
| 5 to 9 | 7057 | 6900 | 13,957 |
| 10 to 14 | 6986 | 6783 | 13,769 |
| 15 to 19 | 7221 | 6516 | 13,737 |
| 20 to 24 | 7865 | 6575 | 14,440 |
| 25 to 29 | 7337 | 5707 | 13,044 |
| 30 to 34 | 6767 | 5489 | 12,256 |
| 35 to 39 | 5908 | 5014 | 10,922 |
| 40 to 44 | 5469 | 5212 | 10,681 |
| 45 to 49 | 5455 | 5320 | 10,775 |
| 50 to 54 | 5287 | 5444 | 10,731 |
| 55 to 59 | 4834 | 5242 | 10,076 |
| 60 to 64 | 3927 | 4324 | 8,251 |
| 65 to 69 | 3213 | 3515 | 6,728 |
| 70 to 74 | 2185 | 2782 | 4,967 |
| 75 to 79 | 1783 | 2189 | 3,972 |
| 80 to 84 | 1304 | 1652 | 2,956 |
| 85+ | 1187 | 1713 | 2,900 |
Imperial 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 | 82277 | 81026 | 163,303 |
| WA | 80903 | 79672 | 160,575 |
| H | 73316 | 74033 | 147,349 |
| HWAC | 69870 | 70407 | 140,277 |
| HWA | 68946 | 69517 | 138,463 |
| NH | 18113 | 13629 | 31,742 |
| NHWAC | 12407 | 10619 | 23,026 |
| NHWA | 11957 | 10155 | 22,112 |
| BAC | 4820 | 2124 | 6,944 |
| BA | 4423 | 1758 | 6,181 |
| IAC | 3021 | 3126 | 6,147 |
| AAC | 2636 | 2673 | 5,309 |
| NHBAC | 3804 | 1048 | 4,852 |
| IA | 2274 | 2391 | 4,665 |
| NHBA | 3649 | 897 | 4,546 |
| HIAC | 2170 | 2126 | 4,296 |
| AA | 2080 | 2119 | 4,199 |
| HIA | 1580 | 1567 | 3,147 |
| TOM | 1567 | 1536 | 3,103 |
| NHAAC | 1471 | 1425 | 2,896 |
| HAAC | 1165 | 1248 | 2,413 |
| NHAA | 1230 | 1166 | 2,396 |
| HBAC | 1016 | 1076 | 2,092 |
| HTOM | 1047 | 994 | 2,041 |
| NHIAC | 851 | 1000 | 1,851 |
| HAA | 850 | 953 | 1,803 |
| HBA | 774 | 861 | 1,635 |
| NHIA | 694 | 824 | 1,518 |
| NHTOM | 520 | 542 | 1,062 |
| NAC | 319 | 328 | 647 |
| HNAC | 201 | 237 | 438 |
| NA | 182 | 186 | 368 |
| HNA | 119 | 141 | 260 |
| NHNAC | 118 | 91 | 209 |
| NHNA | 63 | 45 | 108 |
• Los Angeles County population
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295°
• Maricopa County
166.7 mi,
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• San Diego County
82.3 mi,
269°
• Orange County
146.5 mi,
287°
• Riverside County
60.5 mi,
321°
• San Bernardino County
134.1 mi,
339°
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• Mohave County
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• Yuma County
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• La Paz County
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[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
*San Diego California Notes
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