Last official estimated population of Modoc County was 9,708 (year 2014)[1]. This was 0.003% of total US population and 0% of total California state population. Area of Modoc County is 4,203.4 mi² (=10886.8 km²), in this year population density was 2.31 p/mi². If population growth rate would be same as in period 2010-2014 (+0.06%/yr), Modoc County population in 2026 would be 9,774 [0].
Historical population of Modoc County for period 1880-2014 [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
[1880-1890] +1.26 %/yr
[1890-1900] +0.18 %/yr
[1900-1910] +2.01 %/yr
[1910-1920] -1.31 %/yr
[1920-1930] +4.01 %/yr
[1930-1940] +0.81 %/yr
[1940-1950] +1.06 %/yr
[1950-1960] -1.51 %/yr
[1960-1970] -1.06 %/yr
[1970-1980] +1.43 %/yr
[1980-1990] +1.18 %/yr
[1990-2000] -0.26 %/yr
[2000-2005] +0.28 %/yr
[2005-2010] +0.25 %/yr
[2010-2014] +0.06 %/yr
Looking for settlements in Modoc County? Visit this page: Settlements in Modoc County, CA
Population of Modoc County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 218 | 208 | 426 |
| 5 to 9 | 262 | 247 | 509 |
| 10 to 14 | 308 | 251 | 559 |
| 15 to 19 | 265 | 255 | 520 |
| 20 to 24 | 232 | 187 | 419 |
| 25 to 29 | 210 | 211 | 421 |
| 30 to 34 | 245 | 220 | 465 |
| 35 to 39 | 221 | 230 | 451 |
| 40 to 44 | 272 | 226 | 498 |
| 45 to 49 | 248 | 264 | 512 |
| 50 to 54 | 342 | 344 | 686 |
| 55 to 59 | 331 | 382 | 713 |
| 60 to 64 | 360 | 395 | 755 |
| 65 to 69 | 376 | 359 | 735 |
| 70 to 74 | 286 | 260 | 546 |
| 75 to 79 | 170 | 170 | 340 |
| 80 to 84 | 110 | 135 | 245 |
| 85+ | 97 | 126 | 223 |
Modoc 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 | 4177 | 4122 | 8,299 |
| WA | 4043 | 3981 | 8,024 |
| NH | 3854 | 3838 | 7,692 |
| NHWAC | 3594 | 3603 | 7,197 |
| NHWA | 3510 | 3496 | 7,006 |
| H | 699 | 632 | 1,331 |
| HWAC | 583 | 519 | 1,102 |
| HWA | 533 | 485 | 1,018 |
| IAC | 297 | 337 | 634 |
| IA | 215 | 248 | 463 |
| NHIAC | 167 | 217 | 384 |
| TOM | 141 | 150 | 291 |
| NHIA | 116 | 148 | 264 |
| HIAC | 130 | 120 | 250 |
| NHTOM | 90 | 116 | 206 |
| HIA | 99 | 100 | 199 |
| BAC | 126 | 68 | 194 |
| NHBAC | 104 | 50 | 154 |
| AAC | 67 | 76 | 143 |
| NHAAC | 59 | 67 | 126 |
| AA | 50 | 58 | 108 |
| BA | 85 | 22 | 107 |
| NHBA | 80 | 16 | 96 |
| NHAA | 45 | 51 | 96 |
| HTOM | 51 | 34 | 85 |
| NAC | 28 | 17 | 45 |
| HBAC | 22 | 18 | 40 |
| NHNAC | 21 | 17 | 38 |
| NA | 19 | 11 | 30 |
| NHNA | 13 | 11 | 24 |
| HAAC | 8 | 9 | 17 |
| HAA | 5 | 7 | 12 |
| HBA | 5 | 6 | 11 |
| HNAC | 7 | 0 | 7 |
| HNA | 6 | 0 | 6 |
• Washoe County population
80.9 mi, 
137°
• Jackson County
115.3 mi, 
299°
• Shasta County
89.8 mi, 
230°
• Klamath County
89.1 mi, 
327°
• Tehama County
128.6 mi, 
217°
• Siskiyou County
93.8 mi, 
269°
• Lassen County
60.4 mi, 
175°
• Plumas County
110.7 mi, 182°
• Lake County
84.3 mi, 
11°
• Harney County
134.7 mi, 
41°
[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
*Siskiyou California Notes
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