Last official estimated population of Marin County was 252,884 (year 2014)[1]. This was 0.079% of total US population and 0.6% of total California state population. Area of Marin County is 828.2 mi² (=2145 km²), in this year population density was 305.34 p/mi². If population growth rate would be same as in period 2010-2014 (+0.05%/yr), Marin County population in 2024 would be 254,075 [0].
Historical population of Marin 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] +26.29 %/yr
[1860-1870] +7.55 %/yr
[1870-1880] +5.07 %/yr
[1880-1890] +1.45 %/yr
[1890-1900] +1.85 %/yr
[1900-1910] +4.81 %/yr
[1910-1920] +0.85 %/yr
[1920-1930] +4.3 %/yr
[1930-1940] +2.42 %/yr
[1940-1950] +4.93 %/yr
[1950-1960] +5.54 %/yr
[1960-1970] +3.45 %/yr
[1970-1980] +0.77 %/yr
[1980-1990] +0.33 %/yr
[1990-2000] +0.72 %/yr
[2000-2005] -0.25 %/yr
[2005-2010] +0.66 %/yr
[2010-2014] +0.05 %/yr
Looking for settlements in Marin County? Visit this page: Settlements in Marin County, CA
Population of Marin County by age groups male (M) and female (F)[1b]
Age Gr. | (M) | (F) | Total |
0 to 4 | 6396 | 6171 | 12,567 |
5 to 9 | 8046 | 7801 | 15,847 |
10 to 14 | 8161 | 7989 | 16,150 |
15 to 19 | 6965 | 6898 | 13,863 |
20 to 24 | 6195 | 5424 | 11,619 |
25 to 29 | 5930 | 4971 | 10,901 |
30 to 34 | 6536 | 6199 | 12,735 |
35 to 39 | 7244 | 7513 | 14,757 |
40 to 44 | 9603 | 9624 | 19,227 |
45 to 49 | 10410 | 10499 | 20,909 |
50 to 54 | 10333 | 10759 | 21,092 |
55 to 59 | 9666 | 10792 | 20,458 |
60 to 64 | 9386 | 10651 | 20,037 |
65 to 69 | 8011 | 9287 | 17,298 |
70 to 74 | 5699 | 6502 | 12,201 |
75 to 79 | 3638 | 4239 | 7,877 |
80 to 84 | 2433 | 3265 | 5,698 |
85+ | 2594 | 4920 | 7,514 |
Marin 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 | 113677 | 119437 | 233,114 |
WA | 109412 | 114718 | 224,130 |
NH | 105430 | 113693 | 219,123 |
NHWAC | 94055 | 101417 | 195,472 |
NHWA | 90701 | 97523 | 188,224 |
H | 21816 | 19811 | 41,627 |
HWAC | 19622 | 18020 | 37,642 |
HWA | 18711 | 17195 | 35,906 |
AAC | 9294 | 12251 | 21,545 |
NHAAC | 8630 | 11642 | 20,272 |
AA | 6590 | 9320 | 15,910 |
NHAA | 6332 | 9077 | 15,409 |
BAC | 5779 | 4030 | 9,809 |
TOM | 4629 | 5095 | 9,724 |
NHBAC | 5118 | 3419 | 8,537 |
NHTOM | 3590 | 4175 | 7,765 |
BA | 4700 | 2839 | 7,539 |
NHBA | 4286 | 2437 | 6,723 |
IAC | 2779 | 2474 | 5,253 |
HIAC | 1762 | 1351 | 3,113 |
IA | 1618 | 1160 | 2,778 |
HIA | 1286 | 951 | 2,237 |
NHIAC | 1017 | 1123 | 2,140 |
HTOM | 1039 | 920 | 1,959 |
NAC | 624 | 745 | 1,369 |
HAAC | 664 | 609 | 1,273 |
HBAC | 661 | 611 | 1,272 |
NHNAC | 432 | 577 | 1,009 |
HBA | 414 | 402 | 816 |
NA | 297 | 372 | 669 |
NHIA | 332 | 209 | 541 |
HAA | 258 | 243 | 501 |
NHNA | 189 | 272 | 461 |
HNAC | 192 | 168 | 360 |
HNA | 108 | 100 | 208 |
• Alameda County population
53.3 mi, 121°
• Contra Costa County
44.2 mi, 101°
• San Francisco County
27.3 mi, 214°
• San Mateo County
48.5 mi, 155°
• San Joaquin County
80.6 mi, 95°
• Sonoma County
34.1 mi, 343°
• Solano County
46.3 mi, 71°
• Yolo County
63 mi, 46°
• Napa County
38.8 mi, 35°
• Lake County
72.1 mi, 359°
[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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