Last official estimated population of Hampden County was 464,160 (year 2014)[1]. This was 0.146% of total US population and 6.8% of total Massachusetts state population. Area of Hampden County is 634.3 mi² (=1642.7 km²), in this year population density was 731.82 p/mi². If population growth rate would be same as in period 2010-2014 (+0.04%/yr), Hampden County population in 2025 would be 466,007 [0].
Historical population of Hampden County for period 1820-2014 [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
[1820-1830] +1.22 %/yr
[1830-1840] +1.68 %/yr
[1840-1850] +3.22 %/yr
[1850-1860] +1.13 %/yr
[1860-1870] +3.17 %/yr
[1870-1880] +2.88 %/yr
[1880-1890] +2.68 %/yr
[1890-1900] +2.61 %/yr
[1900-1910] +2.8 %/yr
[1910-1920] +2.64 %/yr
[1920-1930] +1.11 %/yr
[1930-1940] -0.1 %/yr
[1940-1950] +1.03 %/yr
[1950-1960] +1.55 %/yr
[1960-1970] +0.67 %/yr
[1970-1980] -0.35 %/yr
[1980-1990] +0.3 %/yr
[1990-2000] -0 %/yr
[2000-2005] +0.21 %/yr
[2005-2010] +0.1 %/yr
[2010-2014] +0.04 %/yr
Looking for settlements in Hampden County? Visit this page: Settlements in Hampden County, MA
Population of Hampden County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 14075 | 13424 | 27,499 |
| 5 to 9 | 14584 | 13800 | 28,384 |
| 10 to 14 | 15354 | 14758 | 30,112 |
| 15 to 19 | 17455 | 16732 | 34,187 |
| 20 to 24 | 18278 | 17759 | 36,037 |
| 25 to 29 | 15265 | 15356 | 30,621 |
| 30 to 34 | 13755 | 14820 | 28,575 |
| 35 to 39 | 12283 | 13527 | 25,810 |
| 40 to 44 | 13307 | 14620 | 27,927 |
| 45 to 49 | 14891 | 16244 | 31,135 |
| 50 to 54 | 16520 | 17782 | 34,302 |
| 55 to 59 | 16342 | 17154 | 33,496 |
| 60 to 64 | 13584 | 15047 | 28,631 |
| 65 to 69 | 10675 | 12180 | 22,855 |
| 70 to 74 | 7280 | 8717 | 15,997 |
| 75 to 79 | 4926 | 6446 | 11,372 |
| 80 to 84 | 3520 | 5701 | 9,221 |
| 85+ | 3814 | 8186 | 12,000 |
Hampden 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 | 193981 | 207436 | 401,417 |
| WA | 189080 | 202144 | 391,224 |
| NH | 173745 | 185627 | 359,372 |
| NHWAC | 150178 | 160464 | 310,642 |
| NHWA | 147196 | 157263 | 304,459 |
| H | 52163 | 56626 | 108,789 |
| HWAC | 43803 | 46972 | 90,775 |
| HWA | 41884 | 44881 | 86,765 |
| BAC | 27738 | 30256 | 57,994 |
| BA | 23948 | 26076 | 50,024 |
| NHBAC | 19844 | 21133 | 40,977 |
| NHBA | 17711 | 18798 | 36,509 |
| HBAC | 7894 | 9123 | 17,017 |
| HBA | 6237 | 7278 | 13,515 |
| AAC | 6188 | 6757 | 12,945 |
| NHAAC | 5752 | 6250 | 12,002 |
| TOM | 5475 | 5947 | 11,422 |
| AA | 5272 | 5826 | 11,098 |
| NHAA | 4998 | 5486 | 10,484 |
| IAC | 3502 | 3784 | 7,286 |
| NHTOM | 3373 | 3642 | 7,015 |
| HTOM | 2102 | 2305 | 4,407 |
| HIAC | 2056 | 2245 | 4,301 |
| IA | 1745 | 1838 | 3,583 |
| NHIAC | 1446 | 1539 | 2,985 |
| HIA | 1345 | 1472 | 2,817 |
| NAC | 638 | 677 | 1,315 |
| HAAC | 436 | 507 | 943 |
| HNAC | 412 | 431 | 843 |
| NA | 388 | 422 | 810 |
| NHIA | 400 | 366 | 766 |
| HNA | 321 | 350 | 671 |
| HAA | 274 | 340 | 614 |
| NHNAC | 226 | 246 | 472 |
| NHNA | 67 | 72 | 139 |
• Hartford County population
23.4 mi, 
192°
• Worcester County
37.6 mi, 
71°
• Litchfield County
38.9 mi, 
232°
• Middlesex County
48.9 mi, 
173°
• Hampshire County
14.1 mi, 
354°
• Tolland County
24.5 mi, 
141°
• Berkshire County
33.9 mi, 
299°
• Windham County
39.5 mi, 
122°
• Franklin County
31.1 mi, 
4°
• Columbia County
51.3 mi, 
278°
[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
*Hampshire Massachusetts Notes
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