Last official estimated population of Norfolk County was 672,645 (year 2014)[1]. This was 0.211% of total US population and 9.9% of total Massachusetts state population. Area of Norfolk County is 444.3 mi² (=1150.9 km²), in this year population density was 1,513.78 p/mi². If population growth rate would be same as in period 2010-2014 (+0.07%/yr), Norfolk County population in 2026 would be 678,059 [0].
Historical population of Norfolk County for period 1800-2014 [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

[1800-1810] +1.39 %/yr
[1810-1820] +1.56 %/yr
[1820-1830] +1.41 %/yr
[1830-1840] +2.39 %/yr
[1840-1850] +4.03 %/yr
[1850-1860] +3.38 %/yr
[1860-1870] -2.04 %/yr
[1870-1880] +0.76 %/yr
[1880-1890] +2.11 %/yr
[1890-1900] +2.45 %/yr
[1900-1910] +2.15 %/yr
[1910-1920] +1.57 %/yr
[1920-1930] +3.17 %/yr
[1930-1940] +0.83 %/yr
[1940-1950] +1.89 %/yr
[1950-1960] +2.66 %/yr
[1960-1970] +1.72 %/yr
[1970-1980] +0.03 %/yr
[1980-1990] +0.16 %/yr
[1990-2000] +0.54 %/yr
[2000-2005] +0.04 %/yr
[2005-2010] +0.59 %/yr
[2010-2014] +0.07 %/yr
Looking for settlements in Norfolk County? Visit this page: Settlements in Norfolk County, MA
Population of Norfolk County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 19064 | 18370 | 37,434 |
| 5 to 9 | 20526 | 20057 | 40,583 |
| 10 to 14 | 22800 | 21586 | 44,386 |
| 15 to 19 | 22619 | 22456 | 45,075 |
| 20 to 24 | 20499 | 21641 | 42,140 |
| 25 to 29 | 20851 | 22512 | 43,363 |
| 30 to 34 | 20841 | 22007 | 42,848 |
| 35 to 39 | 20346 | 21655 | 42,001 |
| 40 to 44 | 22317 | 23871 | 46,188 |
| 45 to 49 | 25014 | 26438 | 51,452 |
| 50 to 54 | 26791 | 28505 | 55,296 |
| 55 to 59 | 24513 | 26480 | 50,993 |
| 60 to 64 | 20016 | 21953 | 41,969 |
| 65 to 69 | 15926 | 18012 | 33,938 |
| 70 to 74 | 10597 | 13189 | 23,786 |
| 75 to 79 | 7551 | 10115 | 17,666 |
| 80 to 84 | 5781 | 9016 | 14,797 |
| 85+ | 5870 | 12469 | 18,339 |
Norfolk 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 |
| NH | 318445 | 346143 | 664,588 |
| WAC | 274674 | 296608 | 571,282 |
| WA | 269281 | 290865 | 560,146 |
| NHWAC | 263528 | 285078 | 548,606 |
| NHWA | 258681 | 279903 | 538,584 |
| AAC | 36043 | 40766 | 76,809 |
| NHAAC | 35721 | 40372 | 76,093 |
| AA | 33000 | 37543 | 70,543 |
| NHAA | 32807 | 37286 | 70,093 |
| BAC | 25290 | 27289 | 52,579 |
| NHBAC | 23132 | 24875 | 48,007 |
| BA | 22826 | 24616 | 47,442 |
| NHBA | 21064 | 22632 | 43,696 |
| H | 13477 | 14189 | 27,666 |
| HWAC | 11146 | 11530 | 22,676 |
| HWA | 10600 | 10962 | 21,562 |
| TOM | 5978 | 6393 | 12,371 |
| NHTOM | 5352 | 5746 | 11,098 |
| HBAC | 2158 | 2414 | 4,572 |
| HBA | 1762 | 1984 | 3,746 |
| IAC | 1791 | 1947 | 3,738 |
| NHIAC | 1379 | 1499 | 2,878 |
| IA | 677 | 733 | 1,410 |
| HTOM | 626 | 647 | 1,273 |
| NAC | 441 | 472 | 913 |
| NHIA | 430 | 454 | 884 |
| HIAC | 412 | 448 | 860 |
| NHNAC | 339 | 385 | 724 |
| HAAC | 322 | 394 | 716 |
| HIA | 247 | 279 | 526 |
| HAA | 193 | 257 | 450 |
| NA | 160 | 182 | 342 |
| NHNA | 111 | 122 | 233 |
| HNAC | 102 | 87 | 189 |
| HNA | 49 | 60 | 109 |
• Middlesex County population
24 mi,
332°
• Worcester County
40 mi,
283°
• Essex County
36.3 mi,
26°
• Suffolk County
13.8 mi,
36°
• Providence County
29.2 mi,
224°
• Bristol County
29.7 mi,
170°
• Plymouth County
25.9 mi,
119°
• Kent County
40.3 mi,
210°
• Newport County
46.5 mi,
186°
• Bristol County
33 mi,
189°
[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
*Suffolk Massachusetts Notes
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