Norfolk County, Massachusetts Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 5th-largest in Massachusetts
The population of Norfolk County, Massachusetts is 724,540 as of the 2023 American Community Survey, making it the 5th-largest county in Massachusetts. The median household income is $126,497, the median home value is $649,400, and the median age is 40.9.
The population of Norfolk County has grown 10.1% since 2010 (673,059 → 740,754), a +0.69% annualized rate.
724,540
Population
+0.69%
Annual growth
1829
People / sq mi
$126,497
Median Income
$649,400
Median Home Value
Norfolk County covers 396 sq mi of land at 1829.2 people per square mile.
About Norfolk County, MA
What sets Norfolk County apart is money: median household income runs $126,497, above the US median of $78,538. Norfolk County is a county in Massachusetts with a population of 724,540. It is the #5-largest of all counties in Massachusetts nationally.
Households here are among the highest-earning of all US counties: median income is $126,497, above the US median of $78,538. Hardship is rare relative to US counties: a poverty rate of just 4.2%, below the national 12.4%. Real estate commands a premium here — a median home value of $649,400, with typical rent around $2,072.
The population is unusually well-credentialed for US counties — 57.6% of adults have a four-year degree, above the national 35.0%. An unusually large 20.6% of workers are remote, above the national 14.0%, and the average commute runs about 33 minutes each way.
Taken together, the income and housing figures place Norfolk County firmly in the higher-cost, higher-earning tier of US counties — a profile that tends to track dense job markets and competitive housing.
Norfolk County Population History (2010-2024)
The county of Norfolk County had a population of 673,059 in 2010 and 740,754 in 2024, a 10.1% growth over 14 years. The peak was 740,754 in 2024. Average annual growth rate: 0.69%.
740,754
Population (2024)
673,059
Population (2010)
740,754
Peak (2024)
0.69%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 673,059 |
| 2011 | 677,823 |
| 2012 | 682,984 |
| 2013 | 688,518 |
| 2014 | 692,439 |
| 2015 | 694,774 |
| 2016 | 697,452 |
| 2017 | 701,046 |
| 2018 | 703,628 |
| 2019 | 707,164 |
| 2020 | 723,750 |
| 2021 | 724,906 |
| 2022 | 728,619 |
| 2023 | 732,379 |
| 2024 | 740,754 |
Race & Ethnicity
| White | 71.4% |
| Black or African American | 7.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.6% |
| Two or More Races | 0.0% |
Age & Sex
40.9
Median Age
51.5%
Female
48.5%
Male
17.3%
Age 65+
Age Distribution
Children (under 15): 16.8% · Seniors (65+): 17.3%
Income & Poverty
| Median household income | $126,497+$25,156 vs state |
| Mean household income | $177,133 |
| Per-capita income | $69,508 |
| Poverty rate | 4.2%-2.4% vs state |
| Unemployment rate | 3.4% |
| Employment-to-population | 65.8% |
Top Industries by Employment
The largest employment sector in Norfolk County is professional & business services, accounting for 29.3% of workers.
How residents commute
9.5%
Drive alone
3.2%
Carpool
59.0%
Public transit
20.6%
Work from home
32.9 min
Avg commute
Housing
$649,400+$123,600 vs state
Median home value
$2,072
Median rent
68.5%
Homeownership rate
293,420
Total housing units
95.9%
Occupied
4.1%
Vacant
31.5%
Renter-occupied
Social & access
98.1%
With health insurance
96.5%
With broadband internet
20.4%
Foreign-born
4.0%
Veterans (18+)
9.7%
With a disability
77.0%
Speak language other than English at home
Education
94.4%
High School+
57.6%
Bachelor's+
Largest cities in Massachusetts
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County rankings
Common questions about Norfolk County, MA
Frequently Asked Questions
Norfolk County, Massachusetts has a population of 724,540 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 5th-largest county in Massachusetts. Population density is 1829 people per square mile.
The population of Norfolk County has grown 10.1% since 2010 (673,059 → 740,754), a +0.69% annualized rate.
The median household income in Norfolk County, Massachusetts is $126,497, with mean (average) household income of $177,133 and per-capita income of $69,508. 4.2% of residents live below the federal poverty level.
In Norfolk County, the largest racial and ethnic groups are White (71.4%), Black or African American (7.2%), Hispanic or Latino (0.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Norfolk County, Massachusetts is 40.9 years. Residents are 51.5% female and 48.5% male.
The median home value in Norfolk County is $649,400 and median monthly rent is $2,072. 68.5% of occupied housing units are owner-occupied. The county has 293,420 total housing units, 4.1% of which are vacant.
The largest employment sector in Norfolk County, Massachusetts is professional, scientific, and management services, employing 29.3% of workers. The unemployment rate is 3.4%.
Boston is among the largest cities associated with Norfolk County, Massachusetts, with a population of 663,972.
Norfolk County, MA Climate
Norfolk County, MA has an average annual temperature of 9.6°C (49°F) and receives about 1174 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
9.6°C
Avg Temp
1174
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -3° / 26° | 103 mm |
| February | -2° / 28° | 90 mm |
| March | 2° / 36° | 106 mm |
| April | 8° / 46° | 99 mm |
| May | 14° / 57° | 90 mm |
| June | 19° / 66° | 89 mm |
| July | 22° / 72° | 88 mm |
| August | 22° / 71° | 99 mm |
| September | 17° / 63° | 93 mm |
| October | 11° / 52° | 99 mm |
| November | 6° / 43° | 112 mm |
| December | 0° / 32° | 106 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Norfolk County, MA
The most comfortable months to visit Norfolk County, MA are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 28°C high). The coldest is January (near -8°C low). November is usually the wettest month.
Where to stay near Norfolk County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.