| Statistic | Reportedincidents | /100k people | Marshfield/100k people | Massachusetts/100k people | National/100k people |
| Total crime | 82 | n/a (estimate) | 313 | 1,427 | 2,119 |
| Murder | 1 | n/a | 3.8 | 1.8 | 5.0 |
| Rape | 6 | n/a | 22.9 | 27.6 | 37.5 |
| Robbery | 0 | n/a | 0.0 | 36.0 | 60.6 |
| Assault | 31 | n/a | 118.1 | 249.3 | 256.1 |
| Violent crime | 38 | n/a (estimate) | 145 | 315 | 359 |
| Burglary | 9 | n/a | 34.3 | 130.3 | 229.2 |
| Theft | 32 | n/a | 122.0 | 876.3 | 1,272.1 |
| Vehicle theft | 3 | n/a | 11.4 | 105.5 | 258.8 |
| Property crime | 44 | n/a (estimate) | 168 | 1,112 | 1,760 |

Crime can be categorized into two primary types: violent and property crimes. Violent crimes encompass offenses such as murder, rape, robbery, and assault, whereas property crimes involve acts like burglary, theft, and vehicle theft. The overall crime rate in Marshfield is 85.3% lower than the national average. Specifically, there were 38 violent crimes reported in Marshfield, equivalent to 145 per 100,000 residents, which is lower than the national average by 59.7%. Additionally, Marshfield recorded 44 property crimes, amounting to 168 per 100,000 people, lower than the national average by 90.5%.
With a crime rate of 313, significantly below the national average of 2119, Marshfield stands out as one of the safest places to reside in the United States. This distinction is primarily attributed to the calculation of total crimes, which encompasses both violent and property crimes per 100,000 residents.
In 1991, property crime rates in the United States soared to over 5,140 crimes per 100,000 people. In the years since, the U.S. property crime rate has continued to decline with the most recent year reporting only 1760 property crimes. In Marshfield, the property crime rate was even less than the national average with a rate of 168, cementing it as one of the safest places to live with regards to property crime.
To get a feel for the safety of living in Marshfield, it's essential to analyze both the overall crime rate and the daily incident count. Marshfield presents a total crime rate that is 85% lower than the national average per 100,000 residents. Consequently, Marshfield experiences an average of 0.22 daily crimes, comprising 0.1 violent incidents and 0.12 property-related offenses. This evaluation offers a comprehensive understanding of the safety landscape, aiding individuals in making informed decisions when considering relocation.
Year-over-year crime data allows residents and potential residents to assess the crime in Marshfield. A decrease in crime rates may indicate improving safety, while an increase could raise concerns. The year-over-year crime rate in Marshfield has decreased by 4.7%. Violent crimes have increased by 46.2%, while property crimes have decreased by 26.7%. By comparing crime rates from one year to the next, authorities and communities can identify trends and patterns in criminal activity. This helps in understanding whether crime is increasing, decreasing, or remaining stable over time.
Marshfield reports an unemployment rate of 2.8%, contrasting with the national average of 4.9%. Constrained employment opportunities or a prevalence of low-paying positions can contribute to elevated rates of unemployment and underemployment. Areas where individuals contend with joblessness or insufficient wages may display heightened susceptibility to an increase in criminal activities attributed to economic insecurity. Conversely, regions characterized by robust employment rates often witness a decrease in overall Marshfield crime rates.
The level of education within a community can impact crime rates. Higher educational attainment often correlates with lower crime rates, as it provides individuals with better job opportunities and alternatives to criminal behavior. While lower educational achievement rates tend to lead to higher crime rates. In Marshfield, 93.5% of people have completed high school, while 83% of people have completed high school nationally.
In areas where housing affordability is an issue, crime can become a significant concern. Some individuals and families may be forced to live in overcrowded or substandard housing conditions, which can increase stress and potentially contribute to domestic disputes and related crimes. The median home price in Marshfield is $815,898, compared to a national average of $326,622.

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| Item | Marshfield | Massachusetts | National |
| Law enforcement employees (officers & civilians) | 44 | 11,659 | 558,732 |
| Police officers & civilians /1000 residents | 1.7 | 2.2 | 3.3 |
| State | Total offenders | Massachusetts /100K | National /100K |
| Massachusetts | 4,551 | 72 | 266 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Scituate, MA | 6,062 | 41 | 117 | 157 |
| Marshfield Hills, MA | 2,484 | 49 | 174 | 224 |
| South Duxbury, MA | 3,467 | 60 | 212 | 272 |
| Bridgewater, MA | 8,837 | 75 | 200 | 275 |
| Hanson, MA | 1,932 | 121 | 204 | 325 |
| Duxbury, MA | 1,774 | 115 | 230 | 345 |
| The Pinehills, MA | 4,646 | 82 | 289 | 371 |
| Marshfield, MA | 5,296 | 145 | 168 | 313 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Grosse Pointe, MI | 5,299 | 111 | 1,969 | 2,081 |
| South Brooksville, FL | 5,292 | 286 | 1,519 | 1,805 |
| Wolfforth, TX | 5,300 | 253 | 443 | 696 |
| Tyrone, PA | 5,291 | 114 | 1,287 | 1,401 |
| Ayden, NC | 5,290 | 254 | 1,483 | 1,736 |
| Marshfield, MA | 5,296 | 145 | 168 | 313 |