Crime in Chelsea, Massachusetts
Major crime in Chelsea is about the U.S. rate per resident: 1.7 times for persons crimes and 17% lower for property crimes. Expected major crimes are down 23.6% from a year earlier.
Modeled estimates per resident, not counts of incidents. How we calculated this
Index: crimes per resident compared with the U.S., where 100 is the U.S. rate and 200 is twice it.
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Rape / sexual assault stands out most, at 3.2 times the U.S. rate
Expected crimes per year in Chelsea for each type, and the index against the U.S. rate per resident.
Citywide indexWhere the middle half of residents live
Property crimes
Social disorder
How crime varies across Chelsea
The middle half of Chelsea residents live in neighborhoods with a major-crime index between 58 and 117; the typical (median) resident's is 74. The citywide figure (99) is higher than that because crime concentrates in a smaller set of areas.
- 0–5020.0%
- 50–10045.1%
- 100–20031.6%
- 200–4001.9%
- 400+1.5%
Share of residents by the index of their census block group, a neighborhood of roughly 600 to 3,000 people.
Highest on weekday daytimes
Major-crime index by time of week, against the U.S. rate for the same hours.
Major crime fell 23.6% in a year; across Massachusetts it fell 5.7%
Change in expected crimes, with Massachusetts as a whole in gray. The past year uses the reporting agencies' year-to-date FBI data; 2031 is the model's projection.
Chelsea against U.S. places with 25,000 to 50,000 residents
315 of the 960 other places of this size have a higher major-crime index than Chelsea; the middle of the group is 77. The 9 nearest in population:
Major-crime index per resident, U.S. = 100; residents in gray.
Chelsea has a higher major-crime index than 6 of its 8 nearest neighbors
The 8 nearest cities and towns we cover, by major-crime index. The closest, Everett (1 mi), is 15% below Chelsea's rate.
Major-crime index per resident, U.S. = 100; distances between where residents live, in miles.
Questions about crime in Chelsea
What are the most common crimes in Chelsea?
By expected count, the most common persons and property crimes are other larceny (about 211 a year), aggravated assault (about 136 a year) and shoplifting (about 97 a year). Compared with the U.S., rape / sexual assault stands out most: 3.2 times the U.S. rate per resident.
How we calculated this
Each police agency's crimes, as reported to the FBI, are spread across the census block groups it serves using population, jobs, points of interest and, where available, local incident records. Chelsea's figures add up its 37 block groups. The index compares crimes per resident with the U.S. rate.
- Chelsea has no published incident records in our data, so its estimate relies on agency totals and neighborhood characteristics.
- 82.0% of residents live in block groups whose estimate has high confidence (80% interval within about 5x).
- Rates are per resident, so places where many people work or visit but few live, such as downtowns, airports and stadiums, can read high.
- Disorderly conduct and trespassing are modeled, because the FBI records them only through arrests.
- Residents: 40,500. Model updated Oct 20, 2026. Release 2026-2026-10-20-2
Full method and validation·Data sources
CrimeMetric. "Crime in Chelsea, Massachusetts." Vorp Labs, model updated Oct 20, 2026. https://crimemetric.com/ma/chelsea
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Major-crime index, U.S. = 100
- Everett1 mi85
- Revere2 mi69
- Malden3 mi64
- Winthrop Town3 mi38
- Somerville4 mi109
- Medford4 mi65
- Cambridge4 mi185
- Melrose4 mi39