CrimeMetric

Crime in South Monrovia Island, California

Major crime in South Monrovia Island is 35% below the U.S. rate per resident: 34% lower for persons crimes and 35% lower for property crimes. Expected major crimes are down 5.5% from a year earlier.

Modeled estimates per resident, not counts of incidents. How we calculated this

Major crime
65
35% below the U.S. rate
46% below the California rate
down 5.5% in a year
Persons crimes
66
34% below the U.S. rate
51% below the California rate
down 3.9% in a year
Property crimes
65
35% below the U.S. rate
45% below the California rate
down 5.9% in a year
Social disorder
87
13% below the U.S. rate
14% below the California rate
down 3.2% in a year

Index: crimes per resident compared with the U.S., where 100 is the U.S. rate and 200 is twice it.

Check an address in South Monrovia Island

Crime by type

Theft from vehicle, burglary and weapons violations stand out most, at about 21% above the U.S. rate

Expected crimes per year in South Monrovia Island for each type, and the index against the U.S. rate per resident.

Citywide indexWhere the middle half of residents live

IndexPer year

Neighborhoods in South Monrovia Island

South Monrovia Island is made up of 4 census block groups. The typical resident lives where the major-crime index is 56; the middle half of residents live where it is between 56 and 86.

Map of South Monrovia Island, with its census block groups shaded by major-crime index band
Block groups shaded by major-crime index, in the key's bands below; pale gray where fewer than 100 people live. Highways and boundaries: U.S. Census Bureau.
  • 0–500.0%
  • 50–100100.0%
  • 100–2000.0%
  • 200–4000.0%
  • 400+0.0%

Share of residents by the index of their census block group, a neighborhood of roughly 600 to 3,000 people.

When it happens

Highest on weeknights

Major-crime index by time of week, against the U.S. rate for the same hours.

Monday to Friday, 6am to 6pm56
Sunday to Thursday nights, 6pm to 6am78
Saturday and Sunday, 6am to 6pm57
Friday and Saturday nights, 6pm to 6am69
Trend and outlook

Major crime fell 5.5% in a year; across California it fell 7.4%

Past yearBy 2031
Major crime-5.5%CA -7.4%-16.4%CA -14.1%
Persons crimes-3.9%CA -3.5%-6.5%CA -6.1%
Property crimes-5.9%CA -8.4%-18.6%CA -16.1%
Social disorder-3.2%CA -4.9%-11.4%CA -9.4%

Change in expected crimes, with California as a whole in gray. The past year uses the reporting agencies' year-to-date FBI data; 2031 is the model's projection.

Similar-size places

South Monrovia Island against U.S. places with 5,000 to 10,000 residents

1,049 of the 2,163 other places of this size have a higher major-crime index than South Monrovia Island; the middle of the group is 63. The 9 nearest in population:

Paola, KS6,44070
South Monrovia Island, CA6,43865
Sidney, NE6,43756
Berlin, WI6,44436

Major-crime index per resident, U.S. = 100; residents in gray.

Nearby places

South Monrovia Island has a lower major-crime index than all of its 8 nearest neighbors

The 8 nearest cities and towns we cover, by major-crime index. The closest, Mayflower Village (1 mi), is 1.8 times South Monrovia Island's rate.

El Monte4 mi152
Monrovia2 mi141
Arcadia3 mi141
Duarte2 mi70
South Monrovia Island65

Major-crime index per resident, U.S. = 100; distances between where residents live, in miles.

Questions about crime in South Monrovia Island

What are the most common crimes in South Monrovia Island?

By expected count, the most common persons and property crimes are theft from vehicle (about 21 a year), burglary (about 13 a year) and motor vehicle theft (about 11 a year). Compared with the U.S., theft from vehicle stands out most: 21% above 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. South Monrovia Island's figures add up its 4 block groups. The index compares crimes per resident with the U.S. rate.

  • South Monrovia Island's published incident records inform the estimate for every neighborhood.
  • 0.0% 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: 6,438. Model updated Oct 20, 2026. Release 2026-2026-10-20-2

Full method and validation·Data sources

Cite this page

CrimeMetric. "Crime in South Monrovia Island, California." Vorp Labs, model updated Oct 20, 2026. https://crimemetric.com/ca/south-monrovia-island

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Major-crime index, U.S. = 100